/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-ap_file-46.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 15:01:54,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 15:01:54,472 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 15:01:54,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 15:01:54,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 15:01:54,490 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 15:01:54,491 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 15:01:54,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 15:01:54,491 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 15:01:54,491 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 15:01:54,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 15:01:54,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 15:01:54,492 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 15:01:54,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 15:01:54,493 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 15:01:54,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 15:01:54,493 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 15:01:54,494 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 15:01:54,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 15:01:54,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 15:01:54,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 15:01:54,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 15:01:54,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 15:01:54,495 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 15:01:54,496 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 15:01:54,496 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 15:01:54,496 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 15:01:54,496 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 15:01:54,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 15:01:54,497 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 15:01:54,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 15:01:54,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 15:01:54,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 15:01:54,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 15:01:54,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:01:54,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 15:01:54,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 15:01:54,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 15:01:54,499 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 15:01:54,499 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 15:01:54,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 15:01:54,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 15:01:54,500 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 15:01:54,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 15:01:54,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 15:01:54,500 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 15:01:54,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 15:01:54,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 15:01:54,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 15:01:54,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 15:01:54,733 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 15:01:54,734 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 15:01:54,735 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-46.i [2023-12-24 15:01:55,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 15:01:55,978 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 15:01:55,979 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-46.i [2023-12-24 15:01:55,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0f78864/eed61f17b9604bb6826deb773e63ecd2/FLAG04015dac1 [2023-12-24 15:01:56,000 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0f78864/eed61f17b9604bb6826deb773e63ecd2 [2023-12-24 15:01:56,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 15:01:56,003 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 15:01:56,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 15:01:56,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 15:01:56,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 15:01:56,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e3b0e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56, skipping insertion in model container [2023-12-24 15:01:56,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,037 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 15:01:56,133 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-ap_file-46.i[917,930] [2023-12-24 15:01:56,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:01:56,185 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 15:01:56,193 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-ap_file-46.i[917,930] [2023-12-24 15:01:56,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:01:56,238 INFO L206 MainTranslator]: Completed translation [2023-12-24 15:01:56,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56 WrapperNode [2023-12-24 15:01:56,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 15:01:56,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 15:01:56,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 15:01:56,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 15:01:56,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,279 INFO L138 Inliner]: procedures = 33, calls = 130, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 392 [2023-12-24 15:01:56,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 15:01:56,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 15:01:56,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 15:01:56,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 15:01:56,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,293 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,308 INFO L175 MemorySlicer]: Split 101 memory accesses to 5 slices as follows [2, 37, 8, 40, 14]. 40 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 3, 2]. The 16 writes are split as follows [0, 9, 1, 3, 3]. [2023-12-24 15:01:56,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,329 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 15:01:56,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 15:01:56,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 15:01:56,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 15:01:56,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (1/1) ... [2023-12-24 15:01:56,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:01:56,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 15:01:56,363 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 15:01:56,371 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 15:01:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 15:01:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 15:01:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 15:01:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 15:01:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 15:01:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 15:01:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 15:01:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 15:01:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 15:01:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 15:01:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 15:01:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 15:01:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 15:01:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 15:01:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 15:01:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 15:01:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 15:01:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 15:01:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 15:01:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 15:01:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 15:01:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 15:01:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 15:01:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 15:01:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 15:01:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 15:01:56,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 15:01:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 15:01:56,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 15:01:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 15:01:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 15:01:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 15:01:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 15:01:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 15:01:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 15:01:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 15:01:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 15:01:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 15:01:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 15:01:56,501 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 15:01:56,503 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 15:01:56,995 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 15:01:57,040 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 15:01:57,041 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 15:01:57,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:01:57 BoogieIcfgContainer [2023-12-24 15:01:57,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 15:01:57,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 15:01:57,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 15:01:57,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 15:01:57,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 03:01:56" (1/3) ... [2023-12-24 15:01:57,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297485b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:01:57, skipping insertion in model container [2023-12-24 15:01:57,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:01:56" (2/3) ... [2023-12-24 15:01:57,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297485b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:01:57, skipping insertion in model container [2023-12-24 15:01:57,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:01:57" (3/3) ... [2023-12-24 15:01:57,048 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-46.i [2023-12-24 15:01:57,061 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 15:01:57,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 15:01:57,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 15:01:57,099 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;@7a40f246, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 15:01:57,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 15:01:57,102 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 15:01:57,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 15:01:57,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:01:57,113 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 15:01:57,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:01:57,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:01:57,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1536828451, now seen corresponding path program 1 times [2023-12-24 15:01:57,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:01:57,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944960612] [2023-12-24 15:01:57,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:01:57,132 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 15:01:57,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:01:57,134 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 15:01:57,142 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 15:01:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:01:57,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 15:01:57,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:01:57,440 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 15:01:57,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:01:57,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:01:57,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944960612] [2023-12-24 15:01:57,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944960612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:01:57,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:01:57,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 15:01:57,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476950887] [2023-12-24 15:01:57,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:01:57,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 15:01:57,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:01:57,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 15:01:57,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 15:01:57,468 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 15:01:57,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:01:57,507 INFO L93 Difference]: Finished difference Result 169 states and 268 transitions. [2023-12-24 15:01:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 15:01:57,510 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 15:01:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:01:57,524 INFO L225 Difference]: With dead ends: 169 [2023-12-24 15:01:57,525 INFO L226 Difference]: Without dead ends: 84 [2023-12-24 15:01:57,528 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 15:01:57,532 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 15:01:57,533 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 15:01:57,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-24 15:01:57,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-24 15:01:57,559 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 15:01:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 123 transitions. [2023-12-24 15:01:57,562 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 123 transitions. Word has length 109 [2023-12-24 15:01:57,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:01:57,562 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 123 transitions. [2023-12-24 15:01:57,562 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 15:01:57,562 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 123 transitions. [2023-12-24 15:01:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 15:01:57,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:01:57,565 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 15:01:57,572 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 15:01:57,769 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 15:01:57,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:01:57,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:01:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -374739297, now seen corresponding path program 1 times [2023-12-24 15:01:57,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:01:57,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288651759] [2023-12-24 15:01:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:01:57,772 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 15:01:57,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:01:57,773 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 15:01:57,775 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 15:01:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:01:57,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 15:01:58,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:01:58,101 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 9 [2023-12-24 15:01:59,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:02:00,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 15:02:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 15:02:01,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:02:02,751 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:02:02,751 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 23 treesize of output 26 [2023-12-24 15:02:03,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:03,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288651759] [2023-12-24 15:02:03,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288651759] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:02:03,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1134152686] [2023-12-24 15:02:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:03,174 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:02:03,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:02:03,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:02:03,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-24 15:02:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:03,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 15:02:03,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:04,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2023-12-24 15:02:05,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2023-12-24 15:02:07,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 15:02:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 99 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 15:02:07,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:02:08,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1134152686] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:02:08,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:02:08,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 24 [2023-12-24 15:02:08,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72902216] [2023-12-24 15:02:08,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:02:08,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 15:02:08,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:08,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 15:02:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 15:02:08,373 INFO L87 Difference]: Start difference. First operand 84 states and 123 transitions. Second operand has 25 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 20 states have internal predecessors, (80), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) [2023-12-24 15:02:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:32,312 INFO L93 Difference]: Finished difference Result 444 states and 637 transitions. [2023-12-24 15:02:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 15:02:32,312 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 20 states have internal predecessors, (80), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) Word has length 109 [2023-12-24 15:02:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:32,315 INFO L225 Difference]: With dead ends: 444 [2023-12-24 15:02:32,315 INFO L226 Difference]: Without dead ends: 361 [2023-12-24 15:02:32,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 245 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=852, Invalid=3180, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 15:02:32,318 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 1500 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:02:32,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1276 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-12-24 15:02:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-24 15:02:32,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 199. [2023-12-24 15:02:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 157 states have (on average 1.3503184713375795) internal successors, (212), 158 states have internal predecessors, (212), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 15:02:32,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 282 transitions. [2023-12-24 15:02:32,341 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 282 transitions. Word has length 109 [2023-12-24 15:02:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:32,341 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 282 transitions. [2023-12-24 15:02:32,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 20 states have internal predecessors, (80), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) [2023-12-24 15:02:32,341 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 282 transitions. [2023-12-24 15:02:32,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 15:02:32,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:32,343 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 15:02:32,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-24 15:02:32,561 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 15:02:32,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 15:02:32,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:32,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash -116573859, now seen corresponding path program 1 times [2023-12-24 15:02:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:32,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237717345] [2023-12-24 15:02:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:32,754 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 15:02:32,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:32,755 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 15:02:32,756 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 15:02:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:32,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 15:02:32,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:32,929 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 15:02:32,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 15:02:32,960 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 15:02:32,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:02:32,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:32,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237717345] [2023-12-24 15:02:32,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237717345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:02:32,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:02:32,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:02:32,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351460244] [2023-12-24 15:02:32,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:02:32,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:02:32,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:32,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:02:32,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:02:32,962 INFO L87 Difference]: Start difference. First operand 199 states and 282 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 15:02:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:33,123 INFO L93 Difference]: Finished difference Result 416 states and 597 transitions. [2023-12-24 15:02:33,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 15:02:33,123 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 15:02:33,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:33,126 INFO L225 Difference]: With dead ends: 416 [2023-12-24 15:02:33,126 INFO L226 Difference]: Without dead ends: 297 [2023-12-24 15:02:33,127 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 15:02:33,127 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 89 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:02:33,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 477 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:02:33,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-24 15:02:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 215. [2023-12-24 15:02:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 173 states have (on average 1.346820809248555) internal successors, (233), 174 states have internal predecessors, (233), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 15:02:33,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 303 transitions. [2023-12-24 15:02:33,148 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 303 transitions. Word has length 109 [2023-12-24 15:02:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:33,149 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 303 transitions. [2023-12-24 15:02:33,149 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 15:02:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 303 transitions. [2023-12-24 15:02:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 15:02:33,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:33,150 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] [2023-12-24 15:02:33,159 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 (5)] Ended with exit code 0 [2023-12-24 15:02:33,356 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 15:02:33,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:33,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:33,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1242710302, now seen corresponding path program 1 times [2023-12-24 15:02:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:33,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444663101] [2023-12-24 15:02:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:33,358 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 15:02:33,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:33,359 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 15:02:33,360 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 15:02:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:33,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 15:02:33,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:33,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 15:02:33,658 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 15:02:33,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:02:33,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:33,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444663101] [2023-12-24 15:02:33,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444663101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:02:33,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:02:33,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 15:02:33,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007940060] [2023-12-24 15:02:33,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:02:33,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 15:02:33,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:33,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 15:02:33,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 15:02:33,660 INFO L87 Difference]: Start difference. First operand 215 states and 303 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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 15:02:33,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:33,890 INFO L93 Difference]: Finished difference Result 503 states and 719 transitions. [2023-12-24 15:02:33,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 15:02:33,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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 110 [2023-12-24 15:02:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:33,892 INFO L225 Difference]: With dead ends: 503 [2023-12-24 15:02:33,893 INFO L226 Difference]: Without dead ends: 384 [2023-12-24 15:02:33,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 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 15:02:33,894 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 181 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:02:33,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 324 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:02:33,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-24 15:02:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 374. [2023-12-24 15:02:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 309 states have (on average 1.3656957928802589) internal successors, (422), 311 states have internal predecessors, (422), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:02:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 534 transitions. [2023-12-24 15:02:33,931 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 534 transitions. Word has length 110 [2023-12-24 15:02:33,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:33,932 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 534 transitions. [2023-12-24 15:02:33,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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 15:02:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 534 transitions. [2023-12-24 15:02:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 15:02:33,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:33,933 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] [2023-12-24 15:02:33,948 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 15:02:34,134 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 15:02:34,134 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:34,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:34,135 INFO L85 PathProgramCache]: Analyzing trace with hash -425061852, now seen corresponding path program 1 times [2023-12-24 15:02:34,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:34,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069177478] [2023-12-24 15:02:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:34,135 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 15:02:34,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:34,136 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 15:02:34,152 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 15:02:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:34,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 15:02:34,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:35,180 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 15:02:35,244 INFO L349 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2023-12-24 15:02:35,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2023-12-24 15:02:35,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:02:35,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 30 [2023-12-24 15:02:35,318 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 15:02:35,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:02:35,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:35,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069177478] [2023-12-24 15:02:35,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069177478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:02:35,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:02:35,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:02:35,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702465213] [2023-12-24 15:02:35,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:02:35,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:02:35,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:35,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:02:35,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:02:35,320 INFO L87 Difference]: Start difference. First operand 374 states and 534 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 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 15:02:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:35,861 INFO L93 Difference]: Finished difference Result 622 states and 894 transitions. [2023-12-24 15:02:35,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 15:02:35,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 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 110 [2023-12-24 15:02:35,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:35,864 INFO L225 Difference]: With dead ends: 622 [2023-12-24 15:02:35,864 INFO L226 Difference]: Without dead ends: 523 [2023-12-24 15:02:35,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2023-12-24 15:02:35,865 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 223 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:02:35,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 607 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 15:02:35,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-24 15:02:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 378. [2023-12-24 15:02:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 313 states have (on average 1.3642172523961662) internal successors, (427), 315 states have internal predecessors, (427), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:02:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 539 transitions. [2023-12-24 15:02:35,897 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 539 transitions. Word has length 110 [2023-12-24 15:02:35,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:35,897 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 539 transitions. [2023-12-24 15:02:35,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 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 15:02:35,897 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 539 transitions. [2023-12-24 15:02:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 15:02:35,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:35,899 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 15:02:35,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 15:02:36,105 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 15:02:36,106 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:36,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1889027886, now seen corresponding path program 1 times [2023-12-24 15:02:36,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35723014] [2023-12-24 15:02:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:36,107 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 15:02:36,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:36,108 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 15:02:36,109 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 15:02:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:36,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:02:36,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:36,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:02:36,333 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 15:02:36,361 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 15:02:36,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:02:36,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:36,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35723014] [2023-12-24 15:02:36,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35723014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:02:36,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:02:36,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:02:36,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100831579] [2023-12-24 15:02:36,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:02:36,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:02:36,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:36,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:02:36,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:02:36,362 INFO L87 Difference]: Start difference. First operand 378 states and 539 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 15:02:40,515 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 15:02:40,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:40,742 INFO L93 Difference]: Finished difference Result 839 states and 1196 transitions. [2023-12-24 15:02:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:02:40,743 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 15:02:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:40,746 INFO L225 Difference]: With dead ends: 839 [2023-12-24 15:02:40,746 INFO L226 Difference]: Without dead ends: 554 [2023-12-24 15:02:40,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:02:40,747 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 108 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:02:40,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 574 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-12-24 15:02:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-24 15:02:40,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 541. [2023-12-24 15:02:40,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 454 states have (on average 1.3568281938325992) internal successors, (616), 459 states have internal predecessors, (616), 74 states have call successors, (74), 12 states have call predecessors, (74), 12 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-24 15:02:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 764 transitions. [2023-12-24 15:02:40,774 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 764 transitions. Word has length 111 [2023-12-24 15:02:40,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:40,774 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 764 transitions. [2023-12-24 15:02:40,774 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 15:02:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 764 transitions. [2023-12-24 15:02:40,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 15:02:40,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:40,776 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 15:02:40,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 15:02:40,989 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 15:02:40,989 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:40,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:40,990 INFO L85 PathProgramCache]: Analyzing trace with hash 663695970, now seen corresponding path program 1 times [2023-12-24 15:02:40,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:40,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074052220] [2023-12-24 15:02:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:40,991 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 15:02:40,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:40,992 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 15:02:40,993 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 15:02:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:41,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 15:02:41,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:41,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 15:02:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 15:02:41,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:02:42,130 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 15:02:42,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:42,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074052220] [2023-12-24 15:02:42,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074052220] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:02:42,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:02:42,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-12-24 15:02:42,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892718597] [2023-12-24 15:02:42,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:02:42,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:02:42,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:02:42,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:02:42,132 INFO L87 Difference]: Start difference. First operand 541 states and 764 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 15:02:42,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:42,372 INFO L93 Difference]: Finished difference Result 1223 states and 1725 transitions. [2023-12-24 15:02:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:02:42,373 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 15:02:42,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:42,377 INFO L225 Difference]: With dead ends: 1223 [2023-12-24 15:02:42,377 INFO L226 Difference]: Without dead ends: 799 [2023-12-24 15:02:42,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-24 15:02:42,379 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 119 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:02:42,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 446 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:02:42,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-24 15:02:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 572. [2023-12-24 15:02:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 483 states have (on average 1.349896480331263) internal successors, (652), 488 states have internal predecessors, (652), 74 states have call successors, (74), 14 states have call predecessors, (74), 14 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-24 15:02:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 800 transitions. [2023-12-24 15:02:42,416 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 800 transitions. Word has length 111 [2023-12-24 15:02:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:42,417 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 800 transitions. [2023-12-24 15:02:42,417 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 15:02:42,417 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 800 transitions. [2023-12-24 15:02:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 15:02:42,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:42,418 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 15:02:42,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 15:02:42,627 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 15:02:42,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:42,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:42,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1343754340, now seen corresponding path program 1 times [2023-12-24 15:02:42,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:42,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468949393] [2023-12-24 15:02:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:42,629 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 15:02:42,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:42,630 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 15:02:42,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 15:02:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:42,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:02:42,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:42,817 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 15:02:42,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:02:42,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:42,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468949393] [2023-12-24 15:02:42,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468949393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:02:42,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:02:42,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:02:42,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784898211] [2023-12-24 15:02:42,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:02:42,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:02:42,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:42,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:02:42,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:02:42,819 INFO L87 Difference]: Start difference. First operand 572 states and 800 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 15:02:42,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:42,909 INFO L93 Difference]: Finished difference Result 1153 states and 1623 transitions. [2023-12-24 15:02:42,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:02:42,910 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 15:02:42,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:42,914 INFO L225 Difference]: With dead ends: 1153 [2023-12-24 15:02:42,914 INFO L226 Difference]: Without dead ends: 677 [2023-12-24 15:02:42,915 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 15:02:42,916 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 15:02:42,916 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 15:02:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-12-24 15:02:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 596. [2023-12-24 15:02:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 507 states have (on average 1.3333333333333333) internal successors, (676), 512 states have internal predecessors, (676), 74 states have call successors, (74), 14 states have call predecessors, (74), 14 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-24 15:02:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 824 transitions. [2023-12-24 15:02:42,969 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 824 transitions. Word has length 111 [2023-12-24 15:02:42,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:42,969 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 824 transitions. [2023-12-24 15:02:42,970 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 15:02:42,970 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 824 transitions. [2023-12-24 15:02:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 15:02:42,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:42,971 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] [2023-12-24 15:02:42,980 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 15:02:43,180 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 15:02:43,180 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:43,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:43,181 INFO L85 PathProgramCache]: Analyzing trace with hash 559478121, now seen corresponding path program 1 times [2023-12-24 15:02:43,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:43,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427206521] [2023-12-24 15:02:43,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:43,181 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 15:02:43,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:43,183 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 15:02:43,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 15:02:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:43,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 15:02:43,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:43,531 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 8 treesize of output 1 [2023-12-24 15:02:44,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-12-24 15:02:44,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 15:02:46,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2023-12-24 15:02:46,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 49 [2023-12-24 15:02:46,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:02:46,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 48 [2023-12-24 15:02:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 172 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 15:02:46,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:02:46,509 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 15:02:46,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:46,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427206521] [2023-12-24 15:02:46,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427206521] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:02:46,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:02:46,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 19 [2023-12-24 15:02:46,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133273541] [2023-12-24 15:02:46,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:02:46,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:02:46,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:46,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:02:46,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-24 15:02:46,511 INFO L87 Difference]: Start difference. First operand 596 states and 824 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 15:02:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:46,893 INFO L93 Difference]: Finished difference Result 935 states and 1302 transitions. [2023-12-24 15:02:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 15:02:46,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 112 [2023-12-24 15:02:46,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:46,896 INFO L225 Difference]: With dead ends: 935 [2023-12-24 15:02:46,896 INFO L226 Difference]: Without dead ends: 687 [2023-12-24 15:02:46,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2023-12-24 15:02:46,897 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 92 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:02:46,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 654 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:02:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-12-24 15:02:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 592. [2023-12-24 15:02:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 503 states have (on average 1.3359840954274353) internal successors, (672), 508 states have internal predecessors, (672), 74 states have call successors, (74), 14 states have call predecessors, (74), 14 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-24 15:02:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 820 transitions. [2023-12-24 15:02:46,923 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 820 transitions. Word has length 112 [2023-12-24 15:02:46,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:46,924 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 820 transitions. [2023-12-24 15:02:46,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 15:02:46,924 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 820 transitions. [2023-12-24 15:02:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 15:02:46,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:46,925 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 15:02:46,939 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 (11)] Ended with exit code 0 [2023-12-24 15:02:47,132 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 15:02:47,132 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:47,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash 823968297, now seen corresponding path program 1 times [2023-12-24 15:02:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:47,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359069342] [2023-12-24 15:02:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:47,133 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 15:02:47,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:47,134 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 15:02:47,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 15:02:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:47,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 15:02:47,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:47,461 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 9 [2023-12-24 15:02:48,995 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 15:02:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 15:02:51,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:02:51,857 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 15:02:51,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:51,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359069342] [2023-12-24 15:02:51,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359069342] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:02:51,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:02:51,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 22 [2023-12-24 15:02:51,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001826172] [2023-12-24 15:02:51,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:02:51,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:02:51,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:51,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:02:51,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2023-12-24 15:02:51,859 INFO L87 Difference]: Start difference. First operand 592 states and 820 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 15:02:52,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:52,309 INFO L93 Difference]: Finished difference Result 1676 states and 2323 transitions. [2023-12-24 15:02:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:02:52,311 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 15:02:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:52,314 INFO L225 Difference]: With dead ends: 1676 [2023-12-24 15:02:52,314 INFO L226 Difference]: Without dead ends: 1181 [2023-12-24 15:02:52,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-12-24 15:02:52,316 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 99 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:02:52,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 481 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 15:02:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2023-12-24 15:02:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 803. [2023-12-24 15:02:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 714 states have (on average 1.3515406162464987) internal successors, (965), 719 states have internal predecessors, (965), 74 states have call successors, (74), 14 states have call predecessors, (74), 14 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-24 15:02:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1113 transitions. [2023-12-24 15:02:52,348 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1113 transitions. Word has length 113 [2023-12-24 15:02:52,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:52,348 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1113 transitions. [2023-12-24 15:02:52,348 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 15:02:52,348 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1113 transitions. [2023-12-24 15:02:52,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 15:02:52,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:52,349 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 15:02:52,358 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 (12)] Ended with exit code 0 [2023-12-24 15:02:52,556 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 15:02:52,556 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:52,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1695991637, now seen corresponding path program 1 times [2023-12-24 15:02:52,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:52,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21503832] [2023-12-24 15:02:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:52,557 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 15:02:52,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:52,558 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 15:02:52,561 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 15:02:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:52,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 15:02:52,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:52,735 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 15:02:52,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 15:02:52,786 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 15:02:52,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:02:52,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:52,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21503832] [2023-12-24 15:02:52,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21503832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:02:52,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:02:52,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:02:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141382288] [2023-12-24 15:02:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:02:52,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:02:52,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:52,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:02:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:02:52,788 INFO L87 Difference]: Start difference. First operand 803 states and 1113 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 15:02:52,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:52,953 INFO L93 Difference]: Finished difference Result 1711 states and 2370 transitions. [2023-12-24 15:02:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 15:02:52,954 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 15:02:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:52,956 INFO L225 Difference]: With dead ends: 1711 [2023-12-24 15:02:52,957 INFO L226 Difference]: Without dead ends: 1038 [2023-12-24 15:02:52,958 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 15:02:52,958 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 126 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:02:52,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 742 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:02:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-12-24 15:02:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1005. [2023-12-24 15:02:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 865 states have (on average 1.322543352601156) internal successors, (1144), 875 states have internal predecessors, (1144), 117 states have call successors, (117), 22 states have call predecessors, (117), 22 states have return successors, (117), 107 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-24 15:02:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1378 transitions. [2023-12-24 15:02:53,010 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1378 transitions. Word has length 113 [2023-12-24 15:02:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:53,011 INFO L495 AbstractCegarLoop]: Abstraction has 1005 states and 1378 transitions. [2023-12-24 15:02:53,011 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 15:02:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1378 transitions. [2023-12-24 15:02:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 15:02:53,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:53,012 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 15:02:53,018 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 15:02:53,218 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 15:02:53,218 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:53,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:53,218 INFO L85 PathProgramCache]: Analyzing trace with hash 261755516, now seen corresponding path program 1 times [2023-12-24 15:02:53,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:53,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342710553] [2023-12-24 15:02:53,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:53,219 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 15:02:53,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:53,220 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 15:02:53,220 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 15:02:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:53,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 15:02:53,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:53,415 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 15:02:53,437 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 15:02:53,466 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 15:02:53,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:02:53,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:53,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342710553] [2023-12-24 15:02:53,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342710553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:02:53,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:02:53,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:02:53,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24713831] [2023-12-24 15:02:53,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:02:53,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:02:53,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:53,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:02:53,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:02:53,468 INFO L87 Difference]: Start difference. First operand 1005 states and 1378 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 15:02:53,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:53,780 INFO L93 Difference]: Finished difference Result 2090 states and 2845 transitions. [2023-12-24 15:02:53,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 15:02:53,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 15:02:53,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:53,784 INFO L225 Difference]: With dead ends: 2090 [2023-12-24 15:02:53,784 INFO L226 Difference]: Without dead ends: 1284 [2023-12-24 15:02:53,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:02:53,786 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 120 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:02:53,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 670 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:02:53,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2023-12-24 15:02:53,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1043. [2023-12-24 15:02:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 903 states have (on average 1.3167220376522701) internal successors, (1189), 913 states have internal predecessors, (1189), 117 states have call successors, (117), 22 states have call predecessors, (117), 22 states have return successors, (117), 107 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-24 15:02:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1423 transitions. [2023-12-24 15:02:53,829 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1423 transitions. Word has length 113 [2023-12-24 15:02:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:53,829 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1423 transitions. [2023-12-24 15:02:53,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 15:02:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1423 transitions. [2023-12-24 15:02:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 15:02:53,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:53,831 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 15:02:53,840 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 (14)] Ended with exit code 0 [2023-12-24 15:02:54,040 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 15:02:54,041 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:54,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:54,041 INFO L85 PathProgramCache]: Analyzing trace with hash 519920954, now seen corresponding path program 1 times [2023-12-24 15:02:54,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:54,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559640656] [2023-12-24 15:02:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:54,042 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 15:02:54,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:54,042 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 15:02:54,044 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 15:02:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:54,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:02:54,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:54,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:02:54,300 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 15:02:58,335 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_35 (_ BitVec 32)) (v_arrayElimCell_34 (_ BitVec 32))) (let ((.cse0 (let ((.cse1 (concat v_arrayElimCell_34 v_arrayElimCell_35))) (fp ((_ extract 63 63) .cse1) ((_ extract 62 52) .cse1) ((_ extract 51 0) .cse1))))) (and (not (fp.geq (fp.neg .cse0) ((_ to_fp 11 53) c_currentRoundingMode (/ 67.0 4.0)))) (= |c_ULTIMATE.start_property_#t~mem57#1| .cse0)))) is different from true [2023-12-24 15:02:58,336 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 15:02:58,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:02:58,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:02:58,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559640656] [2023-12-24 15:02:58,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559640656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:02:58,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:02:58,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:02:58,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541080585] [2023-12-24 15:02:58,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:02:58,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:02:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:02:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:02:58,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-12-24 15:02:58,338 INFO L87 Difference]: Start difference. First operand 1043 states and 1423 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 15:02:58,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:02:58,895 INFO L93 Difference]: Finished difference Result 1802 states and 2438 transitions. [2023-12-24 15:02:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:02:58,896 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 15:02:58,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:02:58,899 INFO L225 Difference]: With dead ends: 1802 [2023-12-24 15:02:58,899 INFO L226 Difference]: Without dead ends: 958 [2023-12-24 15:02:58,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-12-24 15:02:58,901 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 49 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:02:58,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 321 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 175 Unchecked, 0.2s Time] [2023-12-24 15:02:58,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-12-24 15:02:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 651. [2023-12-24 15:02:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 558 states have (on average 1.2974910394265233) internal successors, (724), 561 states have internal predecessors, (724), 73 states have call successors, (73), 19 states have call predecessors, (73), 19 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 15:02:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 870 transitions. [2023-12-24 15:02:58,933 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 870 transitions. Word has length 113 [2023-12-24 15:02:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:02:58,933 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 870 transitions. [2023-12-24 15:02:58,933 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 15:02:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 870 transitions. [2023-12-24 15:02:58,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 15:02:58,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:02:58,934 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, 1, 1] [2023-12-24 15:02:58,942 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 (15)] Forceful destruction successful, exit code 0 [2023-12-24 15:02:59,141 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 15:02:59,142 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:02:59,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:02:59,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1476854293, now seen corresponding path program 1 times [2023-12-24 15:02:59,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:02:59,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706762327] [2023-12-24 15:02:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:02:59,143 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 15:02:59,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:02:59,144 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 15:02:59,145 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 15:02:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:02:59,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 15:02:59,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:02:59,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-12-24 15:03:00,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:03:00,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 42 [2023-12-24 15:03:00,127 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 15:03:00,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:03:00,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:03:00,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706762327] [2023-12-24 15:03:00,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706762327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:03:00,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:03:00,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:03:00,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982662803] [2023-12-24 15:03:00,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:03:00,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:03:00,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:03:00,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:03:00,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:03:00,129 INFO L87 Difference]: Start difference. First operand 651 states and 870 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) 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 15:03:00,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:03:00,466 INFO L93 Difference]: Finished difference Result 1261 states and 1687 transitions. [2023-12-24 15:03:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 15:03:00,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) 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 15:03:00,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:03:00,469 INFO L225 Difference]: With dead ends: 1261 [2023-12-24 15:03:00,469 INFO L226 Difference]: Without dead ends: 697 [2023-12-24 15:03:00,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-24 15:03:00,470 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 188 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:03:00,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 836 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:03:00,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-12-24 15:03:00,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 621. [2023-12-24 15:03:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 541 states have (on average 1.2957486136783734) internal successors, (701), 543 states have internal predecessors, (701), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (61), 59 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-24 15:03:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 823 transitions. [2023-12-24 15:03:00,511 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 823 transitions. Word has length 113 [2023-12-24 15:03:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:03:00,511 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 823 transitions. [2023-12-24 15:03:00,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) 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 15:03:00,511 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 823 transitions. [2023-12-24 15:03:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 15:03:00,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:03:00,512 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 15:03:00,524 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 15:03:00,721 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 15:03:00,722 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:03:00,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:03:00,722 INFO L85 PathProgramCache]: Analyzing trace with hash 298153069, now seen corresponding path program 1 times [2023-12-24 15:03:00,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:03:00,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447159581] [2023-12-24 15:03:00,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:03:00,723 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 15:03:00,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:03:00,724 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 15:03:00,760 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 15:03:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:03:00,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 15:03:00,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:03:01,014 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 9 [2023-12-24 15:03:02,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:03:06,235 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:03:06,236 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 65 treesize of output 46 [2023-12-24 15:03:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 15:03:07,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:03:08,531 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 15:03:08,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:03:08,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447159581] [2023-12-24 15:03:08,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447159581] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:03:08,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:03:08,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [19] total 23 [2023-12-24 15:03:08,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296350261] [2023-12-24 15:03:08,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:03:08,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:03:08,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:03:08,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:03:08,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-12-24 15:03:08,533 INFO L87 Difference]: Start difference. First operand 621 states and 823 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 15:03:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:03:09,012 INFO L93 Difference]: Finished difference Result 1215 states and 1614 transitions. [2023-12-24 15:03:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:03:09,014 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 15:03:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:03:09,016 INFO L225 Difference]: With dead ends: 1215 [2023-12-24 15:03:09,016 INFO L226 Difference]: Without dead ends: 681 [2023-12-24 15:03:09,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-12-24 15:03:09,019 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 148 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:03:09,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 387 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:03:09,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2023-12-24 15:03:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 502. [2023-12-24 15:03:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 445 states have (on average 1.303370786516854) internal successors, (580), 445 states have internal predecessors, (580), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 15:03:09,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 664 transitions. [2023-12-24 15:03:09,047 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 664 transitions. Word has length 113 [2023-12-24 15:03:09,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:03:09,047 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 664 transitions. [2023-12-24 15:03:09,047 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 15:03:09,047 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 664 transitions. [2023-12-24 15:03:09,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 15:03:09,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:03:09,049 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 15:03:09,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 15:03:09,256 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 15:03:09,256 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:03:09,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:03:09,257 INFO L85 PathProgramCache]: Analyzing trace with hash 757951857, now seen corresponding path program 1 times [2023-12-24 15:03:09,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:03:09,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218686222] [2023-12-24 15:03:09,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:03:09,257 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 15:03:09,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:03:09,258 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 15:03:09,259 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 15:03:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:03:09,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 15:03:09,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:03:09,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:03:09,863 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 15:03:09,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:03:10,111 INFO L349 Elim1Store]: treesize reduction 4, result has 69.2 percent of original size [2023-12-24 15:03:10,111 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 22 treesize of output 21 [2023-12-24 15:03:10,211 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 15:03:10,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:03:10,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218686222] [2023-12-24 15:03:10,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218686222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 15:03:10,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:03:10,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-12-24 15:03:10,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930353207] [2023-12-24 15:03:10,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:03:10,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 15:03:10,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:03:10,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 15:03:10,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:03:10,213 INFO L87 Difference]: Start difference. First operand 502 states and 664 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 15:03:11,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:03:11,187 INFO L93 Difference]: Finished difference Result 1009 states and 1329 transitions. [2023-12-24 15:03:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 15:03:11,188 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 15:03:11,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:03:11,190 INFO L225 Difference]: With dead ends: 1009 [2023-12-24 15:03:11,190 INFO L226 Difference]: Without dead ends: 588 [2023-12-24 15:03:11,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-12-24 15:03:11,191 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 279 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:03:11,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 572 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 15:03:11,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-12-24 15:03:11,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 569. [2023-12-24 15:03:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 506 states have (on average 1.290513833992095) internal successors, (653), 507 states have internal predecessors, (653), 46 states have call successors, (46), 16 states have call predecessors, (46), 16 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 15:03:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 745 transitions. [2023-12-24 15:03:11,225 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 745 transitions. Word has length 115 [2023-12-24 15:03:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:03:11,225 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 745 transitions. [2023-12-24 15:03:11,226 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 15:03:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 745 transitions. [2023-12-24 15:03:11,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 15:03:11,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:03:11,227 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 15:03:11,236 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 15:03:11,433 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 15:03:11,433 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:03:11,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:03:11,434 INFO L85 PathProgramCache]: Analyzing trace with hash -317862031, now seen corresponding path program 1 times [2023-12-24 15:03:11,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:03:11,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665522353] [2023-12-24 15:03:11,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:03:11,434 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 15:03:11,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:03:11,435 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 15:03:11,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 15:03:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:03:11,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 15:03:11,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:03:11,788 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 9 [2023-12-24 15:03:13,739 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 15:03:18,241 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:03:18,241 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 74 treesize of output 51 [2023-12-24 15:03:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 15:03:20,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:03:29,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:03:29,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665522353] [2023-12-24 15:03:29,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665522353] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:03:29,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [291789869] [2023-12-24 15:03:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:03:29,772 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:03:29,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:03:29,773 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:03:29,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-24 15:03:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:03:30,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 15:03:30,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:03:33,914 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 14 treesize of output 10 [2023-12-24 15:03:38,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-12-24 15:03:42,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 15:03:59,568 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:03:59,569 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 82 treesize of output 55 [2023-12-24 15:04:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 73 proven. 143 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 15:04:09,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:04:24,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [291789869] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:04:24,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:04:24,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 40 [2023-12-24 15:04:24,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087124174] [2023-12-24 15:04:24,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:04:24,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-24 15:04:24,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:04:24,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-24 15:04:24,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2433, Unknown=1, NotChecked=0, Total=2756 [2023-12-24 15:04:24,478 INFO L87 Difference]: Start difference. First operand 569 states and 745 transitions. Second operand has 41 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 34 states have internal predecessors, (100), 9 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2023-12-24 15:04:41,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:05:26,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:06:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:06:19,868 INFO L93 Difference]: Finished difference Result 1618 states and 2094 transitions. [2023-12-24 15:06:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-24 15:06:19,869 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 34 states have internal predecessors, (100), 9 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) Word has length 115 [2023-12-24 15:06:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:06:19,872 INFO L225 Difference]: With dead ends: 1618 [2023-12-24 15:06:19,872 INFO L226 Difference]: Without dead ends: 1348 [2023-12-24 15:06:19,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 120.8s TimeCoverageRelationStatistics Valid=1316, Invalid=6515, Unknown=1, NotChecked=0, Total=7832 [2023-12-24 15:06:19,875 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 1801 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:06:19,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1801 Valid, 2205 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 53.9s Time] [2023-12-24 15:06:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2023-12-24 15:06:19,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 571. [2023-12-24 15:06:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 508 states have (on average 1.2893700787401574) internal successors, (655), 509 states have internal predecessors, (655), 46 states have call successors, (46), 16 states have call predecessors, (46), 16 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 15:06:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 747 transitions. [2023-12-24 15:06:19,915 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 747 transitions. Word has length 115 [2023-12-24 15:06:19,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:06:19,915 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 747 transitions. [2023-12-24 15:06:19,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 34 states have internal predecessors, (100), 9 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2023-12-24 15:06:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 747 transitions. [2023-12-24 15:06:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 15:06:19,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:06:19,916 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 15:06:19,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2023-12-24 15:06:20,133 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 15:06:20,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 15:06:20,326 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:06:20,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:06:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1676282675, now seen corresponding path program 1 times [2023-12-24 15:06:20,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:06:20,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927551023] [2023-12-24 15:06:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:06:20,327 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 15:06:20,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:06:20,328 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 15:06:20,330 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 15:06:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:06:20,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 15:06:20,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:06:25,696 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2023-12-24 15:06:25,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2023-12-24 15:06:26,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:06:26,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 15:06:26,185 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 15:06:26,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:06:26,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:06:26,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927551023] [2023-12-24 15:06:26,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927551023] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:06:26,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [257793433] [2023-12-24 15:06:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:06:26,664 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:06:26,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:06:26,665 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:06:26,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-24 15:06:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:06:27,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 15:06:27,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:06:29,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:06:32,744 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2023-12-24 15:06:32,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 36 [2023-12-24 15:06:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-24 15:06:33,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:06:33,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [257793433] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:06:33,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:06:33,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2023-12-24 15:06:33,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475689736] [2023-12-24 15:06:33,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:06:33,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 15:06:33,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:06:33,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 15:06:33,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-24 15:06:33,745 INFO L87 Difference]: Start difference. First operand 571 states and 747 transitions. Second operand has 15 states, 14 states have (on average 6.714285714285714) internal successors, (94), 13 states have internal predecessors, (94), 5 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 15:06:38,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:06:38,597 INFO L93 Difference]: Finished difference Result 1127 states and 1450 transitions. [2023-12-24 15:06:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 15:06:38,598 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.714285714285714) internal successors, (94), 13 states have internal predecessors, (94), 5 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 115 [2023-12-24 15:06:38,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:06:38,600 INFO L225 Difference]: With dead ends: 1127 [2023-12-24 15:06:38,600 INFO L226 Difference]: Without dead ends: 828 [2023-12-24 15:06:38,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=289, Invalid=901, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 15:06:38,601 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 542 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 15:06:38,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 761 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 15:06:38,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-12-24 15:06:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 501. [2023-12-24 15:06:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 437 states have (on average 1.2562929061784898) internal successors, (549), 438 states have internal predecessors, (549), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 15:06:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 641 transitions. [2023-12-24 15:06:38,655 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 641 transitions. Word has length 115 [2023-12-24 15:06:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:06:38,655 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 641 transitions. [2023-12-24 15:06:38,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.714285714285714) internal successors, (94), 13 states have internal predecessors, (94), 5 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 15:06:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 641 transitions. [2023-12-24 15:06:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 15:06:38,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:06:38,656 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 15:06:38,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-12-24 15:06:38,875 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 15:06:39,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:06:39,065 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:06:39,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:06:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1934448113, now seen corresponding path program 1 times [2023-12-24 15:06:39,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:06:39,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114495584] [2023-12-24 15:06:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:06:39,066 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 15:06:39,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:06:39,067 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 15:06:39,068 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 15:06:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:06:39,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 15:06:39,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:06:40,166 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 15:06:41,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-12-24 15:06:46,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-12-24 15:06:47,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:06:47,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 38 [2023-12-24 15:06:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 19 proven. 160 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-12-24 15:06:47,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:06:48,378 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 15:06:48,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:06:48,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114495584] [2023-12-24 15:06:48,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114495584] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:06:48,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:06:48,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2023-12-24 15:06:48,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755044615] [2023-12-24 15:06:48,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:06:48,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:06:48,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:06:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:06:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-12-24 15:06:48,380 INFO L87 Difference]: Start difference. First operand 501 states and 641 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 15:06:49,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:06:49,632 INFO L93 Difference]: Finished difference Result 882 states and 1132 transitions. [2023-12-24 15:06:49,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 15:06:49,633 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 15:06:49,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:06:49,635 INFO L225 Difference]: With dead ends: 882 [2023-12-24 15:06:49,635 INFO L226 Difference]: Without dead ends: 662 [2023-12-24 15:06:49,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2023-12-24 15:06:49,636 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 99 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:06:49,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 801 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 15:06:49,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-12-24 15:06:49,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 543. [2023-12-24 15:06:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 479 states have (on average 1.254697286012526) internal successors, (601), 480 states have internal predecessors, (601), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 15:06:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 693 transitions. [2023-12-24 15:06:49,681 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 693 transitions. Word has length 115 [2023-12-24 15:06:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:06:49,681 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 693 transitions. [2023-12-24 15:06:49,681 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 15:06:49,681 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 693 transitions. [2023-12-24 15:06:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 15:06:49,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:06:49,682 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 15:06:49,712 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 15:06:49,896 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 15:06:49,896 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:06:49,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:06:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash -574915759, now seen corresponding path program 1 times [2023-12-24 15:06:49,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:06:49,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310670293] [2023-12-24 15:06:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:06:49,897 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 15:06:49,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:06:49,898 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 15:06:49,916 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 15:06:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:06:50,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 15:06:50,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:06:50,413 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 9 [2023-12-24 15:06:56,640 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 15:07:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 15:07:12,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:07:29,048 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 15:07:29,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:07:29,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310670293] [2023-12-24 15:07:29,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310670293] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:07:29,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:07:29,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22] total 31 [2023-12-24 15:07:29,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915175926] [2023-12-24 15:07:29,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:07:29,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 15:07:29,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:07:29,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 15:07:29,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2023-12-24 15:07:29,050 INFO L87 Difference]: Start difference. First operand 543 states and 693 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 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 15:07:45,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:07:45,481 INFO L93 Difference]: Finished difference Result 1328 states and 1712 transitions. [2023-12-24 15:07:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 15:07:45,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 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 15:07:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:07:45,493 INFO L225 Difference]: With dead ends: 1328 [2023-12-24 15:07:45,493 INFO L226 Difference]: Without dead ends: 1065 [2023-12-24 15:07:45,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=179, Invalid=1011, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 15:07:45,494 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 350 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:07:45,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 923 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-12-24 15:07:45,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-24 15:07:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 567. [2023-12-24 15:07:45,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 503 states have (on average 1.2524850894632207) internal successors, (630), 504 states have internal predecessors, (630), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 15:07:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 722 transitions. [2023-12-24 15:07:45,541 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 722 transitions. Word has length 115 [2023-12-24 15:07:45,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:07:45,541 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 722 transitions. [2023-12-24 15:07:45,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 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 15:07:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 722 transitions. [2023-12-24 15:07:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 15:07:45,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:07:45,542 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] [2023-12-24 15:07:45,554 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 15:07:45,754 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 15:07:45,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:07:45,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:07:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1419228947, now seen corresponding path program 1 times [2023-12-24 15:07:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:07:45,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040442936] [2023-12-24 15:07:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:07:45,755 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 15:07:45,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:07:45,756 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 15:07:45,757 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 15:07:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:07:46,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 15:07:46,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:07:46,195 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 9 [2023-12-24 15:07:52,468 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 15:08:17,361 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:08:17,361 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 89 treesize of output 58 [2023-12-24 15:08:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 15:08:21,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:08:36,418 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 15:08:36,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:08:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040442936] [2023-12-24 15:08:36,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040442936] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:08:36,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:08:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [24] total 33 [2023-12-24 15:08:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615739311] [2023-12-24 15:08:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:08:36,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 15:08:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:08:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 15:08:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 15:08:36,420 INFO L87 Difference]: Start difference. First operand 567 states and 722 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 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 15:08:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:08:52,007 INFO L93 Difference]: Finished difference Result 1256 states and 1616 transitions. [2023-12-24 15:08:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 15:08:52,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 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 15:08:52,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:08:52,019 INFO L225 Difference]: With dead ends: 1256 [2023-12-24 15:08:52,019 INFO L226 Difference]: Without dead ends: 983 [2023-12-24 15:08:52,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 42.9s TimeCoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 15:08:52,020 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 349 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:08:52,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 910 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-24 15:08:52,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2023-12-24 15:08:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 585. [2023-12-24 15:08:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 521 states have (on average 1.2476007677543186) internal successors, (650), 522 states have internal predecessors, (650), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 15:08:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 742 transitions. [2023-12-24 15:08:52,074 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 742 transitions. Word has length 115 [2023-12-24 15:08:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:08:52,074 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 742 transitions. [2023-12-24 15:08:52,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 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 15:08:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 742 transitions. [2023-12-24 15:08:52,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 15:08:52,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:08:52,075 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 15:08:52,085 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 (25)] Ended with exit code 0 [2023-12-24 15:08:52,282 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 15:08:52,283 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:08:52,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:08:52,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1730528953, now seen corresponding path program 1 times [2023-12-24 15:08:52,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:08:52,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931553256] [2023-12-24 15:08:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:08:52,284 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 15:08:52,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:08:52,285 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 15:08:52,304 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 15:08:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:08:52,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 15:08:52,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:08:52,628 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 15:08:52,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:08:52,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:08:52,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931553256] [2023-12-24 15:08:52,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931553256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:08:52,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:08:52,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:08:52,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451570432] [2023-12-24 15:08:52,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:08:52,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:08:52,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:08:52,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:08:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:08:52,630 INFO L87 Difference]: Start difference. First operand 585 states and 742 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 15:08:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:08:52,888 INFO L93 Difference]: Finished difference Result 599 states and 758 transitions. [2023-12-24 15:08:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:08:52,890 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 15:08:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:08:52,892 INFO L225 Difference]: With dead ends: 599 [2023-12-24 15:08:52,892 INFO L226 Difference]: Without dead ends: 597 [2023-12-24 15:08:52,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:08:52,892 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 7 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:08:52,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 450 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:08:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-12-24 15:08:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 594. [2023-12-24 15:08:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 530 states have (on average 1.2433962264150944) internal successors, (659), 531 states have internal predecessors, (659), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 15:08:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 751 transitions. [2023-12-24 15:08:52,938 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 751 transitions. Word has length 115 [2023-12-24 15:08:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:08:52,938 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 751 transitions. [2023-12-24 15:08:52,938 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 15:08:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 751 transitions. [2023-12-24 15:08:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 15:08:52,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:08:52,939 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 15:08:52,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-12-24 15:08:53,146 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 15:08:53,146 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:08:53,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:08:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash 501009535, now seen corresponding path program 1 times [2023-12-24 15:08:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:08:53,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670664910] [2023-12-24 15:08:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:08:53,147 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 15:08:53,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:08:53,148 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 15:08:53,152 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 15:08:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:08:53,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 15:08:53,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:08:53,585 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 9 [2023-12-24 15:08:59,796 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 15:09:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 15:09:20,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:09:37,838 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 15:09:37,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:09:37,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670664910] [2023-12-24 15:09:37,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670664910] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:09:37,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:09:37,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [23] total 34 [2023-12-24 15:09:37,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108329271] [2023-12-24 15:09:37,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:09:37,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 15:09:37,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:09:37,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 15:09:37,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 15:09:37,840 INFO L87 Difference]: Start difference. First operand 594 states and 751 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 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 15:10:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:10:02,129 INFO L93 Difference]: Finished difference Result 1774 states and 2243 transitions. [2023-12-24 15:10:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 15:10:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 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 116 [2023-12-24 15:10:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:10:02,141 INFO L225 Difference]: With dead ends: 1774 [2023-12-24 15:10:02,141 INFO L226 Difference]: Without dead ends: 1507 [2023-12-24 15:10:02,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 42.7s TimeCoverageRelationStatistics Valid=253, Invalid=1553, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 15:10:02,142 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 851 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:10:02,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1276 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2023-12-24 15:10:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2023-12-24 15:10:02,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 670. [2023-12-24 15:10:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 598 states have (on average 1.2424749163879598) internal successors, (743), 600 states have internal predecessors, (743), 52 states have call successors, (52), 19 states have call predecessors, (52), 19 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 15:10:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 847 transitions. [2023-12-24 15:10:02,199 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 847 transitions. Word has length 116 [2023-12-24 15:10:02,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:10:02,199 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 847 transitions. [2023-12-24 15:10:02,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 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 15:10:02,200 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 847 transitions. [2023-12-24 15:10:02,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 15:10:02,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:10:02,200 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 15:10:02,208 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 15:10:02,407 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 15:10:02,408 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:10:02,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:10:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash -85796479, now seen corresponding path program 1 times [2023-12-24 15:10:02,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:10:02,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781304622] [2023-12-24 15:10:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:10:02,409 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 15:10:02,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:10:02,410 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 15:10:02,410 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 15:10:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:10:02,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 15:10:02,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:10:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 2 proven. 138 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 15:10:13,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:10:21,194 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 15:10:21,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:10:21,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781304622] [2023-12-24 15:10:21,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781304622] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:10:21,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:10:21,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 25 [2023-12-24 15:10:21,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134239992] [2023-12-24 15:10:21,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:10:21,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 15:10:21,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:10:21,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 15:10:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2023-12-24 15:10:21,197 INFO L87 Difference]: Start difference. First operand 670 states and 847 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 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 15:10:41,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:10:41,937 INFO L93 Difference]: Finished difference Result 1792 states and 2284 transitions. [2023-12-24 15:10:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 15:10:41,944 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 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 116 [2023-12-24 15:10:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:10:41,947 INFO L225 Difference]: With dead ends: 1792 [2023-12-24 15:10:41,947 INFO L226 Difference]: Without dead ends: 1469 [2023-12-24 15:10:41,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 15:10:41,953 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 672 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:10:41,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1481 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2023-12-24 15:10:41,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2023-12-24 15:10:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 668. [2023-12-24 15:10:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 596 states have (on average 1.2365771812080537) internal successors, (737), 598 states have internal predecessors, (737), 52 states have call successors, (52), 19 states have call predecessors, (52), 19 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 15:10:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 841 transitions. [2023-12-24 15:10:42,010 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 841 transitions. Word has length 116 [2023-12-24 15:10:42,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:10:42,010 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 841 transitions. [2023-12-24 15:10:42,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 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 15:10:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 841 transitions. [2023-12-24 15:10:42,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 15:10:42,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:10:42,011 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 15:10:42,021 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 15:10:42,218 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 15:10:42,219 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:10:42,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:10:42,219 INFO L85 PathProgramCache]: Analyzing trace with hash 20140831, now seen corresponding path program 1 times [2023-12-24 15:10:42,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:10:42,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336409231] [2023-12-24 15:10:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:10:42,220 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 15:10:42,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:10:42,221 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 15:10:42,221 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 15:10:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:10:42,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 15:10:42,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:10:42,451 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 15:10:42,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 15:10:42,791 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 15:10:42,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:10:42,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:10:42,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336409231] [2023-12-24 15:10:42,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336409231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:10:42,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:10:42,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:10:42,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491606359] [2023-12-24 15:10:42,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:10:42,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:10:42,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:10:42,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:10:42,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:10:42,793 INFO L87 Difference]: Start difference. First operand 668 states and 841 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 15:10:43,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:10:43,783 INFO L93 Difference]: Finished difference Result 1118 states and 1410 transitions. [2023-12-24 15:10:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 15:10:43,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 116 [2023-12-24 15:10:43,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:10:43,786 INFO L225 Difference]: With dead ends: 1118 [2023-12-24 15:10:43,786 INFO L226 Difference]: Without dead ends: 804 [2023-12-24 15:10:43,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:10:43,787 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 101 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:10:43,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 838 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 15:10:43,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2023-12-24 15:10:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 684. [2023-12-24 15:10:43,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 612 states have (on average 1.2434640522875817) internal successors, (761), 614 states have internal predecessors, (761), 52 states have call successors, (52), 19 states have call predecessors, (52), 19 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 15:10:43,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 865 transitions. [2023-12-24 15:10:43,842 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 865 transitions. Word has length 116 [2023-12-24 15:10:43,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:10:43,843 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 865 transitions. [2023-12-24 15:10:43,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 15:10:43,843 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 865 transitions. [2023-12-24 15:10:43,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 15:10:43,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:10:43,843 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 15:10:43,854 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 15:10:44,051 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 15:10:44,051 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:10:44,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:10:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1554038648, now seen corresponding path program 1 times [2023-12-24 15:10:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:10:44,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820596678] [2023-12-24 15:10:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:10:44,052 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 15:10:44,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:10:44,053 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 15:10:44,053 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 15:10:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:10:44,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 15:10:44,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:10:47,053 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 15:10:47,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:10:47,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:10:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820596678] [2023-12-24 15:10:47,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820596678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:10:47,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:10:47,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 15:10:47,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200643697] [2023-12-24 15:10:47,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:10:47,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 15:10:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:10:47,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 15:10:47,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:10:47,055 INFO L87 Difference]: Start difference. First operand 684 states and 865 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 15:10:55,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:10:55,195 INFO L93 Difference]: Finished difference Result 1697 states and 2159 transitions. [2023-12-24 15:10:55,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 15:10:55,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 116 [2023-12-24 15:10:55,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:10:55,208 INFO L225 Difference]: With dead ends: 1697 [2023-12-24 15:10:55,208 INFO L226 Difference]: Without dead ends: 1342 [2023-12-24 15:10:55,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:10:55,209 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 166 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:10:55,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 937 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-24 15:10:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2023-12-24 15:10:55,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 748. [2023-12-24 15:10:55,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 676 states have (on average 1.2470414201183433) internal successors, (843), 678 states have internal predecessors, (843), 52 states have call successors, (52), 19 states have call predecessors, (52), 19 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 15:10:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 947 transitions. [2023-12-24 15:10:55,274 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 947 transitions. Word has length 116 [2023-12-24 15:10:55,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:10:55,274 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 947 transitions. [2023-12-24 15:10:55,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 15:10:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 947 transitions. [2023-12-24 15:10:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 15:10:55,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:10:55,275 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 15:10:55,283 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 15:10:55,476 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 15:10:55,476 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:10:55,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:10:55,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1420025142, now seen corresponding path program 1 times [2023-12-24 15:10:55,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:10:55,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133233904] [2023-12-24 15:10:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:10:55,477 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 15:10:55,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:10:55,478 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 15:10:55,478 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 15:10:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:10:55,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 15:10:55,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:10:58,838 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 15:10:58,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:10:58,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:10:58,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133233904] [2023-12-24 15:10:58,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133233904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:10:58,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:10:58,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 15:10:58,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531352356] [2023-12-24 15:10:58,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:10:58,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 15:10:58,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:10:58,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 15:10:58,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:10:58,840 INFO L87 Difference]: Start difference. First operand 748 states and 947 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 15:11:09,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:11:09,208 INFO L93 Difference]: Finished difference Result 1764 states and 2241 transitions. [2023-12-24 15:11:09,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 15:11:09,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 116 [2023-12-24 15:11:09,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:11:09,222 INFO L225 Difference]: With dead ends: 1764 [2023-12-24 15:11:09,222 INFO L226 Difference]: Without dead ends: 1376 [2023-12-24 15:11:09,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:11:09,223 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 190 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:11:09,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 894 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-24 15:11:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2023-12-24 15:11:09,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 718. [2023-12-24 15:11:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 646 states have (on average 1.2399380804953561) internal successors, (801), 648 states have internal predecessors, (801), 52 states have call successors, (52), 19 states have call predecessors, (52), 19 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 15:11:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 905 transitions. [2023-12-24 15:11:09,295 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 905 transitions. Word has length 116 [2023-12-24 15:11:09,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:11:09,295 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 905 transitions. [2023-12-24 15:11:09,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 15:11:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 905 transitions. [2023-12-24 15:11:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 15:11:09,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:11:09,296 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 15:11:09,306 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 15:11:09,504 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 15:11:09,504 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:11:09,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:11:09,505 INFO L85 PathProgramCache]: Analyzing trace with hash 629345899, now seen corresponding path program 1 times [2023-12-24 15:11:09,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:11:09,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155223697] [2023-12-24 15:11:09,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:09,505 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 15:11:09,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:11:09,506 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 15:11:09,507 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 15:11:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:09,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 15:11:09,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:11,381 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 15:11:11,485 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 15:11:11,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:11:12,434 INFO L349 Elim1Store]: treesize reduction 4, result has 69.2 percent of original size [2023-12-24 15:11:12,435 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 22 treesize of output 21 [2023-12-24 15:11:12,754 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 15:11:12,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:11:12,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155223697] [2023-12-24 15:11:12,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155223697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 15:11:12,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:11:12,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-24 15:11:12,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664091509] [2023-12-24 15:11:12,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:11:12,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 15:11:12,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:11:12,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 15:11:12,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:11:12,756 INFO L87 Difference]: Start difference. First operand 718 states and 905 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 15:11:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:11:15,616 INFO L93 Difference]: Finished difference Result 1269 states and 1602 transitions. [2023-12-24 15:11:15,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 15:11:15,617 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 15:11:15,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:11:15,619 INFO L225 Difference]: With dead ends: 1269 [2023-12-24 15:11:15,620 INFO L226 Difference]: Without dead ends: 835 [2023-12-24 15:11:15,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-24 15:11:15,621 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 151 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:11:15,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 638 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 15:11:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-12-24 15:11:15,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 718. [2023-12-24 15:11:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 646 states have (on average 1.2352941176470589) internal successors, (798), 648 states have internal predecessors, (798), 52 states have call successors, (52), 19 states have call predecessors, (52), 19 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 15:11:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 902 transitions. [2023-12-24 15:11:15,676 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 902 transitions. Word has length 117 [2023-12-24 15:11:15,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:11:15,676 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 902 transitions. [2023-12-24 15:11:15,676 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 15:11:15,676 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 902 transitions. [2023-12-24 15:11:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 15:11:15,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:11:15,677 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, 1, 1, 1, 1] [2023-12-24 15:11:15,684 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 15:11:15,884 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 15:11:15,884 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:11:15,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:11:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1052047725, now seen corresponding path program 1 times [2023-12-24 15:11:15,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:11:15,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456507807] [2023-12-24 15:11:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:15,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:15,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:11:15,886 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 15:11:15,887 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 15:11:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:16,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 15:11:16,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 2 proven. 138 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 15:11:23,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:11:33,833 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 15:11:33,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:11:33,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456507807] [2023-12-24 15:11:33,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456507807] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:11:33,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:11:33,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2023-12-24 15:11:33,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534857487] [2023-12-24 15:11:33,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:11:33,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 15:11:33,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:11:33,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 15:11:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-12-24 15:11:33,835 INFO L87 Difference]: Start difference. First operand 718 states and 902 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 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 15:11:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:11:46,361 INFO L93 Difference]: Finished difference Result 1530 states and 1923 transitions. [2023-12-24 15:11:46,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 15:11:46,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 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 15:11:46,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:11:46,372 INFO L225 Difference]: With dead ends: 1530 [2023-12-24 15:11:46,372 INFO L226 Difference]: Without dead ends: 1166 [2023-12-24 15:11:46,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2023-12-24 15:11:46,373 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 367 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-24 15:11:46,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 788 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-12-24 15:11:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2023-12-24 15:11:46,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 704. [2023-12-24 15:11:46,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 632 states have (on average 1.231012658227848) internal successors, (778), 634 states have internal predecessors, (778), 52 states have call successors, (52), 19 states have call predecessors, (52), 19 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 15:11:46,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 882 transitions. [2023-12-24 15:11:46,429 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 882 transitions. Word has length 117 [2023-12-24 15:11:46,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:11:46,429 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 882 transitions. [2023-12-24 15:11:46,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 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 15:11:46,430 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 882 transitions. [2023-12-24 15:11:46,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 15:11:46,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:11:46,430 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 15:11:46,441 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 15:11:46,631 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 15:11:46,631 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:11:46,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:11:46,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1248774865, now seen corresponding path program 1 times [2023-12-24 15:11:46,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:11:46,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483103442] [2023-12-24 15:11:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:46,632 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 15:11:46,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:11:46,633 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 15:11:46,634 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 15:11:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:46,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 15:11:46,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:50,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:11:50,913 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 58 treesize of output 42 [2023-12-24 15:11:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 15:11:52,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:11:56,149 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 15:11:56,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:11:56,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483103442] [2023-12-24 15:11:56,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483103442] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:11:56,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:11:56,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-24 15:11:56,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109366437] [2023-12-24 15:11:56,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:11:56,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:11:56,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:11:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:11:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:11:56,150 INFO L87 Difference]: Start difference. First operand 704 states and 882 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 15:12:01,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:12:01,771 INFO L93 Difference]: Finished difference Result 1351 states and 1693 transitions. [2023-12-24 15:12:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 15:12:01,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 15:12:01,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:12:01,786 INFO L225 Difference]: With dead ends: 1351 [2023-12-24 15:12:01,786 INFO L226 Difference]: Without dead ends: 994 [2023-12-24 15:12:01,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-24 15:12:01,787 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 235 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:12:01,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 474 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-24 15:12:01,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2023-12-24 15:12:01,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 690. [2023-12-24 15:12:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 618 states have (on average 1.226537216828479) internal successors, (758), 620 states have internal predecessors, (758), 52 states have call successors, (52), 19 states have call predecessors, (52), 19 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 15:12:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 862 transitions. [2023-12-24 15:12:01,842 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 862 transitions. Word has length 117 [2023-12-24 15:12:01,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:12:01,842 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 862 transitions. [2023-12-24 15:12:01,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 15:12:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 862 transitions. [2023-12-24 15:12:01,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 15:12:01,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:12:01,843 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 15:12:01,853 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 (34)] Ended with exit code 0 [2023-12-24 15:12:02,050 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 15:12:02,050 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:12:02,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:12:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1206487540, now seen corresponding path program 1 times [2023-12-24 15:12:02,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:12:02,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509842239] [2023-12-24 15:12:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:12:02,051 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 15:12:02,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:12:02,052 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 15:12:02,052 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 15:12:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:12:02,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 15:12:02,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:12:02,580 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 9 [2023-12-24 15:12:08,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:12:10,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:12:10,593 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 50 treesize of output 42 [2023-12-24 15:12:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 15:12:11,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:12:15,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:12:15,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509842239] [2023-12-24 15:12:15,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509842239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:12:15,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [406036645] [2023-12-24 15:12:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:12:15,268 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:12:15,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:12:15,269 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:12:15,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2023-12-24 15:12:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:12:16,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 15:12:16,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:12:23,331 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 14 treesize of output 10 [2023-12-24 15:12:28,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2023-12-24 15:12:32,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2023-12-24 15:12:37,719 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:12:37,719 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 74 treesize of output 51 [2023-12-24 15:12:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 73 proven. 143 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 15:12:43,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:12:48,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [406036645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:12:48,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:12:48,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 34 [2023-12-24 15:12:48,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664426616] [2023-12-24 15:12:48,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:12:48,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-24 15:12:48,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:12:48,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-24 15:12:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 15:12:48,770 INFO L87 Difference]: Start difference. First operand 690 states and 862 transitions. Second operand has 35 states, 31 states have (on average 3.225806451612903) internal successors, (100), 28 states have internal predecessors, (100), 9 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2023-12-24 15:13:05,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:13:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:13:56,688 INFO L93 Difference]: Finished difference Result 1954 states and 2418 transitions. [2023-12-24 15:13:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 15:13:56,689 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 3.225806451612903) internal successors, (100), 28 states have internal predecessors, (100), 9 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) Word has length 117 [2023-12-24 15:13:56,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:13:56,692 INFO L225 Difference]: With dead ends: 1954 [2023-12-24 15:13:56,692 INFO L226 Difference]: Without dead ends: 1351 [2023-12-24 15:13:56,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=775, Invalid=3780, Unknown=1, NotChecked=0, Total=4556 [2023-12-24 15:13:56,694 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1134 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:13:56,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1454 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 39.0s Time] [2023-12-24 15:13:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2023-12-24 15:13:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 695. [2023-12-24 15:13:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 623 states have (on average 1.2263242375601926) internal successors, (764), 625 states have internal predecessors, (764), 52 states have call successors, (52), 19 states have call predecessors, (52), 19 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 15:13:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 868 transitions. [2023-12-24 15:13:56,770 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 868 transitions. Word has length 117 [2023-12-24 15:13:56,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:13:56,770 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 868 transitions. [2023-12-24 15:13:56,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 3.225806451612903) internal successors, (100), 28 states have internal predecessors, (100), 9 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2023-12-24 15:13:56,770 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 868 transitions. [2023-12-24 15:13:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 15:13:56,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:13:56,771 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 15:13:56,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 15:13:56,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2023-12-24 15:13:57,175 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=3,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:13:57,175 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:13:57,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:13:57,175 INFO L85 PathProgramCache]: Analyzing trace with hash 286568244, now seen corresponding path program 1 times [2023-12-24 15:13:57,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:13:57,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556369068] [2023-12-24 15:13:57,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:13:57,176 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 15:13:57,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:13:57,177 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 15:13:57,182 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 15:13:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:13:58,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 15:13:58,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:13:58,427 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 9 [2023-12-24 15:14:11,080 INFO L349 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2023-12-24 15:14:11,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 49 [2023-12-24 15:14:27,212 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:14:27,212 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 45 treesize of output 38 [2023-12-24 15:14:27,403 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:14:27,403 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 70 treesize of output 47 [2023-12-24 15:14:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 15:14:29,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:15:22,954 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 16) c_~last_1_signed_short_int_Array_0_1_~0)) (.cse4 ((_ sign_extend 16) ((_ extract 15 0) (select (select |c_#memory_int#4| c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset)))) (.cse2 ((_ sign_extend 24) ((_ extract 7 0) (select (select |c_#memory_int#3| c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset))))) (or (forall ((~signed_short_int_Array_0_arraysigned_short_int_Array_0Var1_Pointer~0.base (_ BitVec 32)) (~signed_short_int_Array_0_arraysigned_short_int_Array_0Var1_Pointer~0.offset (_ BitVec 32))) (let ((.cse3 ((_ sign_extend 16) ((_ extract 15 0) (bvadd (_ bv4294967040 32) .cse4))))) (let ((.cse1 ((_ sign_extend 16) ((_ extract 15 0) (select (select (store |c_#memory_int#4| ~signed_short_int_Array_0_arraysigned_short_int_Array_0Var1_Pointer~0.base (store (select |c_#memory_int#4| ~signed_short_int_Array_0_arraysigned_short_int_Array_0Var1_Pointer~0.base) ~signed_short_int_Array_0_arraysigned_short_int_Array_0Var1_Pointer~0.offset .cse3)) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset))))) (or (not (bvsle .cse0 (bvsdiv .cse1 .cse2))) (not (= ((_ sign_extend 16) ((_ extract 15 0) (bvadd .cse1 (_ bv4294967040 32)))) ((_ sign_extend 16) ((_ extract 15 0) .cse3)))))))) (forall ((~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.base (_ BitVec 32)) (~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.offset (_ BitVec 32))) (let ((.cse5 ((_ sign_extend 24) ((_ extract 7 0) (select (select |c_#memory_int#3| ~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.base) ~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.offset))))) (or (not (bvslt .cse2 .cse5)) (not (bvslt (bvadd (bvor .cse5 .cse5) .cse2) .cse5))))) (bvsle .cse0 (bvsdiv .cse4 .cse2)))) is different from true [2023-12-24 15:15:31,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:15:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556369068] [2023-12-24 15:15:31,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556369068] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:15:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [753753030] [2023-12-24 15:15:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:15:31,312 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:15:31,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:15:31,313 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:15:31,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2023-12-24 15:15:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:15:32,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 15:15:32,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:41,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 15:15:49,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-12-24 15:16:04,384 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2023-12-24 15:16:04,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 64 Received shutdown request... [2023-12-24 15:16:30,993 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 15:16:31,018 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 15:16:31,025 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 15:16:31,194 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 15:16:31,203 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 15:16:31,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2023-12-24 15:16:31,596 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=3,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:16:31,596 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 118 with TraceHistMax 14,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-5-2-3-2-3-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∧-2-1 context. [2023-12-24 15:16:31,600 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:16:31,601 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 15:16:31,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 03:16:31 BoogieIcfgContainer [2023-12-24 15:16:31,603 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 15:16:31,603 INFO L158 Benchmark]: Toolchain (without parser) took 875600.39ms. Allocated memory was 312.5MB in the beginning and 375.4MB in the end (delta: 62.9MB). Free memory was 261.5MB in the beginning and 130.1MB in the end (delta: 131.4MB). Peak memory consumption was 195.0MB. Max. memory is 8.0GB. [2023-12-24 15:16:31,603 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 15:16:31,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.69ms. Allocated memory is still 312.5MB. Free memory was 261.2MB in the beginning and 246.0MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 15:16:31,603 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.39ms. Allocated memory is still 312.5MB. Free memory was 246.0MB in the beginning and 242.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 15:16:31,604 INFO L158 Benchmark]: Boogie Preprocessor took 53.92ms. Allocated memory is still 312.5MB. Free memory was 242.9MB in the beginning and 238.1MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 15:16:31,604 INFO L158 Benchmark]: RCFGBuilder took 706.92ms. Allocated memory is still 312.5MB. Free memory was 238.0MB in the beginning and 256.2MB in the end (delta: -18.2MB). Peak memory consumption was 21.7MB. Max. memory is 8.0GB. [2023-12-24 15:16:31,604 INFO L158 Benchmark]: TraceAbstraction took 874558.93ms. Allocated memory was 312.5MB in the beginning and 375.4MB in the end (delta: 62.9MB). Free memory was 255.6MB in the beginning and 130.1MB in the end (delta: 125.6MB). Peak memory consumption was 188.0MB. Max. memory is 8.0GB. [2023-12-24 15:16:31,604 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 184.5MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.69ms. Allocated memory is still 312.5MB. Free memory was 261.2MB in the beginning and 246.0MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.39ms. Allocated memory is still 312.5MB. Free memory was 246.0MB in the beginning and 242.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.92ms. Allocated memory is still 312.5MB. Free memory was 242.9MB in the beginning and 238.1MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 706.92ms. Allocated memory is still 312.5MB. Free memory was 238.0MB in the beginning and 256.2MB in the end (delta: -18.2MB). Peak memory consumption was 21.7MB. Max. memory is 8.0GB. * TraceAbstraction took 874558.93ms. Allocated memory was 312.5MB in the beginning and 375.4MB in the end (delta: 62.9MB). Free memory was 255.6MB in the beginning and 130.1MB in the end (delta: 125.6MB). Peak memory consumption was 188.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 118 with TraceHistMax 14,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-5-2-3-2-3-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∧-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 874.5s, OverallIterations: 32, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 340.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 10373 SdHoareTripleChecker+Valid, 200.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10372 mSDsluCounter, 23785 SdHoareTripleChecker+Invalid, 177.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 175 IncrementalHoareTripleChecker+Unchecked, 19136 mSDsCounter, 1306 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8846 IncrementalHoareTripleChecker+Invalid, 10328 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1306 mSolverCounterUnsat, 4649 mSDtfsCounter, 8846 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5878 GetRequests, 5213 SyntacticMatches, 9 SemanticMatches, 656 ConstructedPredicates, 1 IntricatePredicates, 6 DeprecatedPredicates, 6833 ImplicationChecksByTransitivity, 382.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1043occurred in iteration=12, InterpolantAutomatonStates: 366, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 31 MinimizatonAttempts, 8719 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 6.9s SatisfiabilityAnalysisTime, 360.3s InterpolantComputationTime, 3979 NumberOfCodeBlocks, 3979 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 5423 ConstructedInterpolants, 374 QuantifiedInterpolants, 58423 SizeOfPredicates, 416 NumberOfNonLiveVariables, 9190 ConjunctsInSsa, 605 ConjunctsInUnsatCore, 48 InterpolantComputations, 25 PerfectInterpolantSequences, 14155/17472 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown