/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-96.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 17:26:54,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 17:26:54,850 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 17:26:54,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 17:26:54,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 17:26:54,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 17:26:54,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 17:26:54,884 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 17:26:54,885 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 17:26:54,887 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 17:26:54,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 17:26:54,888 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 17:26:54,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 17:26:54,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 17:26:54,889 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 17:26:54,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 17:26:54,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 17:26:54,889 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 17:26:54,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 17:26:54,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 17:26:54,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 17:26:54,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 17:26:54,891 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 17:26:54,891 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 17:26:54,891 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 17:26:54,891 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 17:26:54,891 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 17:26:54,892 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 17:26:54,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 17:26:54,892 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 17:26:54,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 17:26:54,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 17:26:54,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 17:26:54,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 17:26:54,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 17:26:54,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 17:26:54,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 17:26:54,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 17:26:54,894 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 17:26:54,894 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 17:26:54,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 17:26:54,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 17:26:54,895 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 17:26:54,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 17:26:54,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 17:26:54,895 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 17:26:54,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 17:26:55,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 17:26:55,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 17:26:55,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 17:26:55,138 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 17:26:55,138 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 17:26:55,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-96.i [2023-12-24 17:26:56,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 17:26:56,426 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 17:26:56,427 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-96.i [2023-12-24 17:26:56,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf7b3de56/cd6a83d302654250afd7398a94f1d5e1/FLAG717fa8784 [2023-12-24 17:26:56,445 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf7b3de56/cd6a83d302654250afd7398a94f1d5e1 [2023-12-24 17:26:56,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 17:26:56,448 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 17:26:56,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 17:26:56,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 17:26:56,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 17:26:56,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1705d92b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56, skipping insertion in model container [2023-12-24 17:26:56,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,486 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 17:26:56,599 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-96.i[916,929] [2023-12-24 17:26:56,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 17:26:56,700 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 17:26:56,710 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-96.i[916,929] [2023-12-24 17:26:56,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 17:26:56,773 INFO L206 MainTranslator]: Completed translation [2023-12-24 17:26:56,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56 WrapperNode [2023-12-24 17:26:56,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 17:26:56,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 17:26:56,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 17:26:56,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 17:26:56,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,830 INFO L138 Inliner]: procedures = 39, calls = 169, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 519 [2023-12-24 17:26:56,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 17:26:56,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 17:26:56,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 17:26:56,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 17:26:56,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,893 INFO L175 MemorySlicer]: Split 127 memory accesses to 16 slices as follows [2, 15, 6, 14, 12, 6, 8, 6, 6, 5, 10, 10, 15, 3, 3, 6]. 12 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 18 writes are split as follows [0, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1]. [2023-12-24 17:26:56,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,945 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,983 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 17:26:56,984 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 17:26:56,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 17:26:56,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 17:26:56,985 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (1/1) ... [2023-12-24 17:26:56,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 17:26:56,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 17:26:57,013 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 17:26:57,038 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 17:26:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 17:26:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 17:26:57,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 17:26:57,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 17:26:57,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 17:26:57,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 17:26:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 17:26:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 17:26:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2023-12-24 17:26:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#8 [2023-12-24 17:26:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#9 [2023-12-24 17:26:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#10 [2023-12-24 17:26:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#11 [2023-12-24 17:26:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#12 [2023-12-24 17:26:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#13 [2023-12-24 17:26:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#14 [2023-12-24 17:26:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#15 [2023-12-24 17:26:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 17:26:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 17:26:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 17:26:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 17:26:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 17:26:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 17:26:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 17:26:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2023-12-24 17:26:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#8 [2023-12-24 17:26:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#9 [2023-12-24 17:26:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#10 [2023-12-24 17:26:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#11 [2023-12-24 17:26:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#12 [2023-12-24 17:26:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#13 [2023-12-24 17:26:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#14 [2023-12-24 17:26:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#15 [2023-12-24 17:26:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 17:26:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 17:26:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 17:26:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 17:26:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 17:26:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 17:26:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 17:26:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 17:26:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 17:26:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 17:26:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 17:26:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 17:26:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#12 [2023-12-24 17:26:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#13 [2023-12-24 17:26:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#14 [2023-12-24 17:26:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#15 [2023-12-24 17:26:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 17:26:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 17:26:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 17:26:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 17:26:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 17:26:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 17:26:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 17:26:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 17:26:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 17:26:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 17:26:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-24 17:26:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2023-12-24 17:26:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#12 [2023-12-24 17:26:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#13 [2023-12-24 17:26:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#14 [2023-12-24 17:26:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#15 [2023-12-24 17:26:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 17:26:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 17:26:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 17:26:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 17:26:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 17:26:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 17:26:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 17:26:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 17:26:57,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 17:26:57,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 17:26:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 17:26:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 17:26:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2023-12-24 17:26:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#13 [2023-12-24 17:26:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#14 [2023-12-24 17:26:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#15 [2023-12-24 17:26:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 17:26:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 17:26:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 17:26:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 17:26:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 17:26:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 17:26:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 17:26:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 17:26:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-24 17:26:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-24 17:26:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-24 17:26:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2023-12-24 17:26:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#12 [2023-12-24 17:26:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#13 [2023-12-24 17:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#14 [2023-12-24 17:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#15 [2023-12-24 17:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 17:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 17:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 17:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 17:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 17:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 17:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 17:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-24 17:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2023-12-24 17:26:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2023-12-24 17:26:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2023-12-24 17:26:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#11 [2023-12-24 17:26:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#12 [2023-12-24 17:26:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#13 [2023-12-24 17:26:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#14 [2023-12-24 17:26:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#15 [2023-12-24 17:26:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 17:26:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 17:26:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 17:26:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 17:26:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 17:26:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 17:26:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 17:26:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2023-12-24 17:26:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#8 [2023-12-24 17:26:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#9 [2023-12-24 17:26:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#10 [2023-12-24 17:26:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#11 [2023-12-24 17:26:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#12 [2023-12-24 17:26:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#13 [2023-12-24 17:26:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#14 [2023-12-24 17:26:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#15 [2023-12-24 17:26:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 17:26:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 17:26:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 17:26:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 17:26:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 17:26:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 17:26:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 17:26:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 17:26:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-24 17:26:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-24 17:26:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-24 17:26:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2023-12-24 17:26:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#12 [2023-12-24 17:26:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#13 [2023-12-24 17:26:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#14 [2023-12-24 17:26:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#15 [2023-12-24 17:26:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 17:26:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 17:26:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 17:26:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 17:26:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 17:26:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 17:26:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 17:26:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 17:26:57,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 17:26:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 17:26:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-24 17:26:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2023-12-24 17:26:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#12 [2023-12-24 17:26:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#13 [2023-12-24 17:26:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#14 [2023-12-24 17:26:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#15 [2023-12-24 17:26:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 17:26:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#11 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#12 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#13 [2023-12-24 17:26:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#14 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#15 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2023-12-24 17:26:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2023-12-24 17:26:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#11 [2023-12-24 17:26:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#12 [2023-12-24 17:26:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#13 [2023-12-24 17:26:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#14 [2023-12-24 17:26:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#15 [2023-12-24 17:26:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 17:26:57,090 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 17:26:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 17:26:57,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 17:26:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 17:26:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 17:26:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 17:26:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 17:26:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 17:26:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 17:26:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 17:26:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 17:26:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 17:26:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 17:26:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 17:26:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 17:26:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#12 [2023-12-24 17:26:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#13 [2023-12-24 17:26:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#14 [2023-12-24 17:26:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#15 [2023-12-24 17:26:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 17:26:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 17:26:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 17:26:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 17:26:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#12 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#13 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#14 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#15 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 17:26:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#12 [2023-12-24 17:26:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#13 [2023-12-24 17:26:57,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#14 [2023-12-24 17:26:57,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#15 [2023-12-24 17:26:57,372 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 17:26:57,374 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 17:26:58,803 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 17:26:58,847 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 17:26:58,848 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 17:26:58,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:26:58 BoogieIcfgContainer [2023-12-24 17:26:58,848 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 17:26:58,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 17:26:58,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 17:26:58,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 17:26:58,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 05:26:56" (1/3) ... [2023-12-24 17:26:58,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5217ed4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:26:58, skipping insertion in model container [2023-12-24 17:26:58,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:26:56" (2/3) ... [2023-12-24 17:26:58,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5217ed4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:26:58, skipping insertion in model container [2023-12-24 17:26:58,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:26:58" (3/3) ... [2023-12-24 17:26:58,855 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-96.i [2023-12-24 17:26:58,868 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 17:26:58,868 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 17:26:58,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 17:26:58,910 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;@5e17ddfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 17:26:58,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 17:26:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 83 states have internal predecessors, (120), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 17:26:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 17:26:58,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:26:58,927 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:26:58,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:26:58,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:26:58,932 INFO L85 PathProgramCache]: Analyzing trace with hash 849693687, now seen corresponding path program 1 times [2023-12-24 17:26:58,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:26:58,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792986739] [2023-12-24 17:26:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:26:58,943 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 17:26:58,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:26:58,948 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 17:26:58,994 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 17:26:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:26:59,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 17:26:59,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:26:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-24 17:26:59,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:26:59,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:26:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792986739] [2023-12-24 17:26:59,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792986739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:26:59,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:26:59,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 17:26:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873325571] [2023-12-24 17:26:59,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:26:59,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 17:26:59,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:26:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 17:26:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 17:26:59,524 INFO L87 Difference]: Start difference. First operand has 101 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 83 states have internal predecessors, (120), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 17:26:59,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:26:59,580 INFO L93 Difference]: Finished difference Result 199 states and 318 transitions. [2023-12-24 17:26:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 17:26:59,582 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2023-12-24 17:26:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:26:59,587 INFO L225 Difference]: With dead ends: 199 [2023-12-24 17:26:59,587 INFO L226 Difference]: Without dead ends: 99 [2023-12-24 17:26:59,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 125 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 17:26:59,593 INFO L413 NwaCegarLoop]: 143 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, 143 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 17:26:59,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:26:59,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-24 17:26:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-12-24 17:26:59,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 81 states have internal predecessors, (115), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 17:26:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 147 transitions. [2023-12-24 17:26:59,624 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 147 transitions. Word has length 126 [2023-12-24 17:26:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:26:59,625 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 147 transitions. [2023-12-24 17:26:59,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 17:26:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 147 transitions. [2023-12-24 17:26:59,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 17:26:59,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:26:59,629 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:26:59,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 17:26:59,832 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 17:26:59,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:26:59,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:26:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1500967013, now seen corresponding path program 1 times [2023-12-24 17:26:59,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:26:59,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568407958] [2023-12-24 17:26:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:26:59,834 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 17:26:59,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:26:59,836 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 17:26:59,852 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 17:27:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:00,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:27:00,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:00,308 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 9 treesize of output 5 [2023-12-24 17:27:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:27:00,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:27:00,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:27:00,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568407958] [2023-12-24 17:27:00,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568407958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:27:00,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:27:00,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 17:27:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929564262] [2023-12-24 17:27:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:27:00,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 17:27:00,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:27:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 17:27:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:27:00,347 INFO L87 Difference]: Start difference. First operand 99 states and 147 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:00,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:27:00,441 INFO L93 Difference]: Finished difference Result 197 states and 293 transitions. [2023-12-24 17:27:00,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 17:27:00,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2023-12-24 17:27:00,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:27:00,443 INFO L225 Difference]: With dead ends: 197 [2023-12-24 17:27:00,443 INFO L226 Difference]: Without dead ends: 99 [2023-12-24 17:27:00,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:27:00,445 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 2 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:27:00,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:27:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-24 17:27:00,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-12-24 17:27:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 81 states have internal predecessors, (114), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 17:27:00,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 146 transitions. [2023-12-24 17:27:00,457 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 146 transitions. Word has length 126 [2023-12-24 17:27:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:27:00,458 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 146 transitions. [2023-12-24 17:27:00,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 146 transitions. [2023-12-24 17:27:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 17:27:00,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:27:00,460 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:27:00,472 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 17:27:00,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:27:00,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:27:00,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:27:00,669 INFO L85 PathProgramCache]: Analyzing trace with hash 799855577, now seen corresponding path program 1 times [2023-12-24 17:27:00,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:27:00,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758037752] [2023-12-24 17:27:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:27:00,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:27:00,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:27:00,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:27:00,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 17:27:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:01,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 17:27:01,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:27:01,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:27:01,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:27:01,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758037752] [2023-12-24 17:27:01,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758037752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:27:01,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:27:01,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:27:01,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541541002] [2023-12-24 17:27:01,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:27:01,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:27:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:27:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:27:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:27:01,147 INFO L87 Difference]: Start difference. First operand 99 states and 146 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:27:01,302 INFO L93 Difference]: Finished difference Result 218 states and 321 transitions. [2023-12-24 17:27:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:27:01,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2023-12-24 17:27:01,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:27:01,304 INFO L225 Difference]: With dead ends: 218 [2023-12-24 17:27:01,304 INFO L226 Difference]: Without dead ends: 120 [2023-12-24 17:27:01,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 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 17:27:01,306 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 46 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:27:01,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 546 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:27:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-24 17:27:01,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 103. [2023-12-24 17:27:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 85 states have (on average 1.388235294117647) internal successors, (118), 85 states have internal predecessors, (118), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 17:27:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 150 transitions. [2023-12-24 17:27:01,317 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 150 transitions. Word has length 126 [2023-12-24 17:27:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:27:01,317 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 150 transitions. [2023-12-24 17:27:01,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:01,318 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 150 transitions. [2023-12-24 17:27:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 17:27:01,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:27:01,319 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:27:01,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 17:27:01,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:27:01,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:27:01,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:27:01,521 INFO L85 PathProgramCache]: Analyzing trace with hash -9491049, now seen corresponding path program 1 times [2023-12-24 17:27:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:27:01,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54772740] [2023-12-24 17:27:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:27:01,522 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 17:27:01,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:27:01,523 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 17:27:01,528 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 17:27:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:01,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:27:01,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:27:01,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:27:01,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:27:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54772740] [2023-12-24 17:27:01,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54772740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:27:01,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:27:01,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:27:01,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795395398] [2023-12-24 17:27:01,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:27:01,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:27:01,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:27:01,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:27:01,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:27:01,993 INFO L87 Difference]: Start difference. First operand 103 states and 150 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:02,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:27:02,216 INFO L93 Difference]: Finished difference Result 225 states and 326 transitions. [2023-12-24 17:27:02,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 17:27:02,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2023-12-24 17:27:02,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:27:02,219 INFO L225 Difference]: With dead ends: 225 [2023-12-24 17:27:02,219 INFO L226 Difference]: Without dead ends: 123 [2023-12-24 17:27:02,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:27:02,221 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 49 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:27:02,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 676 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:27:02,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-24 17:27:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2023-12-24 17:27:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 87 states have (on average 1.3793103448275863) internal successors, (120), 87 states have internal predecessors, (120), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 17:27:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 152 transitions. [2023-12-24 17:27:02,229 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 152 transitions. Word has length 126 [2023-12-24 17:27:02,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:27:02,229 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 152 transitions. [2023-12-24 17:27:02,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 152 transitions. [2023-12-24 17:27:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 17:27:02,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:27:02,231 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:27:02,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 17:27:02,440 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 17:27:02,440 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:27:02,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:27:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash 47767253, now seen corresponding path program 1 times [2023-12-24 17:27:02,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:27:02,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743989289] [2023-12-24 17:27:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:27:02,442 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 17:27:02,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:27:02,443 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 17:27:02,447 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 17:27:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:02,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:27:02,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:27:02,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:27:02,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:27:02,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743989289] [2023-12-24 17:27:02,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743989289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:27:02,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:27:02,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 17:27:02,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408652323] [2023-12-24 17:27:02,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:27:02,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:27:02,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:27:02,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:27:02,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:27:02,856 INFO L87 Difference]: Start difference. First operand 105 states and 152 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:27:03,136 INFO L93 Difference]: Finished difference Result 228 states and 326 transitions. [2023-12-24 17:27:03,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 17:27:03,144 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2023-12-24 17:27:03,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:27:03,146 INFO L225 Difference]: With dead ends: 228 [2023-12-24 17:27:03,147 INFO L226 Difference]: Without dead ends: 124 [2023-12-24 17:27:03,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:27:03,149 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 40 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:27:03,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 800 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:27:03,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-24 17:27:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2023-12-24 17:27:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 89 states have (on average 1.3707865168539326) internal successors, (122), 89 states have internal predecessors, (122), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 17:27:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 154 transitions. [2023-12-24 17:27:03,156 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 154 transitions. Word has length 126 [2023-12-24 17:27:03,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:27:03,157 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 154 transitions. [2023-12-24 17:27:03,157 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 154 transitions. [2023-12-24 17:27:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 17:27:03,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:27:03,159 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:27:03,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 17:27:03,368 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 17:27:03,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:27:03,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:27:03,369 INFO L85 PathProgramCache]: Analyzing trace with hash 47826835, now seen corresponding path program 1 times [2023-12-24 17:27:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:27:03,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972862675] [2023-12-24 17:27:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:27:03,370 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 17:27:03,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:27:03,371 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 17:27:03,399 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 17:27:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:03,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 17:27:03,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:04,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:27:04,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-24 17:27:04,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 17:27:04,201 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-24 17:27:04,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:27:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:27:04,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:27:04,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972862675] [2023-12-24 17:27:04,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972862675] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:27:04,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:27:04,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-12-24 17:27:04,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776996951] [2023-12-24 17:27:04,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:27:04,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:27:04,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:27:04,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:27:04,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:27:04,346 INFO L87 Difference]: Start difference. First operand 107 states and 154 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:04,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:27:04,696 INFO L93 Difference]: Finished difference Result 315 states and 450 transitions. [2023-12-24 17:27:04,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:27:04,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2023-12-24 17:27:04,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:27:04,698 INFO L225 Difference]: With dead ends: 315 [2023-12-24 17:27:04,698 INFO L226 Difference]: Without dead ends: 209 [2023-12-24 17:27:04,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:27:04,699 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 186 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:27:04,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 604 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 17:27:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-24 17:27:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 175. [2023-12-24 17:27:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 152 states have (on average 1.381578947368421) internal successors, (210), 153 states have internal predecessors, (210), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 17:27:04,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 250 transitions. [2023-12-24 17:27:04,710 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 250 transitions. Word has length 126 [2023-12-24 17:27:04,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:27:04,710 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 250 transitions. [2023-12-24 17:27:04,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 250 transitions. [2023-12-24 17:27:04,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 17:27:04,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:27:04,712 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:27:04,729 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 17:27:04,926 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 17:27:04,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:27:04,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:27:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash 208487640, now seen corresponding path program 1 times [2023-12-24 17:27:04,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:27:04,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714266733] [2023-12-24 17:27:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:27:04,928 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 17:27:04,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:27:04,929 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 17:27:04,930 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 17:27:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:05,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 17:27:05,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:05,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 17:27:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:27:05,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:27:05,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:27:05,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714266733] [2023-12-24 17:27:05,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714266733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:27:05,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:27:05,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 17:27:05,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98782776] [2023-12-24 17:27:05,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:27:05,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:27:05,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:27:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:27:05,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 17:27:05,597 INFO L87 Difference]: Start difference. First operand 175 states and 250 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:27:05,767 INFO L93 Difference]: Finished difference Result 507 states and 721 transitions. [2023-12-24 17:27:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 17:27:05,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 128 [2023-12-24 17:27:05,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:27:05,771 INFO L225 Difference]: With dead ends: 507 [2023-12-24 17:27:05,771 INFO L226 Difference]: Without dead ends: 333 [2023-12-24 17:27:05,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 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 17:27:05,772 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 235 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:27:05,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 406 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:27:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-24 17:27:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 293. [2023-12-24 17:27:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 248 states have (on average 1.3588709677419355) internal successors, (337), 250 states have internal predecessors, (337), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 17:27:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 417 transitions. [2023-12-24 17:27:05,790 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 417 transitions. Word has length 128 [2023-12-24 17:27:05,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:27:05,790 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 417 transitions. [2023-12-24 17:27:05,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:05,791 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 417 transitions. [2023-12-24 17:27:05,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 17:27:05,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:27:05,792 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:27:05,804 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 17:27:06,001 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 17:27:06,002 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:27:06,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:27:06,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1766052853, now seen corresponding path program 1 times [2023-12-24 17:27:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:27:06,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729576122] [2023-12-24 17:27:06,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:27:06,003 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 17:27:06,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:27:06,005 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 17:27:06,054 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 17:27:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:06,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 17:27:06,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:27:06,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:27:06,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:27:06,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729576122] [2023-12-24 17:27:06,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729576122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:27:06,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:27:06,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:27:06,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342970757] [2023-12-24 17:27:06,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:27:06,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:27:06,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:27:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:27:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:27:06,399 INFO L87 Difference]: Start difference. First operand 293 states and 417 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:27:06,508 INFO L93 Difference]: Finished difference Result 640 states and 908 transitions. [2023-12-24 17:27:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:27:06,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 128 [2023-12-24 17:27:06,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:27:06,511 INFO L225 Difference]: With dead ends: 640 [2023-12-24 17:27:06,511 INFO L226 Difference]: Without dead ends: 356 [2023-12-24 17:27:06,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 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 17:27:06,512 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 79 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:27:06,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 536 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:27:06,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-12-24 17:27:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 302. [2023-12-24 17:27:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 257 states have (on average 1.3463035019455254) internal successors, (346), 259 states have internal predecessors, (346), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 17:27:06,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 426 transitions. [2023-12-24 17:27:06,526 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 426 transitions. Word has length 128 [2023-12-24 17:27:06,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:27:06,527 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 426 transitions. [2023-12-24 17:27:06,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:06,527 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 426 transitions. [2023-12-24 17:27:06,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 17:27:06,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:27:06,528 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:27:06,547 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 17:27:06,737 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 17:27:06,738 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:27:06,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:27:06,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1756314290, now seen corresponding path program 1 times [2023-12-24 17:27:06,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:27:06,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050861310] [2023-12-24 17:27:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:27:06,739 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 17:27:06,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:27:06,740 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 17:27:06,741 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 17:27:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:07,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 17:27:07,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 14 proven. 102 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 17:27:07,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:27:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:27:07,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:27:07,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050861310] [2023-12-24 17:27:07,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050861310] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:27:07,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:27:07,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 17:27:07,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878582960] [2023-12-24 17:27:07,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:27:07,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:27:07,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:27:07,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:27:07,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:27:07,778 INFO L87 Difference]: Start difference. First operand 302 states and 426 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:07,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:27:07,902 INFO L93 Difference]: Finished difference Result 780 states and 1086 transitions. [2023-12-24 17:27:07,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:27:07,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 131 [2023-12-24 17:27:07,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:27:07,905 INFO L225 Difference]: With dead ends: 780 [2023-12-24 17:27:07,905 INFO L226 Difference]: Without dead ends: 487 [2023-12-24 17:27:07,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:27:07,906 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 96 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:27:07,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 568 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:27:07,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-24 17:27:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 341. [2023-12-24 17:27:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 296 states have (on average 1.3513513513513513) internal successors, (400), 298 states have internal predecessors, (400), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 17:27:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 480 transitions. [2023-12-24 17:27:07,926 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 480 transitions. Word has length 131 [2023-12-24 17:27:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:27:07,929 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 480 transitions. [2023-12-24 17:27:07,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 480 transitions. [2023-12-24 17:27:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 17:27:07,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:27:07,930 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:27:07,947 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 17:27:08,139 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 17:27:08,140 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:27:08,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:27:08,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1739785678, now seen corresponding path program 1 times [2023-12-24 17:27:08,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:27:08,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449289898] [2023-12-24 17:27:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:27:08,141 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 17:27:08,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:27:08,142 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 17:27:08,144 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 17:27:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:08,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:27:08,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:08,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:27:08,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 17:27:08,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 17:27:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:27:08,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:27:08,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:27:08,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449289898] [2023-12-24 17:27:08,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449289898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:27:08,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:27:08,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:27:08,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159230637] [2023-12-24 17:27:08,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:27:08,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:27:08,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:27:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:27:08,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 17:27:08,635 INFO L87 Difference]: Start difference. First operand 341 states and 480 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:27:08,908 INFO L93 Difference]: Finished difference Result 738 states and 1034 transitions. [2023-12-24 17:27:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 17:27:08,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 132 [2023-12-24 17:27:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:27:08,918 INFO L225 Difference]: With dead ends: 738 [2023-12-24 17:27:08,918 INFO L226 Difference]: Without dead ends: 406 [2023-12-24 17:27:08,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:27:08,919 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 159 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:27:08,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 493 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:27:08,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-12-24 17:27:08,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 379. [2023-12-24 17:27:08,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 321 states have (on average 1.3333333333333333) internal successors, (428), 323 states have internal predecessors, (428), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 17:27:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 532 transitions. [2023-12-24 17:27:08,941 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 532 transitions. Word has length 132 [2023-12-24 17:27:08,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:27:08,941 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 532 transitions. [2023-12-24 17:27:08,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 532 transitions. [2023-12-24 17:27:08,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 17:27:08,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:27:08,943 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:27:08,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 17:27:09,155 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 17:27:09,155 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:27:09,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:27:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1968375604, now seen corresponding path program 1 times [2023-12-24 17:27:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:27:09,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408932515] [2023-12-24 17:27:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:27:09,157 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 17:27:09,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:27:09,158 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 17:27:09,159 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 17:27:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:09,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 17:27:09,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:10,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:27:10,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2023-12-24 17:27:10,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 17:27:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-12-24 17:27:10,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:27:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:27:10,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:27:10,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408932515] [2023-12-24 17:27:10,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408932515] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:27:10,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:27:10,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-12-24 17:27:10,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946635252] [2023-12-24 17:27:10,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:27:10,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:27:10,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:27:10,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:27:10,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:27:10,476 INFO L87 Difference]: Start difference. First operand 379 states and 532 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:10,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:27:10,633 INFO L93 Difference]: Finished difference Result 395 states and 548 transitions. [2023-12-24 17:27:10,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:27:10,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 132 [2023-12-24 17:27:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:27:10,636 INFO L225 Difference]: With dead ends: 395 [2023-12-24 17:27:10,636 INFO L226 Difference]: Without dead ends: 393 [2023-12-24 17:27:10,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:27:10,637 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 102 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:27:10,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 673 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:27:10,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-24 17:27:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2023-12-24 17:27:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 333 states have (on average 1.3213213213213213) internal successors, (440), 335 states have internal predecessors, (440), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 17:27:10,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 544 transitions. [2023-12-24 17:27:10,660 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 544 transitions. Word has length 132 [2023-12-24 17:27:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:27:10,660 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 544 transitions. [2023-12-24 17:27:10,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:27:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 544 transitions. [2023-12-24 17:27:10,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 17:27:10,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:27:10,670 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:27:10,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 17:27:10,880 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 17:27:10,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:27:10,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:27:10,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1968435186, now seen corresponding path program 1 times [2023-12-24 17:27:10,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:27:10,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456865446] [2023-12-24 17:27:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:27:10,881 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 17:27:10,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:27:10,882 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 17:27:10,883 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 17:27:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:11,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:27:11,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:13,755 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 17:27:25,732 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 185 treesize of output 149 [2023-12-24 17:27:25,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:27:25,770 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 237 treesize of output 117 [2023-12-24 17:27:26,345 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 17:27:26,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:27:35,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:27:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456865446] [2023-12-24 17:27:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456865446] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:27:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1514505276] [2023-12-24 17:27:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:27:35,500 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:27:35,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:27:35,541 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:27:35,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-24 17:27:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:27:36,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 17:27:36,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:27:38,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 8 [2023-12-24 17:27:41,807 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 17:27:57,715 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 185 treesize of output 149 [2023-12-24 17:27:57,719 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 245 treesize of output 121 [2023-12-24 17:27:58,616 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 17:27:58,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:28:07,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1514505276] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:28:07,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:28:07,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-24 17:28:07,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352618580] [2023-12-24 17:28:07,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:28:07,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 17:28:07,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:28:07,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 17:28:07,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:28:07,239 INFO L87 Difference]: Start difference. First operand 393 states and 544 transitions. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 4 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-24 17:28:24,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:28:30,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:28:35,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:28:36,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:28:43,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:28:48,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:28:52,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:28:56,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:29:03,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:29:07,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:29:07,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:29:07,646 INFO L93 Difference]: Finished difference Result 1125 states and 1541 transitions. [2023-12-24 17:29:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 17:29:07,661 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 4 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 132 [2023-12-24 17:29:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:29:07,665 INFO L225 Difference]: With dead ends: 1125 [2023-12-24 17:29:07,665 INFO L226 Difference]: Without dead ends: 779 [2023-12-24 17:29:07,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2023-12-24 17:29:07,667 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 354 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 64 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:29:07,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1231 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 555 Invalid, 8 Unknown, 0 Unchecked, 53.5s Time] [2023-12-24 17:29:07,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-12-24 17:29:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 763. [2023-12-24 17:29:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 652 states have (on average 1.3144171779141105) internal successors, (857), 658 states have internal predecessors, (857), 92 states have call successors, (92), 18 states have call predecessors, (92), 18 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 17:29:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1041 transitions. [2023-12-24 17:29:07,723 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1041 transitions. Word has length 132 [2023-12-24 17:29:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:29:07,724 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 1041 transitions. [2023-12-24 17:29:07,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 4 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-24 17:29:07,724 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1041 transitions. [2023-12-24 17:29:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 17:29:07,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:29:07,727 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:29:07,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-24 17:29:07,947 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 17:29:08,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 17:29:08,139 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:29:08,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:29:08,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2025693488, now seen corresponding path program 1 times [2023-12-24 17:29:08,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:29:08,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252471478] [2023-12-24 17:29:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:29:08,141 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 17:29:08,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:29:08,142 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 17:29:08,144 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 17:29:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:29:08,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 17:29:08,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:29:08,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:29:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:29:08,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:29:08,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:29:08,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252471478] [2023-12-24 17:29:08,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252471478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:29:08,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:29:08,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:29:08,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049976551] [2023-12-24 17:29:08,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:29:08,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:29:08,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:29:08,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:29:08,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:29:08,672 INFO L87 Difference]: Start difference. First operand 763 states and 1041 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:29:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:29:09,204 INFO L93 Difference]: Finished difference Result 1468 states and 1996 transitions. [2023-12-24 17:29:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:29:09,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 132 [2023-12-24 17:29:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:29:09,209 INFO L225 Difference]: With dead ends: 1468 [2023-12-24 17:29:09,209 INFO L226 Difference]: Without dead ends: 770 [2023-12-24 17:29:09,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:29:09,211 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 121 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:29:09,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 645 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 17:29:09,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2023-12-24 17:29:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 763. [2023-12-24 17:29:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 652 states have (on average 1.3052147239263803) internal successors, (851), 658 states have internal predecessors, (851), 92 states have call successors, (92), 18 states have call predecessors, (92), 18 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 17:29:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1035 transitions. [2023-12-24 17:29:09,260 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1035 transitions. Word has length 132 [2023-12-24 17:29:09,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:29:09,260 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 1035 transitions. [2023-12-24 17:29:09,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:29:09,260 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1035 transitions. [2023-12-24 17:29:09,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 17:29:09,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:29:09,262 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:29:09,275 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 17:29:09,472 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 17:29:09,472 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:29:09,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:29:09,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1216346862, now seen corresponding path program 1 times [2023-12-24 17:29:09,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:29:09,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471611077] [2023-12-24 17:29:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:29:09,475 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 17:29:09,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:29:09,477 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 17:29:09,480 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 17:29:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:29:09,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 17:29:09,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:29:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:29:09,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:29:09,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:29:09,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471611077] [2023-12-24 17:29:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471611077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:29:09,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:29:09,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:29:09,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591807502] [2023-12-24 17:29:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:29:09,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:29:09,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:29:09,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:29:09,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:29:09,888 INFO L87 Difference]: Start difference. First operand 763 states and 1035 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:29:10,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:29:10,075 INFO L93 Difference]: Finished difference Result 1512 states and 2037 transitions. [2023-12-24 17:29:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:29:10,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 132 [2023-12-24 17:29:10,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:29:10,080 INFO L225 Difference]: With dead ends: 1512 [2023-12-24 17:29:10,080 INFO L226 Difference]: Without dead ends: 814 [2023-12-24 17:29:10,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:29:10,082 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 24 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:29:10,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 538 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:29:10,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2023-12-24 17:29:10,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 781. [2023-12-24 17:29:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 670 states have (on average 1.2970149253731342) internal successors, (869), 676 states have internal predecessors, (869), 92 states have call successors, (92), 18 states have call predecessors, (92), 18 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 17:29:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1053 transitions. [2023-12-24 17:29:10,159 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1053 transitions. Word has length 132 [2023-12-24 17:29:10,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:29:10,159 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1053 transitions. [2023-12-24 17:29:10,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:29:10,159 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1053 transitions. [2023-12-24 17:29:10,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 17:29:10,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:29:10,161 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:29:10,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 17:29:10,361 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 17:29:10,361 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:29:10,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:29:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1892803024, now seen corresponding path program 1 times [2023-12-24 17:29:10,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:29:10,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034579931] [2023-12-24 17:29:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:29:10,363 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 17:29:10,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:29:10,364 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 17:29:10,368 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 17:29:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:29:10,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 17:29:10,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:29:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 17:29:10,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:29:10,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:29:10,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034579931] [2023-12-24 17:29:10,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034579931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:29:10,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:29:10,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:29:10,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534063925] [2023-12-24 17:29:10,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:29:10,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:29:10,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:29:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:29:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 17:29:10,810 INFO L87 Difference]: Start difference. First operand 781 states and 1053 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 17:29:10,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:29:10,982 INFO L93 Difference]: Finished difference Result 1525 states and 2053 transitions. [2023-12-24 17:29:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:29:10,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 132 [2023-12-24 17:29:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:29:10,986 INFO L225 Difference]: With dead ends: 1525 [2023-12-24 17:29:10,986 INFO L226 Difference]: Without dead ends: 793 [2023-12-24 17:29:10,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 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 17:29:10,992 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 7 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:29:10,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 420 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:29:10,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-12-24 17:29:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 781. [2023-12-24 17:29:11,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 670 states have (on average 1.2925373134328357) internal successors, (866), 676 states have internal predecessors, (866), 92 states have call successors, (92), 18 states have call predecessors, (92), 18 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 17:29:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1050 transitions. [2023-12-24 17:29:11,043 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1050 transitions. Word has length 132 [2023-12-24 17:29:11,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:29:11,043 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1050 transitions. [2023-12-24 17:29:11,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 17:29:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1050 transitions. [2023-12-24 17:29:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 17:29:11,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:29:11,045 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:29:11,056 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 17:29:11,256 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 17:29:11,256 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:29:11,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:29:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash 815138060, now seen corresponding path program 1 times [2023-12-24 17:29:11,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:29:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750721961] [2023-12-24 17:29:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:29:11,257 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 17:29:11,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:29:11,258 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 17:29:11,260 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 17:29:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:29:11,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 17:29:11,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:29:11,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 17:29:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:29:11,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:29:11,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:29:11,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750721961] [2023-12-24 17:29:11,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750721961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:29:11,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:29:11,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:29:11,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648473646] [2023-12-24 17:29:11,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:29:11,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:29:11,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:29:11,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:29:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:29:11,983 INFO L87 Difference]: Start difference. First operand 781 states and 1050 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:29:12,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:29:12,257 INFO L93 Difference]: Finished difference Result 1591 states and 2125 transitions. [2023-12-24 17:29:12,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:29:12,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 133 [2023-12-24 17:29:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:29:12,261 INFO L225 Difference]: With dead ends: 1591 [2023-12-24 17:29:12,261 INFO L226 Difference]: Without dead ends: 875 [2023-12-24 17:29:12,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:29:12,263 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 231 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:29:12,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 530 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:29:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-24 17:29:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 783. [2023-12-24 17:29:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 672 states have (on average 1.2916666666666667) internal successors, (868), 678 states have internal predecessors, (868), 92 states have call successors, (92), 18 states have call predecessors, (92), 18 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 17:29:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1052 transitions. [2023-12-24 17:29:12,313 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1052 transitions. Word has length 133 [2023-12-24 17:29:12,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:29:12,313 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 1052 transitions. [2023-12-24 17:29:12,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:29:12,313 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1052 transitions. [2023-12-24 17:29:12,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 17:29:12,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:29:12,315 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:29:12,324 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 17:29:12,524 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 17:29:12,525 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:29:12,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:29:12,525 INFO L85 PathProgramCache]: Analyzing trace with hash 877177674, now seen corresponding path program 1 times [2023-12-24 17:29:12,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:29:12,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403922249] [2023-12-24 17:29:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:29:12,526 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 17:29:12,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:29:12,527 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 17:29:12,529 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 17:29:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:29:12,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 17:29:12,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:29:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 8 proven. 276 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-24 17:29:14,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:29:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:29:14,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:29:14,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403922249] [2023-12-24 17:29:14,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403922249] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:29:14,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:29:14,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2023-12-24 17:29:14,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851848527] [2023-12-24 17:29:14,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:29:14,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:29:14,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:29:14,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:29:14,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:29:14,357 INFO L87 Difference]: Start difference. First operand 783 states and 1052 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:29:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:29:14,651 INFO L93 Difference]: Finished difference Result 2169 states and 2843 transitions. [2023-12-24 17:29:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:29:14,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 133 [2023-12-24 17:29:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:29:14,657 INFO L225 Difference]: With dead ends: 2169 [2023-12-24 17:29:14,657 INFO L226 Difference]: Without dead ends: 1451 [2023-12-24 17:29:14,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-24 17:29:14,660 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 147 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:29:14,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 806 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:29:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2023-12-24 17:29:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1193. [2023-12-24 17:29:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1038 states have (on average 1.264932562620424) internal successors, (1313), 1050 states have internal predecessors, (1313), 124 states have call successors, (124), 30 states have call predecessors, (124), 30 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:29:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1561 transitions. [2023-12-24 17:29:14,731 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1561 transitions. Word has length 133 [2023-12-24 17:29:14,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:29:14,731 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1561 transitions. [2023-12-24 17:29:14,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:29:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1561 transitions. [2023-12-24 17:29:14,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 17:29:14,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:29:14,734 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:29:14,743 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 17:29:14,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:29:14,944 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:29:14,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:29:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash -402686004, now seen corresponding path program 1 times [2023-12-24 17:29:14,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:29:14,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916013360] [2023-12-24 17:29:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:29:14,945 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 17:29:14,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:29:14,946 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:29:14,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 17:29:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:29:15,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:29:15,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:29:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:29:15,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:29:15,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:29:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916013360] [2023-12-24 17:29:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916013360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:29:15,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:29:15,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:29:15,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744489870] [2023-12-24 17:29:15,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:29:15,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:29:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:29:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:29:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:29:15,359 INFO L87 Difference]: Start difference. First operand 1193 states and 1561 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:29:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:29:15,641 INFO L93 Difference]: Finished difference Result 2657 states and 3434 transitions. [2023-12-24 17:29:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 17:29:15,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 133 [2023-12-24 17:29:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:29:15,647 INFO L225 Difference]: With dead ends: 2657 [2023-12-24 17:29:15,647 INFO L226 Difference]: Without dead ends: 1533 [2023-12-24 17:29:15,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:29:15,650 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 99 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:29:15,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 681 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:29:15,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2023-12-24 17:29:15,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1175. [2023-12-24 17:29:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1020 states have (on average 1.2637254901960784) internal successors, (1289), 1032 states have internal predecessors, (1289), 124 states have call successors, (124), 30 states have call predecessors, (124), 30 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:29:15,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1537 transitions. [2023-12-24 17:29:15,723 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1537 transitions. Word has length 133 [2023-12-24 17:29:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:29:15,723 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 1537 transitions. [2023-12-24 17:29:15,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:29:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1537 transitions. [2023-12-24 17:29:15,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 17:29:15,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:29:15,725 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:29:15,737 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 (20)] Ended with exit code 0 [2023-12-24 17:29:15,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:29:15,935 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:29:15,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:29:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1541339310, now seen corresponding path program 1 times [2023-12-24 17:29:15,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:29:15,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093738084] [2023-12-24 17:29:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:29:15,937 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 17:29:15,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:29:15,938 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 17:29:15,938 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 17:29:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:29:16,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:29:16,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:29:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 17:29:16,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:29:16,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:29:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093738084] [2023-12-24 17:29:16,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093738084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:29:16,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:29:16,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:29:16,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537434445] [2023-12-24 17:29:16,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:29:16,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:29:16,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:29:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:29:16,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:29:16,396 INFO L87 Difference]: Start difference. First operand 1175 states and 1537 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-24 17:29:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:29:16,916 INFO L93 Difference]: Finished difference Result 2342 states and 3048 transitions. [2023-12-24 17:29:16,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:29:16,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2023-12-24 17:29:16,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:29:16,922 INFO L225 Difference]: With dead ends: 2342 [2023-12-24 17:29:16,922 INFO L226 Difference]: Without dead ends: 1215 [2023-12-24 17:29:16,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:29:16,924 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 7 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:29:16,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 569 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 17:29:16,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-12-24 17:29:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1175. [2023-12-24 17:29:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1020 states have (on average 1.2607843137254902) internal successors, (1286), 1032 states have internal predecessors, (1286), 124 states have call successors, (124), 30 states have call predecessors, (124), 30 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:29:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1534 transitions. [2023-12-24 17:29:16,998 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1534 transitions. Word has length 134 [2023-12-24 17:29:16,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:29:16,998 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 1534 transitions. [2023-12-24 17:29:16,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-24 17:29:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1534 transitions. [2023-12-24 17:29:17,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 17:29:17,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:29:17,000 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:29:17,014 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 17:29:17,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:29:17,210 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:29:17,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:29:17,211 INFO L85 PathProgramCache]: Analyzing trace with hash 280422060, now seen corresponding path program 1 times [2023-12-24 17:29:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:29:17,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792881712] [2023-12-24 17:29:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:29:17,212 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 17:29:17,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:29:17,214 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:29:17,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 17:29:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:29:17,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 17:29:17,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:29:20,300 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 17:29:32,413 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 203 treesize of output 167 [2023-12-24 17:29:32,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:29:32,443 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 265 treesize of output 115 [2023-12-24 17:29:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 201 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-24 17:29:33,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:29:44,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:29:44,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792881712] [2023-12-24 17:29:44,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792881712] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:29:44,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1108247346] [2023-12-24 17:29:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:29:44,878 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:29:44,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:29:44,879 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:29:44,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-24 17:29:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:29:45,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 17:29:45,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:29:48,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 17:30:03,434 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 17:30:25,643 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 185 treesize of output 149 [2023-12-24 17:30:25,649 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 251 treesize of output 123 [2023-12-24 17:30:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 201 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-24 17:30:26,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:30:34,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1108247346] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:30:34,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:30:34,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2023-12-24 17:30:34,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461912119] [2023-12-24 17:30:34,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:30:34,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 17:30:34,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:30:34,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 17:30:34,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=499, Unknown=1, NotChecked=0, Total=600 [2023-12-24 17:30:34,382 INFO L87 Difference]: Start difference. First operand 1175 states and 1534 transitions. Second operand has 23 states, 21 states have (on average 5.761904761904762) internal successors, (121), 20 states have internal predecessors, (121), 6 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) [2023-12-24 17:30:56,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:00,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:10,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:13,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:20,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:25,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:29,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:33,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:37,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:42,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:46,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:50,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.75s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:53,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:54,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:58,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:32:04,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:32:08,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.57s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:32:14,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:32:19,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:32:23,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:32:25,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:25,256 INFO L93 Difference]: Finished difference Result 2351 states and 3033 transitions. [2023-12-24 17:32:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 17:32:25,257 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 5.761904761904762) internal successors, (121), 20 states have internal predecessors, (121), 6 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) Word has length 134 [2023-12-24 17:32:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:25,261 INFO L225 Difference]: With dead ends: 2351 [2023-12-24 17:32:25,262 INFO L226 Difference]: Without dead ends: 1245 [2023-12-24 17:32:25,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 304 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 42.2s TimeCoverageRelationStatistics Valid=355, Invalid=1284, Unknown=1, NotChecked=0, Total=1640 [2023-12-24 17:32:25,265 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 360 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 115 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:25,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2119 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1037 Invalid, 13 Unknown, 0 Unchecked, 94.4s Time] [2023-12-24 17:32:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-12-24 17:32:25,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1215. [2023-12-24 17:32:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1050 states have (on average 1.2476190476190476) internal successors, (1310), 1062 states have internal predecessors, (1310), 124 states have call successors, (124), 40 states have call predecessors, (124), 40 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:32:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1558 transitions. [2023-12-24 17:32:25,359 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1558 transitions. Word has length 134 [2023-12-24 17:32:25,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:25,359 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1558 transitions. [2023-12-24 17:32:25,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 5.761904761904762) internal successors, (121), 20 states have internal predecessors, (121), 6 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) [2023-12-24 17:32:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1558 transitions. [2023-12-24 17:32:25,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 17:32:25,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:25,361 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:25,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2023-12-24 17:32:25,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 17:32:25,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:32:25,775 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:25,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:25,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1310977927, now seen corresponding path program 1 times [2023-12-24 17:32:25,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:25,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914022673] [2023-12-24 17:32:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:25,779 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 17:32:25,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:25,781 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 17:32:25,791 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 17:32:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:26,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 17:32:26,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:26,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:32:26,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 17:32:26,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 17:32:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:32:26,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:32:26,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:26,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914022673] [2023-12-24 17:32:26,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914022673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:32:26,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:32:26,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:32:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953584504] [2023-12-24 17:32:26,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:32:26,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:32:26,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:32:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:32:26,471 INFO L87 Difference]: Start difference. First operand 1215 states and 1558 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:32:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:27,331 INFO L93 Difference]: Finished difference Result 2295 states and 2931 transitions. [2023-12-24 17:32:27,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:32:27,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 135 [2023-12-24 17:32:27,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:27,346 INFO L225 Difference]: With dead ends: 2295 [2023-12-24 17:32:27,347 INFO L226 Difference]: Without dead ends: 1153 [2023-12-24 17:32:27,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:32:27,350 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 145 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:27,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 571 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 17:32:27,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2023-12-24 17:32:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1119. [2023-12-24 17:32:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 954 states have (on average 1.2180293501048218) internal successors, (1162), 966 states have internal predecessors, (1162), 124 states have call successors, (124), 40 states have call predecessors, (124), 40 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:32:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1410 transitions. [2023-12-24 17:32:27,447 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1410 transitions. Word has length 135 [2023-12-24 17:32:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:27,461 INFO L495 AbstractCegarLoop]: Abstraction has 1119 states and 1410 transitions. [2023-12-24 17:32:27,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:32:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1410 transitions. [2023-12-24 17:32:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-24 17:32:27,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:27,462 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:27,475 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 (24)] Ended with exit code 0 [2023-12-24 17:32:27,675 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 17:32:27,676 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:27,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -791322284, now seen corresponding path program 1 times [2023-12-24 17:32:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:27,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129528388] [2023-12-24 17:32:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:27,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:32:27,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:27,678 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 17:32:27,679 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 17:32:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:28,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 17:32:28,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:29,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 17:32:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 8 proven. 276 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-24 17:32:29,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:32:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:32:29,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:29,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129528388] [2023-12-24 17:32:29,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129528388] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:32:29,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:32:29,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-12-24 17:32:29,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186666276] [2023-12-24 17:32:29,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:32:29,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:32:29,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:29,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:32:29,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-24 17:32:29,540 INFO L87 Difference]: Start difference. First operand 1119 states and 1410 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:32:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:29,909 INFO L93 Difference]: Finished difference Result 2277 states and 2831 transitions. [2023-12-24 17:32:29,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:32:29,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 136 [2023-12-24 17:32:29,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:29,916 INFO L225 Difference]: With dead ends: 2277 [2023-12-24 17:32:29,916 INFO L226 Difference]: Without dead ends: 1543 [2023-12-24 17:32:29,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:32:29,920 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 94 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:29,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 690 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:32:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-12-24 17:32:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1111. [2023-12-24 17:32:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 946 states have (on average 1.2071881606765327) internal successors, (1142), 958 states have internal predecessors, (1142), 124 states have call successors, (124), 40 states have call predecessors, (124), 40 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:32:30,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1390 transitions. [2023-12-24 17:32:30,022 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1390 transitions. Word has length 136 [2023-12-24 17:32:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:30,022 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1390 transitions. [2023-12-24 17:32:30,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:32:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1390 transitions. [2023-12-24 17:32:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 17:32:30,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:30,024 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:30,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 17:32:30,234 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 17:32:30,234 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:30,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:30,235 INFO L85 PathProgramCache]: Analyzing trace with hash 56368623, now seen corresponding path program 1 times [2023-12-24 17:32:30,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:30,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933430815] [2023-12-24 17:32:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:30,237 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 17:32:30,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:30,238 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 17:32:30,274 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 17:32:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:30,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 17:32:30,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:31,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 17:32:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 8 proven. 276 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-24 17:32:31,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:32:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:32:31,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:31,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933430815] [2023-12-24 17:32:31,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933430815] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:32:31,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:32:31,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-12-24 17:32:31,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808182197] [2023-12-24 17:32:31,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:32:31,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:32:31,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:31,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:32:31,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-24 17:32:31,996 INFO L87 Difference]: Start difference. First operand 1111 states and 1390 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:32:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:32,309 INFO L93 Difference]: Finished difference Result 2125 states and 2631 transitions. [2023-12-24 17:32:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:32:32,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2023-12-24 17:32:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:32,314 INFO L225 Difference]: With dead ends: 2125 [2023-12-24 17:32:32,314 INFO L226 Difference]: Without dead ends: 1431 [2023-12-24 17:32:32,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:32:32,316 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 163 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:32,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 590 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:32:32,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-12-24 17:32:32,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1111. [2023-12-24 17:32:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 946 states have (on average 1.2029598308668077) internal successors, (1138), 958 states have internal predecessors, (1138), 124 states have call successors, (124), 40 states have call predecessors, (124), 40 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:32:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1386 transitions. [2023-12-24 17:32:32,414 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1386 transitions. Word has length 138 [2023-12-24 17:32:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:32,415 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1386 transitions. [2023-12-24 17:32:32,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:32:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1386 transitions. [2023-12-24 17:32:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 17:32:32,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:32,416 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:32,427 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 (26)] Forceful destruction successful, exit code 0 [2023-12-24 17:32:32,625 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 17:32:32,625 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:32,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:32,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2019751082, now seen corresponding path program 1 times [2023-12-24 17:32:32,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:32,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963737973] [2023-12-24 17:32:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:32,626 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 17:32:32,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:32,627 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 17:32:32,628 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 17:32:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:32,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:32:32,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:33,718 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 17:32:33,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 17:32:33,914 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 17:32:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 270 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-24 17:32:34,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:32:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:32:35,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:35,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963737973] [2023-12-24 17:32:35,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963737973] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:32:35,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:32:35,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 23 [2023-12-24 17:32:35,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235595194] [2023-12-24 17:32:35,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:32:35,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:32:35,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:35,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:32:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2023-12-24 17:32:35,049 INFO L87 Difference]: Start difference. First operand 1111 states and 1386 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:32:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:37,583 INFO L93 Difference]: Finished difference Result 2537 states and 3096 transitions. [2023-12-24 17:32:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 17:32:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 140 [2023-12-24 17:32:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:37,589 INFO L225 Difference]: With dead ends: 2537 [2023-12-24 17:32:37,589 INFO L226 Difference]: Without dead ends: 1843 [2023-12-24 17:32:37,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=242, Invalid=1480, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 17:32:37,590 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 232 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:37,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1863 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 17:32:37,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-24 17:32:37,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1523. [2023-12-24 17:32:37,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1323 states have (on average 1.2116402116402116) internal successors, (1603), 1339 states have internal predecessors, (1603), 148 states have call successors, (148), 51 states have call predecessors, (148), 51 states have return successors, (148), 132 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-24 17:32:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1899 transitions. [2023-12-24 17:32:37,711 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1899 transitions. Word has length 140 [2023-12-24 17:32:37,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:37,711 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 1899 transitions. [2023-12-24 17:32:37,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:32:37,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1899 transitions. [2023-12-24 17:32:37,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 17:32:37,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:37,713 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:37,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 17:32:37,923 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 17:32:37,923 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:37,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:37,924 INFO L85 PathProgramCache]: Analyzing trace with hash 998682728, now seen corresponding path program 1 times [2023-12-24 17:32:37,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:37,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863559288] [2023-12-24 17:32:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:37,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:32:37,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:37,926 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 17:32:37,963 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 17:32:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:38,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 17:32:38,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:39,349 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 17:32:39,393 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 17:32:39,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 17:32:39,809 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 270 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-24 17:32:39,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:32:40,597 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 17:32:40,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2023-12-24 17:32:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 27 proven. 18 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 17:32:40,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:40,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863559288] [2023-12-24 17:32:40,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863559288] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 17:32:40,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:32:40,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2023-12-24 17:32:40,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168541880] [2023-12-24 17:32:40,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:32:40,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 17:32:40,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:40,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 17:32:40,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2023-12-24 17:32:40,822 INFO L87 Difference]: Start difference. First operand 1523 states and 1899 transitions. Second operand has 24 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 24 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-24 17:32:45,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:45,688 INFO L93 Difference]: Finished difference Result 2423 states and 2972 transitions. [2023-12-24 17:32:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-24 17:32:45,689 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 24 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) Word has length 140 [2023-12-24 17:32:45,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:45,692 INFO L225 Difference]: With dead ends: 2423 [2023-12-24 17:32:45,692 INFO L226 Difference]: Without dead ends: 1317 [2023-12-24 17:32:45,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 257 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=634, Invalid=3148, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 17:32:45,695 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 401 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:45,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 2792 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 17:32:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2023-12-24 17:32:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1123. [2023-12-24 17:32:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 951 states have (on average 1.1808622502628812) internal successors, (1123), 963 states have internal predecessors, (1123), 124 states have call successors, (124), 47 states have call predecessors, (124), 47 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:32:45,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1371 transitions. [2023-12-24 17:32:45,806 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1371 transitions. Word has length 140 [2023-12-24 17:32:45,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:45,807 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1371 transitions. [2023-12-24 17:32:45,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 24 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-24 17:32:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1371 transitions. [2023-12-24 17:32:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-24 17:32:45,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:45,811 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:45,824 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 17:32:46,021 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 17:32:46,021 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:46,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:46,021 INFO L85 PathProgramCache]: Analyzing trace with hash 998809984, now seen corresponding path program 1 times [2023-12-24 17:32:46,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:46,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735685150] [2023-12-24 17:32:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:46,022 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 17:32:46,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:46,023 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 17:32:46,024 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 17:32:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:46,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 17:32:46,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:47,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 17:32:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 1088 proven. 102 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2023-12-24 17:32:47,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:32:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1994 trivial. 0 not checked. [2023-12-24 17:32:47,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:47,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735685150] [2023-12-24 17:32:47,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735685150] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:32:47,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:32:47,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 17:32:47,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263547810] [2023-12-24 17:32:47,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:32:47,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:32:47,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:47,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:32:47,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:32:47,915 INFO L87 Difference]: Start difference. First operand 1123 states and 1371 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-24 17:32:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:48,115 INFO L93 Difference]: Finished difference Result 2171 states and 2643 transitions. [2023-12-24 17:32:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:32:48,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 264 [2023-12-24 17:32:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:48,119 INFO L225 Difference]: With dead ends: 2171 [2023-12-24 17:32:48,119 INFO L226 Difference]: Without dead ends: 1125 [2023-12-24 17:32:48,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:32:48,122 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 123 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:48,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 415 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:32:48,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2023-12-24 17:32:48,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1123. [2023-12-24 17:32:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 951 states have (on average 1.1703470031545742) internal successors, (1113), 963 states have internal predecessors, (1113), 124 states have call successors, (124), 47 states have call predecessors, (124), 47 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:32:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1361 transitions. [2023-12-24 17:32:48,243 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1361 transitions. Word has length 264 [2023-12-24 17:32:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:48,244 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1361 transitions. [2023-12-24 17:32:48,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-24 17:32:48,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1361 transitions. [2023-12-24 17:32:48,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-24 17:32:48,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:48,247 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:48,264 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 17:32:48,464 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 17:32:48,464 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:48,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:48,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1593437399, now seen corresponding path program 1 times [2023-12-24 17:32:48,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:48,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568138056] [2023-12-24 17:32:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:48,465 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 17:32:48,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:48,466 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 17:32:48,468 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 17:32:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:48,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 17:32:48,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:49,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 17:32:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 1074 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2023-12-24 17:32:49,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:32:49,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:49,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568138056] [2023-12-24 17:32:49,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568138056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:32:49,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:32:49,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:32:49,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453092127] [2023-12-24 17:32:49,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:32:49,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:32:49,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:49,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:32:49,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:32:49,564 INFO L87 Difference]: Start difference. First operand 1123 states and 1361 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-24 17:32:49,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:49,935 INFO L93 Difference]: Finished difference Result 1967 states and 2362 transitions. [2023-12-24 17:32:49,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:32:49,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 267 [2023-12-24 17:32:49,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:49,939 INFO L225 Difference]: With dead ends: 1967 [2023-12-24 17:32:49,939 INFO L226 Difference]: Without dead ends: 1277 [2023-12-24 17:32:49,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:32:49,941 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 183 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:49,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 531 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:32:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-12-24 17:32:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1133. [2023-12-24 17:32:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 961 states have (on average 1.1706555671175858) internal successors, (1125), 973 states have internal predecessors, (1125), 124 states have call successors, (124), 47 states have call predecessors, (124), 47 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:32:50,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1373 transitions. [2023-12-24 17:32:50,038 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1373 transitions. Word has length 267 [2023-12-24 17:32:50,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:50,039 INFO L495 AbstractCegarLoop]: Abstraction has 1133 states and 1373 transitions. [2023-12-24 17:32:50,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-24 17:32:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1373 transitions. [2023-12-24 17:32:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-24 17:32:50,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:50,042 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:50,056 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 17:32:50,256 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 17:32:50,256 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:50,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:50,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1378350951, now seen corresponding path program 1 times [2023-12-24 17:32:50,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:50,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147421292] [2023-12-24 17:32:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:50,258 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 17:32:50,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:50,259 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 17:32:50,259 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 (31)] Waiting until timeout for monitored process [2023-12-24 17:32:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:50,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 17:32:50,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 1082 proven. 276 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2023-12-24 17:32:52,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:32:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1994 trivial. 0 not checked. [2023-12-24 17:32:52,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:52,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147421292] [2023-12-24 17:32:52,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147421292] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:32:52,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:32:52,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2023-12-24 17:32:52,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86547159] [2023-12-24 17:32:52,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:32:52,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:32:52,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:52,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:32:52,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:32:52,359 INFO L87 Difference]: Start difference. First operand 1133 states and 1373 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-24 17:32:52,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:52,728 INFO L93 Difference]: Finished difference Result 2127 states and 2559 transitions. [2023-12-24 17:32:52,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:32:52,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 267 [2023-12-24 17:32:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:52,733 INFO L225 Difference]: With dead ends: 2127 [2023-12-24 17:32:52,734 INFO L226 Difference]: Without dead ends: 1403 [2023-12-24 17:32:52,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-24 17:32:52,736 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 110 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:52,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 684 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:32:52,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2023-12-24 17:32:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1159. [2023-12-24 17:32:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 987 states have (on average 1.1702127659574468) internal successors, (1155), 999 states have internal predecessors, (1155), 124 states have call successors, (124), 47 states have call predecessors, (124), 47 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:32:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1403 transitions. [2023-12-24 17:32:52,828 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1403 transitions. Word has length 267 [2023-12-24 17:32:52,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:52,829 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 1403 transitions. [2023-12-24 17:32:52,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-24 17:32:52,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1403 transitions. [2023-12-24 17:32:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-24 17:32:52,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:52,833 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:52,847 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 17:32:53,047 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 17:32:53,047 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:53,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash -979623806, now seen corresponding path program 1 times [2023-12-24 17:32:53,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:53,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134077750] [2023-12-24 17:32:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:53,048 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 17:32:53,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:53,049 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 17:32:53,050 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 17:32:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:53,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 17:32:53,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:54,858 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 17:32:55,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 17:32:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 12 proven. 1072 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2023-12-24 17:32:55,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:32:56,063 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 34 treesize of output 30 [2023-12-24 17:32:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-12-24 17:32:56,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:56,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134077750] [2023-12-24 17:32:56,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134077750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 17:32:56,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:32:56,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 7 [2023-12-24 17:32:56,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747199740] [2023-12-24 17:32:56,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:32:56,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:32:56,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:56,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:32:56,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:32:56,601 INFO L87 Difference]: Start difference. First operand 1159 states and 1403 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-24 17:32:57,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:57,362 INFO L93 Difference]: Finished difference Result 1649 states and 1998 transitions. [2023-12-24 17:32:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:32:57,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 271 [2023-12-24 17:32:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:57,367 INFO L225 Difference]: With dead ends: 1649 [2023-12-24 17:32:57,367 INFO L226 Difference]: Without dead ends: 911 [2023-12-24 17:32:57,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 535 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:32:57,369 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 198 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:57,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 744 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 17:32:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2023-12-24 17:32:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2023-12-24 17:32:57,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 751 states have (on average 1.133155792276964) internal successors, (851), 761 states have internal predecessors, (851), 116 states have call successors, (116), 43 states have call predecessors, (116), 43 states have return successors, (116), 106 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-24 17:32:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1083 transitions. [2023-12-24 17:32:57,485 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1083 transitions. Word has length 271 [2023-12-24 17:32:57,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:57,486 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1083 transitions. [2023-12-24 17:32:57,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-24 17:32:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1083 transitions. [2023-12-24 17:32:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-24 17:32:57,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:57,489 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:57,504 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 17:32:57,703 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 17:32:57,703 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:57,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:57,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1040759159, now seen corresponding path program 1 times [2023-12-24 17:32:57,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:57,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577204224] [2023-12-24 17:32:57,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:57,705 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 17:32:57,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:57,706 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 17:32:57,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 17:32:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:58,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:32:58,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:58,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 17:32:58,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 17:32:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2023-12-24 17:32:58,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:32:58,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:58,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577204224] [2023-12-24 17:32:58,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577204224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:32:58,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:32:58,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:32:58,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709807211] [2023-12-24 17:32:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:32:58,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:32:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:58,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:32:58,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:32:58,513 INFO L87 Difference]: Start difference. First operand 911 states and 1083 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:32:58,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:58,962 INFO L93 Difference]: Finished difference Result 1757 states and 2082 transitions. [2023-12-24 17:32:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:32:58,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 273 [2023-12-24 17:32:58,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:58,967 INFO L225 Difference]: With dead ends: 1757 [2023-12-24 17:32:58,967 INFO L226 Difference]: Without dead ends: 1341 [2023-12-24 17:32:58,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:32:58,968 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 128 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:58,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 606 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 17:32:58,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2023-12-24 17:32:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1195. [2023-12-24 17:32:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1022 states have (on average 1.1409001956947162) internal successors, (1166), 1036 states have internal predecessors, (1166), 124 states have call successors, (124), 48 states have call predecessors, (124), 48 states have return successors, (124), 110 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:32:59,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1414 transitions. [2023-12-24 17:32:59,066 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1414 transitions. Word has length 273 [2023-12-24 17:32:59,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:59,067 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1414 transitions. [2023-12-24 17:32:59,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:32:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1414 transitions. [2023-12-24 17:32:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-24 17:32:59,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:59,070 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:59,087 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 17:32:59,287 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 17:32:59,287 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:59,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash 239104519, now seen corresponding path program 1 times [2023-12-24 17:32:59,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:59,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539201364] [2023-12-24 17:32:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:59,288 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 17:32:59,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:59,289 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 17:32:59,290 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 17:32:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:59,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 17:32:59,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:33:01,733 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 15 [2023-12-24 17:33:01,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 17:33:01,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 17:33:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 10 proven. 1053 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2023-12-24 17:33:01,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:33:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2023-12-24 17:33:02,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:33:02,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539201364] [2023-12-24 17:33:02,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539201364] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:33:02,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:33:02,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2023-12-24 17:33:02,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488419174] [2023-12-24 17:33:02,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:33:02,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:33:02,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:33:02,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:33:02,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:33:02,353 INFO L87 Difference]: Start difference. First operand 1195 states and 1414 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:33:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:33:03,520 INFO L93 Difference]: Finished difference Result 1855 states and 2209 transitions. [2023-12-24 17:33:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 17:33:03,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 273 [2023-12-24 17:33:03,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:33:03,535 INFO L225 Difference]: With dead ends: 1855 [2023-12-24 17:33:03,541 INFO L226 Difference]: Without dead ends: 1129 [2023-12-24 17:33:03,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 534 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:33:03,543 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 146 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 17:33:03,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 958 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 17:33:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2023-12-24 17:33:03,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1125. [2023-12-24 17:33:03,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 952 states have (on average 1.1323529411764706) internal successors, (1078), 966 states have internal predecessors, (1078), 124 states have call successors, (124), 48 states have call predecessors, (124), 48 states have return successors, (124), 110 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:33:03,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1326 transitions. [2023-12-24 17:33:03,662 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1326 transitions. Word has length 273 [2023-12-24 17:33:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:33:03,662 INFO L495 AbstractCegarLoop]: Abstraction has 1125 states and 1326 transitions. [2023-12-24 17:33:03,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:33:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1326 transitions. [2023-12-24 17:33:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-24 17:33:03,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:33:03,665 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:33:03,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 17:33:03,880 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 17:33:03,881 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:33:03,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:33:03,881 INFO L85 PathProgramCache]: Analyzing trace with hash -900210549, now seen corresponding path program 1 times [2023-12-24 17:33:03,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:33:03,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848633458] [2023-12-24 17:33:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:33:03,882 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 17:33:03,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:33:03,883 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 17:33:03,884 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 17:33:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:33:04,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 17:33:04,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:33:06,163 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 15 [2023-12-24 17:33:06,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 17:33:06,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 17:33:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 10 proven. 1001 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2023-12-24 17:33:06,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:33:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2023-12-24 17:33:06,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:33:06,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848633458] [2023-12-24 17:33:06,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848633458] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:33:06,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:33:06,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2023-12-24 17:33:06,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915486779] [2023-12-24 17:33:06,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:33:06,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:33:06,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:33:06,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:33:06,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:33:06,769 INFO L87 Difference]: Start difference. First operand 1125 states and 1326 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:33:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:33:08,353 INFO L93 Difference]: Finished difference Result 1907 states and 2237 transitions. [2023-12-24 17:33:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 17:33:08,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 273 [2023-12-24 17:33:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:33:08,357 INFO L225 Difference]: With dead ends: 1907 [2023-12-24 17:33:08,357 INFO L226 Difference]: Without dead ends: 1275 [2023-12-24 17:33:08,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 537 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2023-12-24 17:33:08,359 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 230 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:33:08,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 969 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 17:33:08,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-12-24 17:33:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1117. [2023-12-24 17:33:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 940 states have (on average 1.1319148936170214) internal successors, (1064), 952 states have internal predecessors, (1064), 124 states have call successors, (124), 52 states have call predecessors, (124), 52 states have return successors, (124), 112 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 17:33:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1312 transitions. [2023-12-24 17:33:08,471 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1312 transitions. Word has length 273 [2023-12-24 17:33:08,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:33:08,471 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1312 transitions. [2023-12-24 17:33:08,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:33:08,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1312 transitions. [2023-12-24 17:33:08,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-24 17:33:08,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:33:08,474 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:33:08,490 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 17:33:08,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:33:08,689 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:33:08,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:33:08,690 INFO L85 PathProgramCache]: Analyzing trace with hash 379653129, now seen corresponding path program 1 times [2023-12-24 17:33:08,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:33:08,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924818868] [2023-12-24 17:33:08,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:33:08,691 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 17:33:08,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:33:08,693 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:33:08,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 17:33:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:33:09,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:33:09,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:33:09,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 17:33:09,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:33:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2023-12-24 17:33:09,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:33:09,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:33:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924818868] [2023-12-24 17:33:09,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924818868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:33:09,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:33:09,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:33:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737954330] [2023-12-24 17:33:09,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:33:09,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:33:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:33:09,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:33:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:33:09,610 INFO L87 Difference]: Start difference. First operand 1117 states and 1312 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:33:10,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:33:10,270 INFO L93 Difference]: Finished difference Result 1811 states and 2116 transitions. [2023-12-24 17:33:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:33:10,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 273 [2023-12-24 17:33:10,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:33:10,272 INFO L225 Difference]: With dead ends: 1811 [2023-12-24 17:33:10,272 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 17:33:10,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:33:10,274 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 84 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:33:10,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 578 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 17:33:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 17:33:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 17:33:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 17:33:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 17:33:10,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 273 [2023-12-24 17:33:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:33:10,276 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 17:33:10,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 17:33:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 17:33:10,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 17:33:10,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 17:33:10,293 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 (36)] Ended with exit code 0 [2023-12-24 17:33:10,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:33:10,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 17:34:13,627 WARN L293 SmtUtils]: Spent 58.12s on a formula simplification. DAG size of input: 138 DAG size of output: 122 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-24 17:37:07,530 WARN L293 SmtUtils]: Spent 2.90m on a formula simplification. DAG size of input: 209 DAG size of output: 156 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-24 17:38:08,025 WARN L293 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 138 DAG size of output: 122 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-24 17:38:54,887 WARN L293 SmtUtils]: Spent 46.86s on a formula simplification. DAG size of input: 128 DAG size of output: 111 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) Received shutdown request... [2023-12-24 17:41:22,338 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 17:41:23,538 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-24 17:41:23,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-24 17:41:23,588 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack at de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.restore(UndoableWrapperScript.java:87) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeIcfgHoareAnnotation(NwaCegarLoop.java:539) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop$CegarLoopResultBuilder.getResult(AbstractCegarLoop.java:873) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-24 17:41:23,591 INFO L158 Benchmark]: Toolchain (without parser) took 867143.56ms. Allocated memory was 261.1MB in the beginning and 723.5MB in the end (delta: 462.4MB). Free memory was 210.2MB in the beginning and 585.2MB in the end (delta: -375.0MB). Peak memory consumption was 433.4MB. Max. memory is 8.0GB. [2023-12-24 17:41:23,591 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 186.6MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 17:41:23,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.61ms. Allocated memory is still 261.1MB. Free memory was 210.2MB in the beginning and 195.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-24 17:41:23,592 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.40ms. Allocated memory is still 261.1MB. Free memory was 195.0MB in the beginning and 191.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 17:41:23,592 INFO L158 Benchmark]: Boogie Preprocessor took 151.93ms. Allocated memory is still 261.1MB. Free memory was 191.4MB in the beginning and 182.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-24 17:41:23,592 INFO L158 Benchmark]: RCFGBuilder took 1864.58ms. Allocated memory is still 261.1MB. Free memory was 182.5MB in the beginning and 208.0MB in the end (delta: -25.6MB). Peak memory consumption was 56.2MB. Max. memory is 8.0GB. [2023-12-24 17:41:23,592 INFO L158 Benchmark]: TraceAbstraction took 864740.54ms. Allocated memory was 261.1MB in the beginning and 723.5MB in the end (delta: 462.4MB). Free memory was 207.0MB in the beginning and 585.2MB in the end (delta: -378.3MB). Peak memory consumption was 429.6MB. Max. memory is 8.0GB. [2023-12-24 17:41:23,593 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 186.6MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 325.61ms. Allocated memory is still 261.1MB. Free memory was 210.2MB in the beginning and 195.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.40ms. Allocated memory is still 261.1MB. Free memory was 195.0MB in the beginning and 191.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 151.93ms. Allocated memory is still 261.1MB. Free memory was 191.4MB in the beginning and 182.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 1864.58ms. Allocated memory is still 261.1MB. Free memory was 182.5MB in the beginning and 208.0MB in the end (delta: -25.6MB). Peak memory consumption was 56.2MB. Max. memory is 8.0GB. * TraceAbstraction took 864740.54ms. Allocated memory was 261.1MB in the beginning and 723.5MB in the end (delta: 462.4MB). Free memory was 207.0MB in the beginning and 585.2MB in the end (delta: -378.3MB). Peak memory consumption was 429.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Not enough levels on assertion stack de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Not enough levels on assertion stack: de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown