/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-a_file-15.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 12:53:04,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 12:53:04,868 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 12:53:04,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 12:53:04,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 12:53:04,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 12:53:04,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 12:53:04,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 12:53:04,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 12:53:04,908 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 12:53:04,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 12:53:04,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 12:53:04,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 12:53:04,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 12:53:04,910 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 12:53:04,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 12:53:04,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 12:53:04,911 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 12:53:04,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 12:53:04,912 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 12:53:04,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 12:53:04,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 12:53:04,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 12:53:04,913 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 12:53:04,913 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 12:53:04,913 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 12:53:04,913 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 12:53:04,913 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 12:53:04,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 12:53:04,914 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 12:53:04,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 12:53:04,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 12:53:04,915 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 12:53:04,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 12:53:04,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 12:53:04,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 12:53:04,916 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 12:53:04,916 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 12:53:04,916 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 12:53:04,916 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 12:53:04,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 12:53:04,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 12:53:04,917 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 12:53:04,917 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 12:53:04,917 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 12:53:04,917 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 12:53:04,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 12:53:05,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 12:53:05,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 12:53:05,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 12:53:05,161 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 12:53:05,162 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 12:53:05,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-15.i [2023-12-24 12:53:06,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 12:53:06,555 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 12:53:06,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-15.i [2023-12-24 12:53:06,563 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fc1b4ed9/a6a6a4f7268a47a0b8c3464306527980/FLAGd50cee91b [2023-12-24 12:53:06,580 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fc1b4ed9/a6a6a4f7268a47a0b8c3464306527980 [2023-12-24 12:53:06,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 12:53:06,584 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 12:53:06,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 12:53:06,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 12:53:06,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 12:53:06,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:06,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc566d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06, skipping insertion in model container [2023-12-24 12:53:06,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:06,621 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 12:53:06,738 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-a_file-15.i[916,929] [2023-12-24 12:53:06,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 12:53:06,813 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 12:53:06,823 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-a_file-15.i[916,929] [2023-12-24 12:53:06,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 12:53:06,876 INFO L206 MainTranslator]: Completed translation [2023-12-24 12:53:06,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06 WrapperNode [2023-12-24 12:53:06,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 12:53:06,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 12:53:06,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 12:53:06,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 12:53:06,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:06,899 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:06,942 INFO L138 Inliner]: procedures = 33, calls = 155, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 500 [2023-12-24 12:53:06,943 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 12:53:06,944 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 12:53:06,944 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 12:53:06,944 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 12:53:06,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:06,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:06,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:06,987 INFO L175 MemorySlicer]: Split 127 memory accesses to 6 slices as follows [2, 16, 51, 25, 10, 23]. 40 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 2, 5, 2, 1, 2]. The 16 writes are split as follows [0, 2, 6, 4, 1, 3]. [2023-12-24 12:53:06,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:06,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:07,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:07,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:07,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:07,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:07,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 12:53:07,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 12:53:07,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 12:53:07,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 12:53:07,039 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (1/1) ... [2023-12-24 12:53:07,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 12:53:07,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 12:53:07,084 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 12:53:07,090 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 12:53:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 12:53:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 12:53:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 12:53:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 12:53:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 12:53:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 12:53:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 12:53:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 12:53:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 12:53:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 12:53:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 12:53:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 12:53:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 12:53:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 12:53:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 12:53:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 12:53:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 12:53:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 12:53:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 12:53:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 12:53:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 12:53:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 12:53:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 12:53:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 12:53:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 12:53:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 12:53:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 12:53:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 12:53:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 12:53:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 12:53:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 12:53:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 12:53:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 12:53:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 12:53:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 12:53:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 12:53:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 12:53:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 12:53:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 12:53:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 12:53:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 12:53:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 12:53:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 12:53:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 12:53:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 12:53:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 12:53:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 12:53:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 12:53:07,265 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 12:53:07,266 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 12:53:09,157 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 12:53:09,198 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 12:53:09,198 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 12:53:09,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 12:53:09 BoogieIcfgContainer [2023-12-24 12:53:09,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 12:53:09,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 12:53:09,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 12:53:09,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 12:53:09,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 12:53:06" (1/3) ... [2023-12-24 12:53:09,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7a9c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 12:53:09, skipping insertion in model container [2023-12-24 12:53:09,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:53:06" (2/3) ... [2023-12-24 12:53:09,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7a9c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 12:53:09, skipping insertion in model container [2023-12-24 12:53:09,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 12:53:09" (3/3) ... [2023-12-24 12:53:09,207 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-15.i [2023-12-24 12:53:09,222 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 12:53:09,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 12:53:09,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 12:53:09,284 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;@dd199f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 12:53:09,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 12:53:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 91 states have (on average 1.4835164835164836) internal successors, (135), 92 states have internal predecessors, (135), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 12:53:09,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 12:53:09,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:09,304 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:09,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:09,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:09,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1666154856, now seen corresponding path program 1 times [2023-12-24 12:53:09,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:09,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339866155] [2023-12-24 12:53:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:09,328 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 12:53:09,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:09,334 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 12:53:09,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 12:53:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:09,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 12:53:09,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-12-24 12:53:09,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:09,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:09,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339866155] [2023-12-24 12:53:09,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339866155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:09,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:09,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 12:53:09,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456716597] [2023-12-24 12:53:09,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:09,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 12:53:09,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:09,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 12:53:09,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 12:53:09,893 INFO L87 Difference]: Start difference. First operand has 106 states, 91 states have (on average 1.4835164835164836) internal successors, (135), 92 states have internal predecessors, (135), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:09,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:09,949 INFO L93 Difference]: Finished difference Result 209 states and 328 transitions. [2023-12-24 12:53:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 12:53:09,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2023-12-24 12:53:09,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:09,958 INFO L225 Difference]: With dead ends: 209 [2023-12-24 12:53:09,959 INFO L226 Difference]: Without dead ends: 104 [2023-12-24 12:53:09,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 109 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 12:53:09,964 INFO L413 NwaCegarLoop]: 148 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, 148 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 12:53:09,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 12:53:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-24 12:53:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-12-24 12:53:09,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 90 states have internal predecessors, (128), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 12:53:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 152 transitions. [2023-12-24 12:53:10,003 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 152 transitions. Word has length 110 [2023-12-24 12:53:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:10,003 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 152 transitions. [2023-12-24 12:53:10,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 152 transitions. [2023-12-24 12:53:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 12:53:10,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:10,007 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:10,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 12:53:10,215 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 12:53:10,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:10,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1359425398, now seen corresponding path program 1 times [2023-12-24 12:53:10,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:10,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095687801] [2023-12-24 12:53:10,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:10,218 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 12:53:10,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:10,219 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 12:53:10,222 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 12:53:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:10,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 12:53:10,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 12:53:10,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:10,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:10,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095687801] [2023-12-24 12:53:10,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095687801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:10,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:10,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 12:53:10,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798912753] [2023-12-24 12:53:10,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:10,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 12:53:10,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:10,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 12:53:10,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 12:53:10,700 INFO L87 Difference]: Start difference. First operand 104 states and 152 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:10,840 INFO L93 Difference]: Finished difference Result 213 states and 312 transitions. [2023-12-24 12:53:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:53:10,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2023-12-24 12:53:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:10,845 INFO L225 Difference]: With dead ends: 213 [2023-12-24 12:53:10,845 INFO L226 Difference]: Without dead ends: 110 [2023-12-24 12:53:10,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:53:10,847 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 10 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:10,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 436 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:53:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-24 12:53:10,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2023-12-24 12:53:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 12:53:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 154 transitions. [2023-12-24 12:53:10,861 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 154 transitions. Word has length 110 [2023-12-24 12:53:10,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:10,861 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 154 transitions. [2023-12-24 12:53:10,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 154 transitions. [2023-12-24 12:53:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 12:53:10,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:10,864 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:10,880 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 12:53:11,078 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 12:53:11,079 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:11,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash -627457972, now seen corresponding path program 1 times [2023-12-24 12:53:11,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:11,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001310669] [2023-12-24 12:53:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:11,081 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 12:53:11,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:11,084 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 12:53:11,085 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 12:53:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:11,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:53:11,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:11,933 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 15 [2023-12-24 12:53:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 24 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-24 12:53:11,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:53:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:12,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:12,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001310669] [2023-12-24 12:53:12,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001310669] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:53:12,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:53:12,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-24 12:53:12,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416517199] [2023-12-24 12:53:12,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:12,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:53:12,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:53:12,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:53:12,155 INFO L87 Difference]: Start difference. First operand 106 states and 154 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:12,299 INFO L93 Difference]: Finished difference Result 269 states and 389 transitions. [2023-12-24 12:53:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:53:12,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110 [2023-12-24 12:53:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:12,303 INFO L225 Difference]: With dead ends: 269 [2023-12-24 12:53:12,303 INFO L226 Difference]: Without dead ends: 164 [2023-12-24 12:53:12,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 12:53:12,305 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 154 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:12,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 534 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:53:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-24 12:53:12,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2023-12-24 12:53:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 144 states have (on average 1.4236111111111112) internal successors, (205), 145 states have internal predecessors, (205), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 12:53:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 233 transitions. [2023-12-24 12:53:12,320 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 233 transitions. Word has length 110 [2023-12-24 12:53:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:12,320 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 233 transitions. [2023-12-24 12:53:12,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 233 transitions. [2023-12-24 12:53:12,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 12:53:12,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:12,322 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:12,344 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 12:53:12,536 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 12:53:12,536 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:12,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:12,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2025227905, now seen corresponding path program 1 times [2023-12-24 12:53:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:12,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688216373] [2023-12-24 12:53:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:12,538 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 12:53:12,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:12,541 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 12:53:12,576 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 12:53:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:12,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 12:53:12,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 24 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-24 12:53:13,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:53:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:13,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:13,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688216373] [2023-12-24 12:53:13,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688216373] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:53:13,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:53:13,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 12:53:13,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875793173] [2023-12-24 12:53:13,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:13,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:53:13,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:13,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:53:13,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:53:13,430 INFO L87 Difference]: Start difference. First operand 161 states and 233 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:13,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:13,547 INFO L93 Difference]: Finished difference Result 328 states and 470 transitions. [2023-12-24 12:53:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:53:13,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110 [2023-12-24 12:53:13,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:13,549 INFO L225 Difference]: With dead ends: 328 [2023-12-24 12:53:13,549 INFO L226 Difference]: Without dead ends: 168 [2023-12-24 12:53:13,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:53:13,551 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 152 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:13,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 429 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:53:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-24 12:53:13,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 116. [2023-12-24 12:53:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 101 states have (on average 1.386138613861386) internal successors, (140), 101 states have internal predecessors, (140), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 12:53:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 164 transitions. [2023-12-24 12:53:13,559 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 164 transitions. Word has length 110 [2023-12-24 12:53:13,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:13,560 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 164 transitions. [2023-12-24 12:53:13,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 164 transitions. [2023-12-24 12:53:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 12:53:13,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:13,562 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:13,580 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 12:53:13,776 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 12:53:13,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:13,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:13,778 INFO L85 PathProgramCache]: Analyzing trace with hash 31083199, now seen corresponding path program 1 times [2023-12-24 12:53:13,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:13,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033789221] [2023-12-24 12:53:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:13,779 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 12:53:13,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:13,780 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 12:53:13,782 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 12:53:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:14,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 12:53:14,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:14,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:14,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:14,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033789221] [2023-12-24 12:53:14,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033789221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:14,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:14,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 12:53:14,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162361119] [2023-12-24 12:53:14,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:14,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 12:53:14,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:14,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 12:53:14,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 12:53:14,433 INFO L87 Difference]: Start difference. First operand 116 states and 164 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:14,508 INFO L93 Difference]: Finished difference Result 345 states and 489 transitions. [2023-12-24 12:53:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:53:14,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110 [2023-12-24 12:53:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:14,510 INFO L225 Difference]: With dead ends: 345 [2023-12-24 12:53:14,510 INFO L226 Difference]: Without dead ends: 230 [2023-12-24 12:53:14,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:53:14,511 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 90 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:14,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 420 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:53:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-24 12:53:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 220. [2023-12-24 12:53:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 191 states have (on average 1.387434554973822) internal successors, (265), 191 states have internal predecessors, (265), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 12:53:14,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 313 transitions. [2023-12-24 12:53:14,527 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 313 transitions. Word has length 110 [2023-12-24 12:53:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:14,527 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 313 transitions. [2023-12-24 12:53:14,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 313 transitions. [2023-12-24 12:53:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 12:53:14,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:14,529 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:14,545 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 12:53:14,744 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 12:53:14,745 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:14,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:14,745 INFO L85 PathProgramCache]: Analyzing trace with hash -793107827, now seen corresponding path program 1 times [2023-12-24 12:53:14,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:14,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998215364] [2023-12-24 12:53:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:14,746 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 12:53:14,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:14,748 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 12:53:14,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 12:53:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:15,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 12:53:15,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 24 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-24 12:53:15,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:53:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:15,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:15,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998215364] [2023-12-24 12:53:15,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998215364] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:53:15,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:53:15,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 12:53:15,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671087607] [2023-12-24 12:53:15,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:15,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:53:15,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:15,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:53:15,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:53:15,578 INFO L87 Difference]: Start difference. First operand 220 states and 313 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:15,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:15,700 INFO L93 Difference]: Finished difference Result 569 states and 807 transitions. [2023-12-24 12:53:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:53:15,701 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2023-12-24 12:53:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:15,703 INFO L225 Difference]: With dead ends: 569 [2023-12-24 12:53:15,703 INFO L226 Difference]: Without dead ends: 350 [2023-12-24 12:53:15,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:53:15,704 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 166 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:15,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 563 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:53:15,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-24 12:53:15,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 231. [2023-12-24 12:53:15,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 202 states have (on average 1.391089108910891) internal successors, (281), 202 states have internal predecessors, (281), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 12:53:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 329 transitions. [2023-12-24 12:53:15,717 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 329 transitions. Word has length 111 [2023-12-24 12:53:15,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:15,717 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 329 transitions. [2023-12-24 12:53:15,718 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:15,718 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 329 transitions. [2023-12-24 12:53:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 12:53:15,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:15,719 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:15,736 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 12:53:15,932 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 12:53:15,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:15,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash -92043249, now seen corresponding path program 1 times [2023-12-24 12:53:15,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078001615] [2023-12-24 12:53:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:15,934 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 12:53:15,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:15,935 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 12:53:15,937 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 12:53:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:16,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 12:53:16,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:16,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:16,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:16,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078001615] [2023-12-24 12:53:16,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078001615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:16,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:16,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 12:53:16,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730271654] [2023-12-24 12:53:16,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:16,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 12:53:16,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:16,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 12:53:16,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 12:53:16,619 INFO L87 Difference]: Start difference. First operand 231 states and 329 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:16,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:16,702 INFO L93 Difference]: Finished difference Result 495 states and 703 transitions. [2023-12-24 12:53:16,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:53:16,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2023-12-24 12:53:16,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:16,704 INFO L225 Difference]: With dead ends: 495 [2023-12-24 12:53:16,704 INFO L226 Difference]: Without dead ends: 265 [2023-12-24 12:53:16,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:53:16,706 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 158 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 489 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 12:53:16,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 489 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:53:16,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-24 12:53:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 232. [2023-12-24 12:53:16,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 203 states have (on average 1.3842364532019704) internal successors, (281), 203 states have internal predecessors, (281), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 12:53:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 329 transitions. [2023-12-24 12:53:16,719 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 329 transitions. Word has length 111 [2023-12-24 12:53:16,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:16,720 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 329 transitions. [2023-12-24 12:53:16,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 329 transitions. [2023-12-24 12:53:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 12:53:16,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:16,721 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:16,735 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 12:53:16,935 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 12:53:16,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:16,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash 735911985, now seen corresponding path program 1 times [2023-12-24 12:53:16,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:16,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468287469] [2023-12-24 12:53:16,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:16,937 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 12:53:16,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:16,938 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 12:53:16,939 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 12:53:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:17,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 12:53:17,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 24 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-24 12:53:17,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:53:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:17,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:17,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468287469] [2023-12-24 12:53:17,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468287469] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:53:17,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:53:17,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-12-24 12:53:17,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99788464] [2023-12-24 12:53:17,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:17,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:53:17,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:17,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:53:17,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:53:17,736 INFO L87 Difference]: Start difference. First operand 232 states and 329 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:17,843 INFO L93 Difference]: Finished difference Result 409 states and 574 transitions. [2023-12-24 12:53:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:53:17,843 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 112 [2023-12-24 12:53:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:17,845 INFO L225 Difference]: With dead ends: 409 [2023-12-24 12:53:17,845 INFO L226 Difference]: Without dead ends: 281 [2023-12-24 12:53:17,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:53:17,846 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 143 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:17,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 519 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:53:17,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-24 12:53:17,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 231. [2023-12-24 12:53:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 202 states have (on average 1.3762376237623761) internal successors, (278), 202 states have internal predecessors, (278), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 12:53:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2023-12-24 12:53:17,857 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 112 [2023-12-24 12:53:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:17,857 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2023-12-24 12:53:17,858 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2023-12-24 12:53:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 12:53:17,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:17,859 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:17,878 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 12:53:18,073 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 12:53:18,073 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:18,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:18,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1243534042, now seen corresponding path program 1 times [2023-12-24 12:53:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:18,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025007937] [2023-12-24 12:53:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:18,074 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 12:53:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:18,075 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 12:53:18,077 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 12:53:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:18,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:53:18,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 24 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-24 12:53:18,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:53:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:18,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:18,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025007937] [2023-12-24 12:53:18,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025007937] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:53:18,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:53:18,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 12:53:18,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95425931] [2023-12-24 12:53:18,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:18,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:53:18,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:18,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:53:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:53:18,838 INFO L87 Difference]: Start difference. First operand 231 states and 326 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:18,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:18,938 INFO L93 Difference]: Finished difference Result 406 states and 567 transitions. [2023-12-24 12:53:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:53:18,938 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 112 [2023-12-24 12:53:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:18,940 INFO L225 Difference]: With dead ends: 406 [2023-12-24 12:53:18,940 INFO L226 Difference]: Without dead ends: 279 [2023-12-24 12:53:18,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:53:18,941 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 146 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:18,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 494 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:53:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-24 12:53:18,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 229. [2023-12-24 12:53:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 200 states have (on average 1.365) internal successors, (273), 200 states have internal predecessors, (273), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 12:53:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 321 transitions. [2023-12-24 12:53:18,951 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 321 transitions. Word has length 112 [2023-12-24 12:53:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:18,951 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 321 transitions. [2023-12-24 12:53:18,951 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 321 transitions. [2023-12-24 12:53:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 12:53:18,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:18,953 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:18,969 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 12:53:19,164 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 12:53:19,164 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:19,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:19,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1713590941, now seen corresponding path program 1 times [2023-12-24 12:53:19,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:19,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883131232] [2023-12-24 12:53:19,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:19,166 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 12:53:19,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:19,167 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 12:53:19,170 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 12:53:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:19,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 12:53:19,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 24 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-24 12:53:19,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:53:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:19,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:19,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883131232] [2023-12-24 12:53:19,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883131232] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:53:19,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:53:19,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-12-24 12:53:19,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269622600] [2023-12-24 12:53:19,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:19,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:53:19,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:19,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:53:19,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:53:19,989 INFO L87 Difference]: Start difference. First operand 229 states and 321 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:20,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:20,091 INFO L93 Difference]: Finished difference Result 426 states and 592 transitions. [2023-12-24 12:53:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:53:20,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 12:53:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:20,093 INFO L225 Difference]: With dead ends: 426 [2023-12-24 12:53:20,093 INFO L226 Difference]: Without dead ends: 301 [2023-12-24 12:53:20,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:53:20,094 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 161 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:20,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 471 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:53:20,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-24 12:53:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 229. [2023-12-24 12:53:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 200 states have (on average 1.36) internal successors, (272), 200 states have internal predecessors, (272), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 12:53:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 320 transitions. [2023-12-24 12:53:20,103 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 320 transitions. Word has length 113 [2023-12-24 12:53:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:20,104 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 320 transitions. [2023-12-24 12:53:20,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 320 transitions. [2023-12-24 12:53:20,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 12:53:20,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:20,105 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:20,118 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 12:53:20,305 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 12:53:20,306 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:20,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:20,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2031270723, now seen corresponding path program 1 times [2023-12-24 12:53:20,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:20,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067849282] [2023-12-24 12:53:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:20,307 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 12:53:20,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:20,308 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 12:53:20,313 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 12:53:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:20,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:53:20,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:20,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 12:53:20,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2023-12-24 12:53:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:20,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:20,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:20,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067849282] [2023-12-24 12:53:20,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067849282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:20,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:20,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 12:53:20,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527616975] [2023-12-24 12:53:20,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:20,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:53:20,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:20,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:53:20,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 12:53:20,758 INFO L87 Difference]: Start difference. First operand 229 states and 320 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:20,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:20,999 INFO L93 Difference]: Finished difference Result 733 states and 1026 transitions. [2023-12-24 12:53:21,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:53:21,000 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 12:53:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:21,003 INFO L225 Difference]: With dead ends: 733 [2023-12-24 12:53:21,003 INFO L226 Difference]: Without dead ends: 505 [2023-12-24 12:53:21,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:53:21,004 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 229 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:21,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1162 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 12:53:21,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-12-24 12:53:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 461. [2023-12-24 12:53:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 404 states have (on average 1.3564356435643565) internal successors, (548), 404 states have internal predecessors, (548), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:53:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 644 transitions. [2023-12-24 12:53:21,025 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 644 transitions. Word has length 113 [2023-12-24 12:53:21,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:21,025 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 644 transitions. [2023-12-24 12:53:21,025 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:21,025 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 644 transitions. [2023-12-24 12:53:21,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 12:53:21,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:21,026 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:21,047 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 12:53:21,240 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 12:53:21,241 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:21,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:21,241 INFO L85 PathProgramCache]: Analyzing trace with hash 591318948, now seen corresponding path program 1 times [2023-12-24 12:53:21,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:21,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033254265] [2023-12-24 12:53:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:21,242 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 12:53:21,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:21,243 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 12:53:21,244 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 12:53:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:21,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 12:53:21,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:22,108 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 11 [2023-12-24 12:53:22,197 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:22,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:22,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:22,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033254265] [2023-12-24 12:53:22,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033254265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:22,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:22,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 12:53:22,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647949577] [2023-12-24 12:53:22,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:22,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 12:53:22,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:22,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 12:53:22,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-24 12:53:22,199 INFO L87 Difference]: Start difference. First operand 461 states and 644 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:22,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:22,765 INFO L93 Difference]: Finished difference Result 1053 states and 1461 transitions. [2023-12-24 12:53:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:53:22,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2023-12-24 12:53:22,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:22,769 INFO L225 Difference]: With dead ends: 1053 [2023-12-24 12:53:22,769 INFO L226 Difference]: Without dead ends: 593 [2023-12-24 12:53:22,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-12-24 12:53:22,770 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 249 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:22,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1188 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 12:53:22,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-12-24 12:53:22,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 468. [2023-12-24 12:53:22,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 411 states have (on average 1.3503649635036497) internal successors, (555), 411 states have internal predecessors, (555), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:53:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 651 transitions. [2023-12-24 12:53:22,796 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 651 transitions. Word has length 114 [2023-12-24 12:53:22,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:22,796 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 651 transitions. [2023-12-24 12:53:22,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:22,796 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 651 transitions. [2023-12-24 12:53:22,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 12:53:22,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:22,797 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:22,815 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 12:53:23,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:53:23,012 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:23,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1780420314, now seen corresponding path program 1 times [2023-12-24 12:53:23,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:23,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183885317] [2023-12-24 12:53:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:23,013 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 12:53:23,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:23,014 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:53:23,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 12:53:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:23,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:53:23,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:23,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 12:53:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-24 12:53:23,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:23,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:23,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183885317] [2023-12-24 12:53:23,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183885317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:23,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:23,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 12:53:23,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475895095] [2023-12-24 12:53:23,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:23,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 12:53:23,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 12:53:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-24 12:53:23,652 INFO L87 Difference]: Start difference. First operand 468 states and 651 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:24,215 INFO L93 Difference]: Finished difference Result 1004 states and 1384 transitions. [2023-12-24 12:53:24,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 12:53:24,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-12-24 12:53:24,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:24,218 INFO L225 Difference]: With dead ends: 1004 [2023-12-24 12:53:24,218 INFO L226 Difference]: Without dead ends: 537 [2023-12-24 12:53:24,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-12-24 12:53:24,219 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 459 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:24,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 786 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 12:53:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-12-24 12:53:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 421. [2023-12-24 12:53:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 362 states have (on average 1.3370165745856353) internal successors, (484), 362 states have internal predecessors, (484), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:53:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 580 transitions. [2023-12-24 12:53:24,241 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 580 transitions. Word has length 114 [2023-12-24 12:53:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:24,241 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 580 transitions. [2023-12-24 12:53:24,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 580 transitions. [2023-12-24 12:53:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 12:53:24,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:24,243 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:24,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 12:53:24,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:53:24,457 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:24,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1359157464, now seen corresponding path program 1 times [2023-12-24 12:53:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:24,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013855150] [2023-12-24 12:53:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:24,458 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 12:53:24,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:24,459 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 12:53:24,461 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 12:53:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:24,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 12:53:24,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:25,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-12-24 12:53:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:25,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:25,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:25,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013855150] [2023-12-24 12:53:25,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013855150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:25,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:25,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 12:53:25,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201015092] [2023-12-24 12:53:25,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:25,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 12:53:25,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:25,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 12:53:25,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-24 12:53:25,441 INFO L87 Difference]: Start difference. First operand 421 states and 580 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:25,902 INFO L93 Difference]: Finished difference Result 792 states and 1087 transitions. [2023-12-24 12:53:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:53:25,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 115 [2023-12-24 12:53:25,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:25,904 INFO L225 Difference]: With dead ends: 792 [2023-12-24 12:53:25,904 INFO L226 Difference]: Without dead ends: 432 [2023-12-24 12:53:25,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:53:25,906 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 212 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:25,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 953 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 12:53:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-24 12:53:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 416. [2023-12-24 12:53:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 357 states have (on average 1.3333333333333333) internal successors, (476), 357 states have internal predecessors, (476), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:53:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 572 transitions. [2023-12-24 12:53:25,925 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 572 transitions. Word has length 115 [2023-12-24 12:53:25,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:25,925 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 572 transitions. [2023-12-24 12:53:25,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 572 transitions. [2023-12-24 12:53:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 12:53:25,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:25,927 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:25,945 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 12:53:26,140 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 12:53:26,140 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:26,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:26,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1639103148, now seen corresponding path program 1 times [2023-12-24 12:53:26,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:26,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890905645] [2023-12-24 12:53:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:26,141 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 12:53:26,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:26,142 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 12:53:26,143 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 12:53:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:26,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:53:26,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:26,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:53:26,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 65 [2023-12-24 12:53:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 12:53:26,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:26,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:26,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890905645] [2023-12-24 12:53:26,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890905645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:26,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:26,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:53:26,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743778266] [2023-12-24 12:53:26,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:26,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:53:26,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:26,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:53:26,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 12:53:26,659 INFO L87 Difference]: Start difference. First operand 416 states and 572 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:28,734 INFO L93 Difference]: Finished difference Result 837 states and 1155 transitions. [2023-12-24 12:53:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:53:28,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2023-12-24 12:53:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:28,744 INFO L225 Difference]: With dead ends: 837 [2023-12-24 12:53:28,744 INFO L226 Difference]: Without dead ends: 440 [2023-12-24 12:53:28,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:53:28,745 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 147 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:28,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 457 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 12:53:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-24 12:53:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 416. [2023-12-24 12:53:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 357 states have (on average 1.3221288515406162) internal successors, (472), 357 states have internal predecessors, (472), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:53:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 568 transitions. [2023-12-24 12:53:28,763 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 568 transitions. Word has length 116 [2023-12-24 12:53:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:28,764 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 568 transitions. [2023-12-24 12:53:28,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:28,764 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 568 transitions. [2023-12-24 12:53:28,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 12:53:28,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:28,765 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:28,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 12:53:28,980 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 12:53:28,980 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:28,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1416715344, now seen corresponding path program 1 times [2023-12-24 12:53:28,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:28,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204606223] [2023-12-24 12:53:28,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:28,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:53:28,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:28,982 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 12:53:28,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 12:53:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:29,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 12:53:29,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-24 12:53:29,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:29,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:29,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204606223] [2023-12-24 12:53:29,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204606223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:29,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:29,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 12:53:29,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216916414] [2023-12-24 12:53:29,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:29,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:53:29,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:29,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:53:29,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 12:53:29,384 INFO L87 Difference]: Start difference. First operand 416 states and 568 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:53:29,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:29,524 INFO L93 Difference]: Finished difference Result 836 states and 1138 transitions. [2023-12-24 12:53:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:53:29,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 118 [2023-12-24 12:53:29,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:29,526 INFO L225 Difference]: With dead ends: 836 [2023-12-24 12:53:29,526 INFO L226 Difference]: Without dead ends: 432 [2023-12-24 12:53:29,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 12:53:29,528 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 7 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:29,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 625 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:53:29,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-24 12:53:29,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 416. [2023-12-24 12:53:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 357 states have (on average 1.3109243697478992) internal successors, (468), 357 states have internal predecessors, (468), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:53:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 564 transitions. [2023-12-24 12:53:29,551 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 564 transitions. Word has length 118 [2023-12-24 12:53:29,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:29,551 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 564 transitions. [2023-12-24 12:53:29,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:53:29,551 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 564 transitions. [2023-12-24 12:53:29,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 12:53:29,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:29,553 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:29,568 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 12:53:29,767 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 12:53:29,768 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:29,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2107518386, now seen corresponding path program 1 times [2023-12-24 12:53:29,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:29,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880275318] [2023-12-24 12:53:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:29,769 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 12:53:29,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:29,770 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 12:53:29,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 12:53:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:30,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:53:30,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:30,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:53:30,290 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 173 treesize of output 65 [2023-12-24 12:53:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 12:53:30,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:30,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:30,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880275318] [2023-12-24 12:53:30,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880275318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:30,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:30,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:53:30,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223291490] [2023-12-24 12:53:30,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:30,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:53:30,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:30,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:53:30,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 12:53:30,314 INFO L87 Difference]: Start difference. First operand 416 states and 564 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:32,155 INFO L93 Difference]: Finished difference Result 830 states and 1130 transitions. [2023-12-24 12:53:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:53:32,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2023-12-24 12:53:32,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:32,168 INFO L225 Difference]: With dead ends: 830 [2023-12-24 12:53:32,168 INFO L226 Difference]: Without dead ends: 440 [2023-12-24 12:53:32,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:53:32,170 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 139 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:32,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 449 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 12:53:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-24 12:53:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 416. [2023-12-24 12:53:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 357 states have (on average 1.2997198879551821) internal successors, (464), 357 states have internal predecessors, (464), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:53:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 560 transitions. [2023-12-24 12:53:32,190 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 560 transitions. Word has length 118 [2023-12-24 12:53:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:32,190 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 560 transitions. [2023-12-24 12:53:32,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 560 transitions. [2023-12-24 12:53:32,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 12:53:32,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:32,191 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:32,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 12:53:32,404 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 12:53:32,404 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:32,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:32,405 INFO L85 PathProgramCache]: Analyzing trace with hash -826375788, now seen corresponding path program 1 times [2023-12-24 12:53:32,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:32,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561579637] [2023-12-24 12:53:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:32,406 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 12:53:32,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:32,407 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 12:53:32,408 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 12:53:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:32,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:53:32,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:33,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:53:33,006 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 173 treesize of output 65 [2023-12-24 12:53:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 12:53:33,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:33,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:33,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561579637] [2023-12-24 12:53:33,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561579637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:33,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:33,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:53:33,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062749562] [2023-12-24 12:53:33,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:33,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:53:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:53:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 12:53:33,029 INFO L87 Difference]: Start difference. First operand 416 states and 560 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:35,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:35,016 INFO L93 Difference]: Finished difference Result 813 states and 1098 transitions. [2023-12-24 12:53:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:53:35,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2023-12-24 12:53:35,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:35,027 INFO L225 Difference]: With dead ends: 813 [2023-12-24 12:53:35,027 INFO L226 Difference]: Without dead ends: 432 [2023-12-24 12:53:35,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:53:35,029 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 141 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:35,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 440 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 12:53:35,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-24 12:53:35,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 408. [2023-12-24 12:53:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 349 states have (on average 1.2951289398280803) internal successors, (452), 349 states have internal predecessors, (452), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:53:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 548 transitions. [2023-12-24 12:53:35,049 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 548 transitions. Word has length 120 [2023-12-24 12:53:35,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:35,049 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 548 transitions. [2023-12-24 12:53:35,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:35,049 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 548 transitions. [2023-12-24 12:53:35,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 12:53:35,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:35,050 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:35,068 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 12:53:35,269 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 12:53:35,269 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:35,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:35,270 INFO L85 PathProgramCache]: Analyzing trace with hash 326176460, now seen corresponding path program 1 times [2023-12-24 12:53:35,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:35,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965037459] [2023-12-24 12:53:35,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:35,270 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 12:53:35,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:35,271 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 12:53:35,273 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 12:53:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:35,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 12:53:35,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:35,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:53:35,924 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 172 treesize of output 64 [2023-12-24 12:53:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 140 proven. 24 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-24 12:53:35,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:53:36,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:53:36,183 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 110 treesize of output 1 [2023-12-24 12:53:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-24 12:53:36,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:36,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965037459] [2023-12-24 12:53:36,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965037459] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 12:53:36,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 12:53:36,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 12:53:36,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405949386] [2023-12-24 12:53:36,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 12:53:36,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 12:53:36,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 12:53:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:53:36,197 INFO L87 Difference]: Start difference. First operand 408 states and 548 transitions. Second operand has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 12 states have internal predecessors, (98), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-24 12:53:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:38,841 INFO L93 Difference]: Finished difference Result 842 states and 1119 transitions. [2023-12-24 12:53:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 12:53:38,852 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 12 states have internal predecessors, (98), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 122 [2023-12-24 12:53:38,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:38,854 INFO L225 Difference]: With dead ends: 842 [2023-12-24 12:53:38,854 INFO L226 Difference]: Without dead ends: 424 [2023-12-24 12:53:38,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-12-24 12:53:38,856 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 131 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:38,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 584 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 12:53:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-12-24 12:53:38,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 408. [2023-12-24 12:53:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 349 states have (on average 1.2722063037249283) internal successors, (444), 349 states have internal predecessors, (444), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:53:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 540 transitions. [2023-12-24 12:53:38,876 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 540 transitions. Word has length 122 [2023-12-24 12:53:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:38,876 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 540 transitions. [2023-12-24 12:53:38,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 12 states have internal predecessors, (98), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-24 12:53:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 540 transitions. [2023-12-24 12:53:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 12:53:38,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:38,877 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:38,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 12:53:39,092 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 12:53:39,093 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:39,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash -561046386, now seen corresponding path program 1 times [2023-12-24 12:53:39,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:39,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450210491] [2023-12-24 12:53:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:39,094 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 12:53:39,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:39,095 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 12:53:39,130 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 12:53:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:39,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:53:39,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:39,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:53:39,690 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 173 treesize of output 65 [2023-12-24 12:53:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 12:53:39,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:39,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:39,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450210491] [2023-12-24 12:53:39,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450210491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:39,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:39,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:53:39,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44262521] [2023-12-24 12:53:39,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:39,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:53:39,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:39,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:53:39,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 12:53:39,709 INFO L87 Difference]: Start difference. First operand 408 states and 540 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:40,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:40,980 INFO L93 Difference]: Finished difference Result 800 states and 1064 transitions. [2023-12-24 12:53:40,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:53:40,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2023-12-24 12:53:40,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:40,992 INFO L225 Difference]: With dead ends: 800 [2023-12-24 12:53:40,992 INFO L226 Difference]: Without dead ends: 432 [2023-12-24 12:53:40,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:53:40,993 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 117 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:40,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 431 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 12:53:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-24 12:53:41,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 408. [2023-12-24 12:53:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 349 states have (on average 1.2607449856733524) internal successors, (440), 349 states have internal predecessors, (440), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:53:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 536 transitions. [2023-12-24 12:53:41,013 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 536 transitions. Word has length 122 [2023-12-24 12:53:41,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:41,013 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 536 transitions. [2023-12-24 12:53:41,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 536 transitions. [2023-12-24 12:53:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 12:53:41,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:41,014 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:41,035 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 12:53:41,229 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 12:53:41,229 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:41,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:41,230 INFO L85 PathProgramCache]: Analyzing trace with hash -254382636, now seen corresponding path program 1 times [2023-12-24 12:53:41,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:41,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397912634] [2023-12-24 12:53:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:41,230 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 12:53:41,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:41,231 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 12:53:41,243 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 12:53:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:41,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 12:53:41,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:42,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-24 12:53:42,587 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 12:53:42,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-24 12:53:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 12:53:42,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:42,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:42,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397912634] [2023-12-24 12:53:42,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397912634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:42,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:42,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-24 12:53:42,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760029800] [2023-12-24 12:53:42,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:42,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 12:53:42,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:42,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 12:53:42,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-12-24 12:53:42,949 INFO L87 Difference]: Start difference. First operand 408 states and 536 transitions. Second operand has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:53:44,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:44,502 INFO L93 Difference]: Finished difference Result 787 states and 1029 transitions. [2023-12-24 12:53:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 12:53:44,502 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2023-12-24 12:53:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:44,504 INFO L225 Difference]: With dead ends: 787 [2023-12-24 12:53:44,504 INFO L226 Difference]: Without dead ends: 540 [2023-12-24 12:53:44,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2023-12-24 12:53:44,506 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 316 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:44,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 2110 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 12:53:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-12-24 12:53:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 520. [2023-12-24 12:53:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 447 states have (on average 1.25503355704698) internal successors, (561), 448 states have internal predecessors, (561), 58 states have call successors, (58), 14 states have call predecessors, (58), 14 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 12:53:44,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 677 transitions. [2023-12-24 12:53:44,535 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 677 transitions. Word has length 124 [2023-12-24 12:53:44,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:44,535 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 677 transitions. [2023-12-24 12:53:44,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:53:44,536 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 677 transitions. [2023-12-24 12:53:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 12:53:44,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:44,537 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:44,556 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 12:53:44,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:53:44,752 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:44,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash -113834026, now seen corresponding path program 1 times [2023-12-24 12:53:44,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:44,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808848104] [2023-12-24 12:53:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:44,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:53:44,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:44,754 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:53:44,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 12:53:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:45,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 12:53:45,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:45,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-24 12:53:45,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 12:53:46,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-12-24 12:53:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 12:53:46,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:46,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:46,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808848104] [2023-12-24 12:53:46,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808848104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:46,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:46,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-24 12:53:46,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438818882] [2023-12-24 12:53:46,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:46,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 12:53:46,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:46,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 12:53:46,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-12-24 12:53:46,362 INFO L87 Difference]: Start difference. First operand 520 states and 677 transitions. Second operand has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:53:48,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:48,235 INFO L93 Difference]: Finished difference Result 879 states and 1150 transitions. [2023-12-24 12:53:48,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 12:53:48,236 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2023-12-24 12:53:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:48,240 INFO L225 Difference]: With dead ends: 879 [2023-12-24 12:53:48,240 INFO L226 Difference]: Without dead ends: 632 [2023-12-24 12:53:48,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2023-12-24 12:53:48,241 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 249 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:48,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 2253 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 12:53:48,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-24 12:53:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 453. [2023-12-24 12:53:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 396 states have (on average 1.27020202020202) internal successors, (503), 397 states have internal predecessors, (503), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 12:53:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 595 transitions. [2023-12-24 12:53:48,277 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 595 transitions. Word has length 124 [2023-12-24 12:53:48,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:48,278 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 595 transitions. [2023-12-24 12:53:48,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:53:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 595 transitions. [2023-12-24 12:53:48,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 12:53:48,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:48,280 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:48,292 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 (23)] Ended with exit code 0 [2023-12-24 12:53:48,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:53:48,480 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:48,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:48,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1180958564, now seen corresponding path program 1 times [2023-12-24 12:53:48,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:48,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90852403] [2023-12-24 12:53:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:48,482 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 12:53:48,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:48,482 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 12:53:48,484 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 12:53:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:48,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 12:53:48,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:49,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-24 12:53:49,660 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 12:53:49,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-24 12:53:50,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:53:50,181 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 57 treesize of output 27 [2023-12-24 12:53:50,189 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 12:53:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 12:53:50,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:50,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90852403] [2023-12-24 12:53:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90852403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:50,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-24 12:53:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211649345] [2023-12-24 12:53:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:50,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 12:53:50,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:50,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 12:53:50,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-12-24 12:53:50,265 INFO L87 Difference]: Start difference. First operand 453 states and 595 transitions. Second operand has 20 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:53:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:51,725 INFO L93 Difference]: Finished difference Result 874 states and 1151 transitions. [2023-12-24 12:53:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 12:53:51,726 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 125 [2023-12-24 12:53:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:51,728 INFO L225 Difference]: With dead ends: 874 [2023-12-24 12:53:51,728 INFO L226 Difference]: Without dead ends: 551 [2023-12-24 12:53:51,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2023-12-24 12:53:51,730 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 431 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:51,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1566 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 12:53:51,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-12-24 12:53:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 468. [2023-12-24 12:53:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 411 states have (on average 1.267639902676399) internal successors, (521), 412 states have internal predecessors, (521), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 12:53:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 613 transitions. [2023-12-24 12:53:51,756 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 613 transitions. Word has length 125 [2023-12-24 12:53:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:51,756 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 613 transitions. [2023-12-24 12:53:51,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:53:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 613 transitions. [2023-12-24 12:53:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 12:53:51,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:51,757 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:51,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 12:53:51,972 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 12:53:51,973 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:51,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1242998178, now seen corresponding path program 1 times [2023-12-24 12:53:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:51,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616333805] [2023-12-24 12:53:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:51,974 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 12:53:51,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:51,976 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 12:53:51,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 12:53:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:52,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 12:53:52,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:53,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-24 12:53:53,271 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 12:53:53,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-12-24 12:53:53,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:53:53,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 30 [2023-12-24 12:53:53,943 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 47 treesize of output 31 [2023-12-24 12:53:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 12:53:54,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:54,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:54,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616333805] [2023-12-24 12:53:54,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616333805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:54,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:54,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-24 12:53:54,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310552321] [2023-12-24 12:53:54,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:54,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 12:53:54,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:54,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 12:53:54,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-12-24 12:53:54,028 INFO L87 Difference]: Start difference. First operand 468 states and 613 transitions. Second operand has 20 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:53:56,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:56,093 INFO L93 Difference]: Finished difference Result 869 states and 1143 transitions. [2023-12-24 12:53:56,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 12:53:56,094 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 125 [2023-12-24 12:53:56,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:56,096 INFO L225 Difference]: With dead ends: 869 [2023-12-24 12:53:56,096 INFO L226 Difference]: Without dead ends: 546 [2023-12-24 12:53:56,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2023-12-24 12:53:56,097 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 359 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:56,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 2323 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 12:53:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2023-12-24 12:53:56,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 448. [2023-12-24 12:53:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 391 states have (on average 1.2659846547314577) internal successors, (495), 392 states have internal predecessors, (495), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 12:53:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 587 transitions. [2023-12-24 12:53:56,125 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 587 transitions. Word has length 125 [2023-12-24 12:53:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:56,125 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 587 transitions. [2023-12-24 12:53:56,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:53:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 587 transitions. [2023-12-24 12:53:56,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 12:53:56,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:56,126 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:56,141 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 12:53:56,341 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 12:53:56,341 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:56,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:56,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1713892668, now seen corresponding path program 1 times [2023-12-24 12:53:56,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:56,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679711269] [2023-12-24 12:53:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:56,342 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 12:53:56,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:56,344 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 12:53:56,346 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 12:53:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:56,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:53:56,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 24 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-24 12:53:57,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:53:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:57,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:57,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679711269] [2023-12-24 12:53:57,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679711269] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:53:57,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:53:57,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 12:53:57,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342271007] [2023-12-24 12:53:57,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:57,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:53:57,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:57,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:53:57,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:53:57,178 INFO L87 Difference]: Start difference. First operand 448 states and 587 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:57,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:57,281 INFO L93 Difference]: Finished difference Result 1057 states and 1398 transitions. [2023-12-24 12:53:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:53:57,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 125 [2023-12-24 12:53:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:57,291 INFO L225 Difference]: With dead ends: 1057 [2023-12-24 12:53:57,291 INFO L226 Difference]: Without dead ends: 610 [2023-12-24 12:53:57,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:53:57,294 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 129 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:57,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 579 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:53:57,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2023-12-24 12:53:57,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 463. [2023-12-24 12:53:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 406 states have (on average 1.2684729064039408) internal successors, (515), 407 states have internal predecessors, (515), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 12:53:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 607 transitions. [2023-12-24 12:53:57,337 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 607 transitions. Word has length 125 [2023-12-24 12:53:57,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:57,337 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 607 transitions. [2023-12-24 12:53:57,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:53:57,338 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 607 transitions. [2023-12-24 12:53:57,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 12:53:57,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:57,339 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:57,354 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 12:53:57,553 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 12:53:57,553 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:57,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:57,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1562428243, now seen corresponding path program 1 times [2023-12-24 12:53:57,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:57,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006618850] [2023-12-24 12:53:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:57,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:53:57,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:57,555 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 12:53:57,556 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 12:53:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:58,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 12:53:58,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:58,261 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 12:53:58,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-24 12:53:58,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 12:53:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-24 12:53:58,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:58,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:58,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006618850] [2023-12-24 12:53:58,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006618850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:58,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:58,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 12:53:58,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874197837] [2023-12-24 12:53:58,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:58,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 12:53:58,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:58,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 12:53:58,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-24 12:53:58,446 INFO L87 Difference]: Start difference. First operand 463 states and 607 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:53:58,933 INFO L93 Difference]: Finished difference Result 949 states and 1242 transitions. [2023-12-24 12:53:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 12:53:58,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2023-12-24 12:53:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:53:58,936 INFO L225 Difference]: With dead ends: 949 [2023-12-24 12:53:58,936 INFO L226 Difference]: Without dead ends: 487 [2023-12-24 12:53:58,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-24 12:53:58,937 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 366 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 12:53:58,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 721 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 12:53:58,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-24 12:53:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 463. [2023-12-24 12:53:58,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 406 states have (on average 1.2635467980295567) internal successors, (513), 407 states have internal predecessors, (513), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 12:53:58,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 605 transitions. [2023-12-24 12:53:58,963 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 605 transitions. Word has length 125 [2023-12-24 12:53:58,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:53:58,963 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 605 transitions. [2023-12-24 12:53:58,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:53:58,963 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 605 transitions. [2023-12-24 12:53:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 12:53:58,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:53:58,964 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:58,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-24 12:53:59,180 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 12:53:59,180 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:53:59,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:53:59,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1169401233, now seen corresponding path program 1 times [2023-12-24 12:53:59,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:53:59,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372282210] [2023-12-24 12:53:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:53:59,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:53:59,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:53:59,183 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 12:53:59,201 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 12:53:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:53:59,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 12:53:59,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:53:59,778 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 11 [2023-12-24 12:53:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:53:59,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:53:59,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:53:59,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372282210] [2023-12-24 12:53:59,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372282210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:53:59,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:53:59,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 12:53:59,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134223484] [2023-12-24 12:53:59,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:53:59,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 12:53:59,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:53:59,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 12:53:59,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:53:59,927 INFO L87 Difference]: Start difference. First operand 463 states and 605 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:54:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:54:00,668 INFO L93 Difference]: Finished difference Result 995 states and 1291 transitions. [2023-12-24 12:54:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 12:54:00,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 125 [2023-12-24 12:54:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:54:00,671 INFO L225 Difference]: With dead ends: 995 [2023-12-24 12:54:00,671 INFO L226 Difference]: Without dead ends: 533 [2023-12-24 12:54:00,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2023-12-24 12:54:00,672 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 362 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 12:54:00,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1613 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 12:54:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-12-24 12:54:00,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 463. [2023-12-24 12:54:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 406 states have (on average 1.2610837438423645) internal successors, (512), 407 states have internal predecessors, (512), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 12:54:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 604 transitions. [2023-12-24 12:54:00,699 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 604 transitions. Word has length 125 [2023-12-24 12:54:00,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:54:00,700 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 604 transitions. [2023-12-24 12:54:00,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:54:00,700 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 604 transitions. [2023-12-24 12:54:00,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 12:54:00,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:54:00,701 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:00,719 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 12:54:00,916 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 12:54:00,917 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:54:00,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:54:00,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1141006640, now seen corresponding path program 1 times [2023-12-24 12:54:00,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:54:00,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171131291] [2023-12-24 12:54:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:54:00,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:54:00,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:54:00,919 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 12:54:00,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 12:54:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:54:01,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 12:54:01,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:54:01,655 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 12:54:01,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-24 12:54:02,186 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:54:02,187 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 54 treesize of output 22 [2023-12-24 12:54:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 12:54:02,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:54:02,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:54:02,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171131291] [2023-12-24 12:54:02,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171131291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:54:02,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:54:02,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-24 12:54:02,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379661399] [2023-12-24 12:54:02,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:54:02,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 12:54:02,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:54:02,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 12:54:02,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-12-24 12:54:02,271 INFO L87 Difference]: Start difference. First operand 463 states and 604 transitions. Second operand has 19 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:54:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:54:03,591 INFO L93 Difference]: Finished difference Result 810 states and 1065 transitions. [2023-12-24 12:54:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 12:54:03,591 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 127 [2023-12-24 12:54:03,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:54:03,593 INFO L225 Difference]: With dead ends: 810 [2023-12-24 12:54:03,593 INFO L226 Difference]: Without dead ends: 487 [2023-12-24 12:54:03,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=1510, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 12:54:03,595 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 533 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 12:54:03,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1749 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 12:54:03,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-24 12:54:03,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 466. [2023-12-24 12:54:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 409 states have (on average 1.2591687041564792) internal successors, (515), 410 states have internal predecessors, (515), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 12:54:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 607 transitions. [2023-12-24 12:54:03,622 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 607 transitions. Word has length 127 [2023-12-24 12:54:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:54:03,622 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 607 transitions. [2023-12-24 12:54:03,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:54:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 607 transitions. [2023-12-24 12:54:03,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 12:54:03,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:54:03,623 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:03,639 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 (29)] Ended with exit code 0 [2023-12-24 12:54:03,838 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 12:54:03,839 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:54:03,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:54:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash -596515205, now seen corresponding path program 1 times [2023-12-24 12:54:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:54:03,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64544926] [2023-12-24 12:54:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:54:03,840 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 12:54:03,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:54:03,841 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 12:54:03,846 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 12:54:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:54:04,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:54:04,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:54:04,541 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 15 [2023-12-24 12:54:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 24 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-24 12:54:04,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:54:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:54:04,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:54:04,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64544926] [2023-12-24 12:54:04,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64544926] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:54:04,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:54:04,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-24 12:54:04,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088614524] [2023-12-24 12:54:04,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:54:04,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:54:04,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:54:04,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:54:04,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:54:04,712 INFO L87 Difference]: Start difference. First operand 466 states and 607 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:54:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:54:04,823 INFO L93 Difference]: Finished difference Result 888 states and 1172 transitions. [2023-12-24 12:54:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:54:04,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 127 [2023-12-24 12:54:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:54:04,825 INFO L225 Difference]: With dead ends: 888 [2023-12-24 12:54:04,825 INFO L226 Difference]: Without dead ends: 556 [2023-12-24 12:54:04,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 12:54:04,827 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 99 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:54:04,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 593 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:54:04,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2023-12-24 12:54:04,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 461. [2023-12-24 12:54:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 404 states have (on average 1.2524752475247525) internal successors, (506), 405 states have internal predecessors, (506), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 12:54:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 598 transitions. [2023-12-24 12:54:04,855 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 598 transitions. Word has length 127 [2023-12-24 12:54:04,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:54:04,855 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 598 transitions. [2023-12-24 12:54:04,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:54:04,856 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 598 transitions. [2023-12-24 12:54:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 12:54:04,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:54:04,856 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:04,872 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 12:54:05,071 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 12:54:05,071 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:54:05,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:54:05,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1708299069, now seen corresponding path program 1 times [2023-12-24 12:54:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:54:05,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502982865] [2023-12-24 12:54:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:54:05,072 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 12:54:05,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:54:05,073 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 12:54:05,074 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 12:54:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:54:05,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 12:54:05,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:54:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:54:05,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:54:05,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:54:05,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502982865] [2023-12-24 12:54:05,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502982865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:54:05,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:54:05,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:54:05,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505808822] [2023-12-24 12:54:05,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:54:05,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:54:05,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:54:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:54:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:54:05,509 INFO L87 Difference]: Start difference. First operand 461 states and 598 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:54:05,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:54:05,565 INFO L93 Difference]: Finished difference Result 961 states and 1251 transitions. [2023-12-24 12:54:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:54:05,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 127 [2023-12-24 12:54:05,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:54:05,567 INFO L225 Difference]: With dead ends: 961 [2023-12-24 12:54:05,567 INFO L226 Difference]: Without dead ends: 501 [2023-12-24 12:54:05,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 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 12:54:05,569 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 45 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 12:54:05,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 532 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 12:54:05,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-24 12:54:05,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 473. [2023-12-24 12:54:05,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 416 states have (on average 1.2451923076923077) internal successors, (518), 417 states have internal predecessors, (518), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 12:54:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 610 transitions. [2023-12-24 12:54:05,596 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 610 transitions. Word has length 127 [2023-12-24 12:54:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:54:05,596 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 610 transitions. [2023-12-24 12:54:05,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:54:05,597 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 610 transitions. [2023-12-24 12:54:05,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 12:54:05,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:54:05,597 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:05,612 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 (31)] Ended with exit code 0 [2023-12-24 12:54:05,812 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 12:54:05,812 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:54:05,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:54:05,813 INFO L85 PathProgramCache]: Analyzing trace with hash -410854920, now seen corresponding path program 1 times [2023-12-24 12:54:05,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:54:05,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523533696] [2023-12-24 12:54:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:54:05,813 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 12:54:05,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:54:05,814 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 12:54:05,815 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 12:54:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:54:06,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:54:06,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:54:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 24 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-24 12:54:06,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:54:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:54:06,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:54:06,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523533696] [2023-12-24 12:54:06,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523533696] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:54:06,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:54:06,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 12:54:06,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490478357] [2023-12-24 12:54:06,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:54:06,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:54:06,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:54:06,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:54:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:54:06,615 INFO L87 Difference]: Start difference. First operand 473 states and 610 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:54:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:54:06,748 INFO L93 Difference]: Finished difference Result 1040 states and 1343 transitions. [2023-12-24 12:54:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:54:06,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 129 [2023-12-24 12:54:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:54:06,751 INFO L225 Difference]: With dead ends: 1040 [2023-12-24 12:54:06,751 INFO L226 Difference]: Without dead ends: 568 [2023-12-24 12:54:06,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:54:06,752 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 83 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:54:06,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 532 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:54:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-12-24 12:54:06,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 476. [2023-12-24 12:54:06,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 419 states have (on average 1.2410501193317423) internal successors, (520), 420 states have internal predecessors, (520), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 12:54:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 612 transitions. [2023-12-24 12:54:06,779 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 612 transitions. Word has length 129 [2023-12-24 12:54:06,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:54:06,780 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 612 transitions. [2023-12-24 12:54:06,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:54:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 612 transitions. [2023-12-24 12:54:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 12:54:06,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:54:06,781 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:06,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 12:54:06,996 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 12:54:06,996 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:54:06,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:54:06,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1816724953, now seen corresponding path program 1 times [2023-12-24 12:54:06,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:54:06,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876054173] [2023-12-24 12:54:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:54:06,997 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 12:54:06,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:54:06,998 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 12:54:06,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 12:54:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:54:07,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 12:54:07,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:54:07,582 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 12:54:07,718 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 26 treesize of output 22 [2023-12-24 12:54:07,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2023-12-24 12:54:07,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2023-12-24 12:54:07,998 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 12:54:08,025 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 31 treesize of output 19 [2023-12-24 12:54:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 12:54:08,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:54:08,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:54:08,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876054173] [2023-12-24 12:54:08,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876054173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:54:08,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:54:08,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 12:54:08,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66472198] [2023-12-24 12:54:08,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:54:08,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 12:54:08,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:54:08,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 12:54:08,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:54:08,098 INFO L87 Difference]: Start difference. First operand 476 states and 612 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:54:09,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:54:09,456 INFO L93 Difference]: Finished difference Result 1170 states and 1523 transitions. [2023-12-24 12:54:09,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 12:54:09,456 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 131 [2023-12-24 12:54:09,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:54:09,459 INFO L225 Difference]: With dead ends: 1170 [2023-12-24 12:54:09,459 INFO L226 Difference]: Without dead ends: 841 [2023-12-24 12:54:09,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-24 12:54:09,460 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 347 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 12:54:09,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1375 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 12:54:09,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-12-24 12:54:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 746. [2023-12-24 12:54:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 659 states have (on average 1.2397572078907435) internal successors, (817), 663 states have internal predecessors, (817), 70 states have call successors, (70), 16 states have call predecessors, (70), 16 states have return successors, (70), 66 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-24 12:54:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 957 transitions. [2023-12-24 12:54:09,526 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 957 transitions. Word has length 131 [2023-12-24 12:54:09,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:54:09,526 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 957 transitions. [2023-12-24 12:54:09,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:54:09,526 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 957 transitions. [2023-12-24 12:54:09,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 12:54:09,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:54:09,527 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:09,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-24 12:54:09,732 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 12:54:09,732 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:54:09,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:54:09,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1007378327, now seen corresponding path program 1 times [2023-12-24 12:54:09,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:54:09,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251829281] [2023-12-24 12:54:09,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:54:09,733 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 12:54:09,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:54:09,734 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 12:54:09,735 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 12:54:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:54:10,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:54:10,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:54:10,298 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 12:54:10,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-24 12:54:10,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 12:54:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 12:54:10,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:54:10,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:54:10,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251829281] [2023-12-24 12:54:10,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251829281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:54:10,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:54:10,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 12:54:10,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744614357] [2023-12-24 12:54:10,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:54:10,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:54:10,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:54:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:54:10,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 12:54:10,515 INFO L87 Difference]: Start difference. First operand 746 states and 957 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:54:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:54:10,888 INFO L93 Difference]: Finished difference Result 1332 states and 1724 transitions. [2023-12-24 12:54:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:54:10,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 131 [2023-12-24 12:54:10,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:54:10,891 INFO L225 Difference]: With dead ends: 1332 [2023-12-24 12:54:10,891 INFO L226 Difference]: Without dead ends: 806 [2023-12-24 12:54:10,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-24 12:54:10,892 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 239 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 12:54:10,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 743 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 12:54:10,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2023-12-24 12:54:10,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 738. [2023-12-24 12:54:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 651 states have (on average 1.2365591397849462) internal successors, (805), 655 states have internal predecessors, (805), 70 states have call successors, (70), 16 states have call predecessors, (70), 16 states have return successors, (70), 66 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-24 12:54:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 945 transitions. [2023-12-24 12:54:10,943 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 945 transitions. Word has length 131 [2023-12-24 12:54:10,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:54:10,944 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 945 transitions. [2023-12-24 12:54:10,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:54:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 945 transitions. [2023-12-24 12:54:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 12:54:10,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:54:10,945 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:10,964 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 12:54:11,160 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 12:54:11,161 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:54:11,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:54:11,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2091484567, now seen corresponding path program 1 times [2023-12-24 12:54:11,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:54:11,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281566364] [2023-12-24 12:54:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:54:11,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:54:11,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:54:11,163 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 12:54:11,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 12:54:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:54:11,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:54:11,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:54:11,806 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 12:54:11,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2023-12-24 12:54:12,008 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 12:54:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 12:54:12,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:54:12,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:54:12,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281566364] [2023-12-24 12:54:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281566364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:54:12,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:54:12,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 12:54:12,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938693013] [2023-12-24 12:54:12,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:54:12,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:54:12,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:54:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:54:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 12:54:12,032 INFO L87 Difference]: Start difference. First operand 738 states and 945 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:54:12,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:54:12,338 INFO L93 Difference]: Finished difference Result 1451 states and 1871 transitions. [2023-12-24 12:54:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:54:12,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 131 [2023-12-24 12:54:12,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:54:12,341 INFO L225 Difference]: With dead ends: 1451 [2023-12-24 12:54:12,341 INFO L226 Difference]: Without dead ends: 933 [2023-12-24 12:54:12,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-24 12:54:12,342 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 264 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 12:54:12,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 600 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 12:54:12,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-12-24 12:54:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 730. [2023-12-24 12:54:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 642 states have (on average 1.2289719626168225) internal successors, (789), 646 states have internal predecessors, (789), 70 states have call successors, (70), 17 states have call predecessors, (70), 17 states have return successors, (70), 66 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-24 12:54:12,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 929 transitions. [2023-12-24 12:54:12,397 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 929 transitions. Word has length 131 [2023-12-24 12:54:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:54:12,397 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 929 transitions. [2023-12-24 12:54:12,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:54:12,397 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 929 transitions. [2023-12-24 12:54:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 12:54:12,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:54:12,398 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:12,416 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 12:54:12,613 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 12:54:12,613 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:54:12,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:54:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1282137941, now seen corresponding path program 1 times [2023-12-24 12:54:12,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:54:12,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681844777] [2023-12-24 12:54:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:54:12,614 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 12:54:12,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:54:12,615 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 12:54:12,617 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 12:54:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:54:13,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 12:54:13,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:54:13,191 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 12:54:13,320 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 25 treesize of output 21 [2023-12-24 12:54:13,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2023-12-24 12:54:13,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 12:54:13,626 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 23 treesize of output 15 [2023-12-24 12:54:13,652 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 29 treesize of output 17 [2023-12-24 12:54:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 12:54:13,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:54:13,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:54:13,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681844777] [2023-12-24 12:54:13,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681844777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:54:13,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:54:13,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 12:54:13,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819337451] [2023-12-24 12:54:13,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:54:13,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 12:54:13,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:54:13,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 12:54:13,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:54:13,718 INFO L87 Difference]: Start difference. First operand 730 states and 929 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:54:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:54:15,049 INFO L93 Difference]: Finished difference Result 1502 states and 1933 transitions. [2023-12-24 12:54:15,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 12:54:15,056 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 131 [2023-12-24 12:54:15,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:54:15,060 INFO L225 Difference]: With dead ends: 1502 [2023-12-24 12:54:15,060 INFO L226 Difference]: Without dead ends: 990 [2023-12-24 12:54:15,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2023-12-24 12:54:15,061 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 303 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 12:54:15,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1618 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 12:54:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-12-24 12:54:15,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 722. [2023-12-24 12:54:15,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 634 states have (on average 1.2302839116719242) internal successors, (780), 638 states have internal predecessors, (780), 70 states have call successors, (70), 17 states have call predecessors, (70), 17 states have return successors, (70), 66 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-24 12:54:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 920 transitions. [2023-12-24 12:54:15,119 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 920 transitions. Word has length 131 [2023-12-24 12:54:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:54:15,119 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 920 transitions. [2023-12-24 12:54:15,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:54:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 920 transitions. [2023-12-24 12:54:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 12:54:15,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:54:15,120 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:15,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-24 12:54:15,335 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 12:54:15,335 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:54:15,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:54:15,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2033469882, now seen corresponding path program 1 times [2023-12-24 12:54:15,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:54:15,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257493679] [2023-12-24 12:54:15,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:54:15,337 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 12:54:15,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:54:15,339 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:54:15,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process Received shutdown request... [2023-12-24 13:07:38,174 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 13:07:38,174 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 13:07:39,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-24 13:07:39,375 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forcibly destroying the process [2023-12-24 13:07:39,448 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-24 13:07:39,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 137 [2023-12-24 13:07:39,449 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 13:07:39,450 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 132 with TraceHistMax 12,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [257493679] and IpTcStrategyModuleCvc4 [1952623471]. [2023-12-24 13:07:39,453 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:07:39,455 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 13:07:39,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 01:07:39 BoogieIcfgContainer [2023-12-24 13:07:39,463 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 13:07:39,464 INFO L158 Benchmark]: Toolchain (without parser) took 872879.22ms. Allocated memory was 212.9MB in the beginning and 437.3MB in the end (delta: 224.4MB). Free memory was 161.0MB in the beginning and 230.5MB in the end (delta: -69.5MB). Peak memory consumption was 156.3MB. Max. memory is 8.0GB. [2023-12-24 13:07:39,464 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 212.9MB. Free memory is still 160.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 13:07:39,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.77ms. Allocated memory is still 212.9MB. Free memory was 160.6MB in the beginning and 144.6MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 13:07:39,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.30ms. Allocated memory is still 212.9MB. Free memory was 144.6MB in the beginning and 140.7MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 13:07:39,471 INFO L158 Benchmark]: Boogie Preprocessor took 93.88ms. Allocated memory is still 212.9MB. Free memory was 140.7MB in the beginning and 135.1MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 13:07:39,471 INFO L158 Benchmark]: RCFGBuilder took 2160.81ms. Allocated memory was 212.9MB in the beginning and 363.9MB in the end (delta: 151.0MB). Free memory was 134.8MB in the beginning and 296.5MB in the end (delta: -161.8MB). Peak memory consumption was 19.5MB. Max. memory is 8.0GB. [2023-12-24 13:07:39,471 INFO L158 Benchmark]: TraceAbstraction took 870261.45ms. Allocated memory was 363.9MB in the beginning and 437.3MB in the end (delta: 73.4MB). Free memory was 296.0MB in the beginning and 230.5MB in the end (delta: 65.5MB). Peak memory consumption was 140.0MB. Max. memory is 8.0GB. [2023-12-24 13:07:39,472 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 212.9MB. Free memory is still 160.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 290.77ms. Allocated memory is still 212.9MB. Free memory was 160.6MB in the beginning and 144.6MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.30ms. Allocated memory is still 212.9MB. Free memory was 144.6MB in the beginning and 140.7MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 93.88ms. Allocated memory is still 212.9MB. Free memory was 140.7MB in the beginning and 135.1MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 2160.81ms. Allocated memory was 212.9MB in the beginning and 363.9MB in the end (delta: 151.0MB). Free memory was 134.8MB in the beginning and 296.5MB in the end (delta: -161.8MB). Peak memory consumption was 19.5MB. Max. memory is 8.0GB. * TraceAbstraction took 870261.45ms. Allocated memory was 363.9MB in the beginning and 437.3MB in the end (delta: 73.4MB). Free memory was 296.0MB in the beginning and 230.5MB in the end (delta: 65.5MB). Peak memory consumption was 140.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 132 with TraceHistMax 12,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [257493679] and IpTcStrategyModuleCvc4 [1952623471]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 106 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 870.2s, OverallIterations: 36, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 26.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7191 SdHoareTripleChecker+Valid, 21.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7136 mSDsluCounter, 30485 SdHoareTripleChecker+Invalid, 19.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24440 mSDsCounter, 481 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8812 IncrementalHoareTripleChecker+Invalid, 9293 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 481 mSolverCounterUnsat, 6045 mSDtfsCounter, 8812 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5498 GetRequests, 5041 SyntacticMatches, 5 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=746occurred in iteration=32, InterpolantAutomatonStates: 368, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 35 MinimizatonAttempts, 2313 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 10.8s SatisfiabilityAnalysisTime, 15.9s InterpolantComputationTime, 4188 NumberOfCodeBlocks, 4188 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 5314 ConstructedInterpolants, 256 QuantifiedInterpolants, 35239 SizeOfPredicates, 279 NumberOfNonLiveVariables, 10182 ConjunctsInSsa, 382 ConjunctsInUnsatCore, 45 InterpolantComputations, 34 PerfectInterpolantSequences, 11625/11880 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown