/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-33.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 15:37:29,859 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 15:37:29,933 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 15:37:29,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 15:37:29,939 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 15:37:29,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 15:37:29,973 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 15:37:29,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 15:37:29,974 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 15:37:29,978 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 15:37:29,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 15:37:29,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 15:37:29,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 15:37:29,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 15:37:29,985 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 15:37:29,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 15:37:29,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 15:37:29,986 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 15:37:29,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 15:37:29,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 15:37:29,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 15:37:29,987 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 15:37:29,987 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 15:37:29,987 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 15:37:29,987 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 15:37:29,988 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 15:37:29,988 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 15:37:29,988 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 15:37:29,988 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 15:37:29,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 15:37:29,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 15:37:29,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 15:37:29,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 15:37:29,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 15:37:29,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:37:29,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 15:37:29,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 15:37:29,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 15:37:29,990 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 15:37:29,991 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 15:37:29,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 15:37:29,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 15:37:29,991 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 15:37:29,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 15:37:29,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 15:37:29,992 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 15:37:29,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 15:37:30,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 15:37:30,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 15:37:30,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 15:37:30,193 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 15:37:30,193 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 15:37:30,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-33.i [2023-12-16 15:37:31,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 15:37:31,542 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 15:37:31,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-33.i [2023-12-16 15:37:31,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4d56488/4a6c5c4fd8d84bac892b0dd92585929b/FLAG5520c27d0 [2023-12-16 15:37:31,575 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4d56488/4a6c5c4fd8d84bac892b0dd92585929b [2023-12-16 15:37:31,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 15:37:31,578 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 15:37:31,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 15:37:31,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 15:37:31,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 15:37:31,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:31,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9869134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31, skipping insertion in model container [2023-12-16 15:37:31,586 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:31,622 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 15:37:31,749 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-33.i[917,930] [2023-12-16 15:37:31,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:37:31,822 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 15:37:31,833 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-33.i[917,930] [2023-12-16 15:37:31,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:37:31,890 INFO L206 MainTranslator]: Completed translation [2023-12-16 15:37:31,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31 WrapperNode [2023-12-16 15:37:31,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 15:37:31,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 15:37:31,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 15:37:31,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 15:37:31,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:31,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:31,944 INFO L138 Inliner]: procedures = 36, calls = 140, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 426 [2023-12-16 15:37:31,944 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 15:37:31,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 15:37:31,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 15:37:31,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 15:37:31,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:31,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:31,964 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:31,985 INFO L175 MemorySlicer]: Split 115 memory accesses to 6 slices as follows [2, 6, 44, 21, 11, 31]. 38 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 1, 5, 2, 2, 2]. The 15 writes are split as follows [0, 1, 5, 4, 3, 2]. [2023-12-16 15:37:31,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:31,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:32,016 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:32,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:32,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:32,027 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:32,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 15:37:32,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 15:37:32,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 15:37:32,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 15:37:32,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (1/1) ... [2023-12-16 15:37:32,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:37:32,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 15:37:32,081 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) [2023-12-16 15:37:32,134 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 [2023-12-16 15:37:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 15:37:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-16 15:37:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-16 15:37:32,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-16 15:37:32,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-16 15:37:32,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-16 15:37:32,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-16 15:37:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-16 15:37:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-16 15:37:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-16 15:37:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-16 15:37:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-16 15:37:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-16 15:37:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 15:37:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 15:37:32,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 15:37:32,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 15:37:32,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-16 15:37:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-16 15:37:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-16 15:37:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-16 15:37:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-16 15:37:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-16 15:37:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-16 15:37:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-16 15:37:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-16 15:37:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-16 15:37:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-16 15:37:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-16 15:37:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-16 15:37:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-16 15:37:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 15:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 15:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 15:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-16 15:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-16 15:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-16 15:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-16 15:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-16 15:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-16 15:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-16 15:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-16 15:37:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-16 15:37:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-16 15:37:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-16 15:37:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-16 15:37:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-16 15:37:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-16 15:37:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-16 15:37:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-16 15:37:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-16 15:37:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-16 15:37:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-16 15:37:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-16 15:37:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-16 15:37:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 15:37:32,153 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 15:37:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 15:37:32,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 15:37:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-16 15:37:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-16 15:37:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-16 15:37:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-16 15:37:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-16 15:37:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-16 15:37:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-16 15:37:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-16 15:37:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-16 15:37:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-16 15:37:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-16 15:37:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-16 15:37:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 15:37:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 15:37:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 15:37:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-16 15:37:32,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-16 15:37:32,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-16 15:37:32,342 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 15:37:32,344 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 15:37:34,556 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 15:37:34,614 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 15:37:34,615 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 15:37:34,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:37:34 BoogieIcfgContainer [2023-12-16 15:37:34,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 15:37:34,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 15:37:34,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 15:37:34,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 15:37:34,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:37:31" (1/3) ... [2023-12-16 15:37:34,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdce22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:37:34, skipping insertion in model container [2023-12-16 15:37:34,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:37:31" (2/3) ... [2023-12-16 15:37:34,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdce22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:37:34, skipping insertion in model container [2023-12-16 15:37:34,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:37:34" (3/3) ... [2023-12-16 15:37:34,622 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-33.i [2023-12-16 15:37:34,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 15:37:34,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 15:37:34,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 15:37:34,681 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;@648193ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 15:37:34,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 15:37:34,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 67 states have internal predecessors, (97), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 15:37:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-16 15:37:34,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:37:34,694 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:37:34,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:37:34,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:37:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash 629413463, now seen corresponding path program 1 times [2023-12-16 15:37:34,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:37:34,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127339292] [2023-12-16 15:37:34,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:37:34,712 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 [2023-12-16 15:37:34,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:37:34,714 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) [2023-12-16 15:37:34,731 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 [2023-12-16 15:37:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:37:35,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 15:37:35,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:37:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-16 15:37:35,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:37:35,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:37:35,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127339292] [2023-12-16 15:37:35,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127339292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:37:35,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:37:35,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 15:37:35,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407991886] [2023-12-16 15:37:35,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:37:35,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 15:37:35,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:37:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 15:37:35,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:37:35,145 INFO L87 Difference]: Start difference. First operand has 78 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 67 states have internal predecessors, (97), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 15:37:35,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:37:35,211 INFO L93 Difference]: Finished difference Result 153 states and 237 transitions. [2023-12-16 15:37:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 15:37:35,214 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2023-12-16 15:37:35,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:37:35,221 INFO L225 Difference]: With dead ends: 153 [2023-12-16 15:37:35,221 INFO L226 Difference]: Without dead ends: 76 [2023-12-16 15:37:35,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:37:35,229 INFO L413 NwaCegarLoop]: 106 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, 106 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 [2023-12-16 15:37:35,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:37:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-16 15:37:35,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-16 15:37:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 65 states have internal predecessors, (92), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 15:37:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 110 transitions. [2023-12-16 15:37:35,278 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 110 transitions. Word has length 87 [2023-12-16 15:37:35,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:37:35,279 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 110 transitions. [2023-12-16 15:37:35,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 15:37:35,280 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 110 transitions. [2023-12-16 15:37:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-16 15:37:35,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:37:35,288 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:37:35,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 15:37:35,496 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 [2023-12-16 15:37:35,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:37:35,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:37:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash 272947025, now seen corresponding path program 1 times [2023-12-16 15:37:35,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:37:35,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558460436] [2023-12-16 15:37:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:37:35,499 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 [2023-12-16 15:37:35,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:37:35,500 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) [2023-12-16 15:37:35,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 15:37:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:37:35,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 15:37:35,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:37:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-16 15:37:35,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:37:35,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:37:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558460436] [2023-12-16 15:37:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558460436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:37:35,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:37:35,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 15:37:35,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641031322] [2023-12-16 15:37:35,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:37:35,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:37:35,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:37:35,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:37:35,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 15:37:35,853 INFO L87 Difference]: Start difference. First operand 76 states and 110 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 15:37:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:37:35,938 INFO L93 Difference]: Finished difference Result 157 states and 228 transitions. [2023-12-16 15:37:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:37:35,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2023-12-16 15:37:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:37:35,940 INFO L225 Difference]: With dead ends: 157 [2023-12-16 15:37:35,940 INFO L226 Difference]: Without dead ends: 82 [2023-12-16 15:37:35,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:37:35,942 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 10 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 310 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 [2023-12-16 15:37:35,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 310 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:37:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-16 15:37:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2023-12-16 15:37:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 67 states have internal predecessors, (94), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 15:37:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 112 transitions. [2023-12-16 15:37:35,953 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 112 transitions. Word has length 87 [2023-12-16 15:37:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:37:35,953 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 112 transitions. [2023-12-16 15:37:35,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 15:37:35,953 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 112 transitions. [2023-12-16 15:37:35,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-16 15:37:35,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:37:35,955 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:37:35,968 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 [2023-12-16 15:37:36,164 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 [2023-12-16 15:37:36,165 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:37:36,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:37:36,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2110977713, now seen corresponding path program 1 times [2023-12-16 15:37:36,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:37:36,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256701162] [2023-12-16 15:37:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:37:36,167 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 [2023-12-16 15:37:36,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:37:36,169 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) [2023-12-16 15:37:36,170 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 (4)] Waiting until timeout for monitored process [2023-12-16 15:37:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:37:36,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 15:37:36,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:37:37,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-16 15:37:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-16 15:37:37,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:37:37,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:37:37,871 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 21 treesize of output 24 [2023-12-16 15:37:38,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:37:38,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256701162] [2023-12-16 15:37:38,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256701162] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:37:38,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [102275095] [2023-12-16 15:37:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:37:38,032 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:37:38,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:37:38,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:37:38,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 15:37:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:37:38,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 15:37:38,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:37:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-16 15:37:38,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:37:38,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [102275095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:37:38,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:37:38,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2023-12-16 15:37:38,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479731542] [2023-12-16 15:37:38,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:37:38,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:37:38,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:37:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:37:38,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-12-16 15:37:38,602 INFO L87 Difference]: Start difference. First operand 78 states and 112 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:37:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:37:38,832 INFO L93 Difference]: Finished difference Result 179 states and 257 transitions. [2023-12-16 15:37:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 15:37:38,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 87 [2023-12-16 15:37:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:37:38,835 INFO L225 Difference]: With dead ends: 179 [2023-12-16 15:37:38,835 INFO L226 Difference]: Without dead ends: 102 [2023-12-16 15:37:38,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2023-12-16 15:37:38,837 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 53 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:37:38,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 488 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:37:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-16 15:37:38,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 84. [2023-12-16 15:37:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 1.36986301369863) internal successors, (100), 73 states have internal predecessors, (100), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 15:37:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2023-12-16 15:37:38,845 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 87 [2023-12-16 15:37:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:37:38,845 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2023-12-16 15:37:38,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:37:38,846 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2023-12-16 15:37:38,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-16 15:37:38,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:37:38,847 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:37:38,859 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 [2023-12-16 15:37:39,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-16 15:37:39,256 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 15:37:39,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:37:39,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:37:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2053719411, now seen corresponding path program 1 times [2023-12-16 15:37:39,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:37:39,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056983947] [2023-12-16 15:37:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:37:39,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:37:39,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:37:39,259 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) [2023-12-16 15:37:39,263 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 [2023-12-16 15:37:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:37:39,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 15:37:39,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:37:40,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-16 15:37:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-16 15:37:42,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:37:42,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:37:42,863 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 21 treesize of output 24 [2023-12-16 15:37:43,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:37:43,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056983947] [2023-12-16 15:37:43,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056983947] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:37:43,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [430347347] [2023-12-16 15:37:43,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:37:43,017 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:37:43,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:37:43,020 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:37:43,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-16 15:37:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:37:43,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 15:37:43,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:37:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-16 15:37:43,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:37:43,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [430347347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:37:43,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:37:43,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2023-12-16 15:37:43,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798634474] [2023-12-16 15:37:43,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:37:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:37:43,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:37:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:37:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=360, Unknown=1, NotChecked=0, Total=420 [2023-12-16 15:37:43,527 INFO L87 Difference]: Start difference. First operand 84 states and 118 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:37:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:37:43,812 INFO L93 Difference]: Finished difference Result 186 states and 258 transitions. [2023-12-16 15:37:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 15:37:43,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 87 [2023-12-16 15:37:43,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:37:43,814 INFO L225 Difference]: With dead ends: 186 [2023-12-16 15:37:43,814 INFO L226 Difference]: Without dead ends: 103 [2023-12-16 15:37:43,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=134, Invalid=795, Unknown=1, NotChecked=0, Total=930 [2023-12-16 15:37:43,815 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 43 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:37:43,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 579 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:37:43,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-16 15:37:43,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 86. [2023-12-16 15:37:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 75 states have (on average 1.36) internal successors, (102), 75 states have internal predecessors, (102), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 15:37:43,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2023-12-16 15:37:43,823 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 87 [2023-12-16 15:37:43,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:37:43,823 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2023-12-16 15:37:43,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:37:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2023-12-16 15:37:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-16 15:37:43,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:37:43,825 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:37:43,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-16 15:37:44,031 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 [2023-12-16 15:37:44,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-16 15:37:44,226 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:37:44,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:37:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2053659829, now seen corresponding path program 1 times [2023-12-16 15:37:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:37:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315872379] [2023-12-16 15:37:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:37:44,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:37:44,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:37:44,228 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) [2023-12-16 15:37:44,255 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 [2023-12-16 15:37:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:37:44,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 15:37:44,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:37:45,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-16 15:37:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-16 15:37:45,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:37:46,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:37:46,122 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 21 treesize of output 24 [2023-12-16 15:37:46,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:37:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315872379] [2023-12-16 15:37:46,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315872379] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:37:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2102511284] [2023-12-16 15:37:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:37:46,258 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:37:46,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:37:46,258 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:37:46,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-16 15:37:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:37:46,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 15:37:46,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:37:46,814 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 [2023-12-16 15:37:46,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-16 15:37:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-16 15:37:46,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:37:46,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2102511284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:37:46,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:37:46,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-16 15:37:46,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402661784] [2023-12-16 15:37:46,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:37:46,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:37:46,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:37:46,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:37:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:37:46,902 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:37:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:37:47,043 INFO L93 Difference]: Finished difference Result 269 states and 373 transitions. [2023-12-16 15:37:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 15:37:47,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 87 [2023-12-16 15:37:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:37:47,045 INFO L225 Difference]: With dead ends: 269 [2023-12-16 15:37:47,046 INFO L226 Difference]: Without dead ends: 184 [2023-12-16 15:37:47,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-12-16 15:37:47,047 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 140 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:37:47,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 536 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:37:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-16 15:37:47,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 156. [2023-12-16 15:37:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 139 states have (on average 1.3597122302158273) internal successors, (189), 140 states have internal predecessors, (189), 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) [2023-12-16 15:37:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 217 transitions. [2023-12-16 15:37:47,058 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 217 transitions. Word has length 87 [2023-12-16 15:37:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:37:47,058 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 217 transitions. [2023-12-16 15:37:47,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:37:47,058 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 217 transitions. [2023-12-16 15:37:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-16 15:37:47,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:37:47,060 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:37:47,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-16 15:37:47,272 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 [2023-12-16 15:37:47,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-16 15:37:47,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:37:47,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:37:47,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1230190217, now seen corresponding path program 1 times [2023-12-16 15:37:47,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:37:47,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27010672] [2023-12-16 15:37:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:37:47,467 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 [2023-12-16 15:37:47,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:37:47,468 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) [2023-12-16 15:37:47,470 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 [2023-12-16 15:37:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:37:47,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 15:37:47,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:37:48,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-16 15:37:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-16 15:37:48,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:37:48,829 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:37:48,829 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 21 treesize of output 24 [2023-12-16 15:37:48,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:37:48,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27010672] [2023-12-16 15:37:48,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27010672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:37:48,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [545272329] [2023-12-16 15:37:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:37:48,927 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:37:48,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:37:48,932 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:37:48,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-16 15:37:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:37:49,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 15:37:49,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:37:49,968 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 [2023-12-16 15:37:50,545 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 [2023-12-16 15:37:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-16 15:37:50,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:37:50,667 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 35 treesize of output 31 [2023-12-16 15:37:50,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [545272329] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:37:50,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:37:50,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-16 15:37:50,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246679328] [2023-12-16 15:37:50,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:37:50,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 15:37:50,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:37:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 15:37:50,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-12-16 15:37:50,798 INFO L87 Difference]: Start difference. First operand 156 states and 217 transitions. Second operand has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 14 states have internal predecessors, (80), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-16 15:37:53,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 15:38:00,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 15:38:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:01,497 INFO L93 Difference]: Finished difference Result 445 states and 613 transitions. [2023-12-16 15:38:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 15:38:01,498 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 14 states have internal predecessors, (80), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) Word has length 87 [2023-12-16 15:38:01,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:01,500 INFO L225 Difference]: With dead ends: 445 [2023-12-16 15:38:01,501 INFO L226 Difference]: Without dead ends: 290 [2023-12-16 15:38:01,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 245 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=296, Invalid=894, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 15:38:01,502 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 370 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 58 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-16 15:38:01,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1171 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2023-12-16 15:38:01,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-16 15:38:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 201. [2023-12-16 15:38:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 173 states have (on average 1.3410404624277457) internal successors, (232), 174 states have internal predecessors, (232), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-16 15:38:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2023-12-16 15:38:01,520 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 278 transitions. Word has length 87 [2023-12-16 15:38:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:01,520 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 278 transitions. [2023-12-16 15:38:01,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 14 states have internal predecessors, (80), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-16 15:38:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 278 transitions. [2023-12-16 15:38:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-16 15:38:01,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:01,521 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:01,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-16 15:38:01,734 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 [2023-12-16 15:38:01,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-16 15:38:01,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:01,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:01,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1449044935, now seen corresponding path program 1 times [2023-12-16 15:38:01,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:01,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606193552] [2023-12-16 15:38:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:01,929 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 [2023-12-16 15:38:01,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:01,930 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) [2023-12-16 15:38:01,932 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 [2023-12-16 15:38:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:02,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:38:02,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:02,236 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 77 treesize of output 41 [2023-12-16 15:38:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-16 15:38:02,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:38:02,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:02,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606193552] [2023-12-16 15:38:02,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606193552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:38:02,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:38:02,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:38:02,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934233321] [2023-12-16 15:38:02,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:38:02,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:38:02,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:38:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:38:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:38:02,260 INFO L87 Difference]: Start difference. First operand 201 states and 278 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 15:38:05,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:05,633 INFO L93 Difference]: Finished difference Result 401 states and 556 transitions. [2023-12-16 15:38:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:38:05,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2023-12-16 15:38:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:05,635 INFO L225 Difference]: With dead ends: 401 [2023-12-16 15:38:05,635 INFO L226 Difference]: Without dead ends: 213 [2023-12-16 15:38:05,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-16 15:38:05,636 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 119 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-16 15:38:05,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 323 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-16 15:38:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-16 15:38:05,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 195. [2023-12-16 15:38:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 167 states have (on average 1.3353293413173652) internal successors, (223), 168 states have internal predecessors, (223), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-16 15:38:05,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 269 transitions. [2023-12-16 15:38:05,649 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 269 transitions. Word has length 87 [2023-12-16 15:38:05,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:05,650 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 269 transitions. [2023-12-16 15:38:05,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 15:38:05,650 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 269 transitions. [2023-12-16 15:38:05,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-16 15:38:05,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:05,651 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:05,659 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 [2023-12-16 15:38:05,858 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 [2023-12-16 15:38:05,858 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:05,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:05,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1809835151, now seen corresponding path program 1 times [2023-12-16 15:38:05,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:05,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350936225] [2023-12-16 15:38:05,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:05,859 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 [2023-12-16 15:38:05,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:05,860 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) [2023-12-16 15:38:05,870 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 [2023-12-16 15:38:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:06,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 15:38:06,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:06,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 40 [2023-12-16 15:38:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-16 15:38:06,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:38:06,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-16 15:38:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-16 15:38:06,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:06,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350936225] [2023-12-16 15:38:06,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350936225] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:38:06,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:38:06,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-16 15:38:06,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127482558] [2023-12-16 15:38:06,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:38:06,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 15:38:06,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:38:06,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 15:38:06,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:38:06,452 INFO L87 Difference]: Start difference. First operand 195 states and 269 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-16 15:38:09,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 15:38:10,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:10,684 INFO L93 Difference]: Finished difference Result 417 states and 566 transitions. [2023-12-16 15:38:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 15:38:10,685 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 89 [2023-12-16 15:38:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:10,686 INFO L225 Difference]: With dead ends: 417 [2023-12-16 15:38:10,686 INFO L226 Difference]: Without dead ends: 201 [2023-12-16 15:38:10,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-12-16 15:38:10,687 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 116 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:38:10,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 688 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-16 15:38:10,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-16 15:38:10,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2023-12-16 15:38:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 167 states have (on average 1.2994011976047903) internal successors, (217), 168 states have internal predecessors, (217), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-16 15:38:10,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 263 transitions. [2023-12-16 15:38:10,701 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 263 transitions. Word has length 89 [2023-12-16 15:38:10,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:10,701 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 263 transitions. [2023-12-16 15:38:10,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-16 15:38:10,701 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 263 transitions. [2023-12-16 15:38:10,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-16 15:38:10,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:10,702 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:10,713 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 [2023-12-16 15:38:10,903 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 [2023-12-16 15:38:10,903 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:10,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:10,903 INFO L85 PathProgramCache]: Analyzing trace with hash 75730701, now seen corresponding path program 1 times [2023-12-16 15:38:10,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:10,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798288957] [2023-12-16 15:38:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:10,904 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 [2023-12-16 15:38:10,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:10,905 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) [2023-12-16 15:38:10,906 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 [2023-12-16 15:38:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:11,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:38:11,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:11,216 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 95 treesize of output 41 [2023-12-16 15:38:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-16 15:38:11,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:38:11,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:11,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798288957] [2023-12-16 15:38:11,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798288957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:38:11,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:38:11,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:38:11,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587687016] [2023-12-16 15:38:11,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:38:11,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:38:11,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:38:11,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:38:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:38:11,238 INFO L87 Difference]: Start difference. First operand 195 states and 263 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 15:38:13,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 15:38:15,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:15,086 INFO L93 Difference]: Finished difference Result 382 states and 517 transitions. [2023-12-16 15:38:15,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:38:15,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2023-12-16 15:38:15,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:15,088 INFO L225 Difference]: With dead ends: 382 [2023-12-16 15:38:15,088 INFO L226 Difference]: Without dead ends: 212 [2023-12-16 15:38:15,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-16 15:38:15,089 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 94 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-16 15:38:15,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 313 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-16 15:38:15,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-16 15:38:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 195. [2023-12-16 15:38:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 167 states have (on average 1.281437125748503) internal successors, (214), 168 states have internal predecessors, (214), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-16 15:38:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 260 transitions. [2023-12-16 15:38:15,104 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 260 transitions. Word has length 89 [2023-12-16 15:38:15,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:15,105 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 260 transitions. [2023-12-16 15:38:15,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 15:38:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 260 transitions. [2023-12-16 15:38:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 15:38:15,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:15,106 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:15,118 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 (14)] Forceful destruction successful, exit code 0 [2023-12-16 15:38:15,314 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 [2023-12-16 15:38:15,315 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:15,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:15,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1451173165, now seen corresponding path program 1 times [2023-12-16 15:38:15,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:15,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542241106] [2023-12-16 15:38:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:15,316 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 [2023-12-16 15:38:15,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:15,317 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) [2023-12-16 15:38:15,320 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 [2023-12-16 15:38:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:15,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 15:38:15,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:15,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-16 15:38:16,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:38:16,249 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 52 treesize of output 48 [2023-12-16 15:38:16,272 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-16 15:38:16,272 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 41 treesize of output 30 [2023-12-16 15:38:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:38:16,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:38:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-16 15:38:16,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:16,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542241106] [2023-12-16 15:38:16,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542241106] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:38:16,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:38:16,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-16 15:38:16,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45653096] [2023-12-16 15:38:16,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:38:16,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:38:16,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:38:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:38:16,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-16 15:38:16,569 INFO L87 Difference]: Start difference. First operand 195 states and 260 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:16,825 INFO L93 Difference]: Finished difference Result 386 states and 512 transitions. [2023-12-16 15:38:16,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:38:16,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 91 [2023-12-16 15:38:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:16,827 INFO L225 Difference]: With dead ends: 386 [2023-12-16 15:38:16,827 INFO L226 Difference]: Without dead ends: 235 [2023-12-16 15:38:16,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-16 15:38:16,828 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 213 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:38:16,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 281 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:38:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-16 15:38:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 203. [2023-12-16 15:38:16,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 171 states have (on average 1.263157894736842) internal successors, (216), 172 states have internal predecessors, (216), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-16 15:38:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 266 transitions. [2023-12-16 15:38:16,842 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 266 transitions. Word has length 91 [2023-12-16 15:38:16,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:16,842 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 266 transitions. [2023-12-16 15:38:16,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 266 transitions. [2023-12-16 15:38:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 15:38:16,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:16,844 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:16,852 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 [2023-12-16 15:38:17,052 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 [2023-12-16 15:38:17,052 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:17,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:17,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1860766675, now seen corresponding path program 1 times [2023-12-16 15:38:17,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:17,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37261923] [2023-12-16 15:38:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:17,053 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 [2023-12-16 15:38:17,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:17,054 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) [2023-12-16 15:38:17,055 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 [2023-12-16 15:38:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:17,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 15:38:17,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:17,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-16 15:38:17,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:38:17,778 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 53 treesize of output 49 [2023-12-16 15:38:17,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:38:17,799 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 42 treesize of output 34 [2023-12-16 15:38:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:38:17,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:38:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-16 15:38:18,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:18,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37261923] [2023-12-16 15:38:18,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37261923] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:38:18,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:38:18,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-16 15:38:18,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971400192] [2023-12-16 15:38:18,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:38:18,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:38:18,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:38:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:38:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-16 15:38:18,099 INFO L87 Difference]: Start difference. First operand 203 states and 266 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:18,304 INFO L93 Difference]: Finished difference Result 365 states and 478 transitions. [2023-12-16 15:38:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:38:18,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 91 [2023-12-16 15:38:18,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:18,305 INFO L225 Difference]: With dead ends: 365 [2023-12-16 15:38:18,305 INFO L226 Difference]: Without dead ends: 210 [2023-12-16 15:38:18,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-16 15:38:18,306 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 123 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:38:18,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 457 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:38:18,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-16 15:38:18,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2023-12-16 15:38:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 174 states have (on average 1.2528735632183907) internal successors, (218), 175 states have internal predecessors, (218), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-16 15:38:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 268 transitions. [2023-12-16 15:38:18,322 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 268 transitions. Word has length 91 [2023-12-16 15:38:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:18,323 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 268 transitions. [2023-12-16 15:38:18,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:18,323 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 268 transitions. [2023-12-16 15:38:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 15:38:18,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:18,324 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:18,337 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 [2023-12-16 15:38:18,532 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 [2023-12-16 15:38:18,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:18,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash 849649425, now seen corresponding path program 1 times [2023-12-16 15:38:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:18,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962275282] [2023-12-16 15:38:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:18,534 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 [2023-12-16 15:38:18,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:18,535 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) [2023-12-16 15:38:18,535 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 [2023-12-16 15:38:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:18,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:38:18,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:18,833 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 24 treesize of output 20 [2023-12-16 15:38:18,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 63 [2023-12-16 15:38:18,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-12-16 15:38:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-16 15:38:18,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:38:18,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:18,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962275282] [2023-12-16 15:38:18,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962275282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:38:18,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:38:18,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:38:18,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200741591] [2023-12-16 15:38:18,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:38:18,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:38:18,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:38:18,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:38:18,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:38:18,956 INFO L87 Difference]: Start difference. First operand 207 states and 268 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:19,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:19,245 INFO L93 Difference]: Finished difference Result 370 states and 479 transitions. [2023-12-16 15:38:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:38:19,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 91 [2023-12-16 15:38:19,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:19,246 INFO L225 Difference]: With dead ends: 370 [2023-12-16 15:38:19,246 INFO L226 Difference]: Without dead ends: 211 [2023-12-16 15:38:19,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:38:19,247 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 108 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:38:19,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 545 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:38:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-16 15:38:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 143. [2023-12-16 15:38:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 118 states have (on average 1.2372881355932204) internal successors, (146), 118 states have internal predecessors, (146), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 15:38:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 182 transitions. [2023-12-16 15:38:19,261 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 182 transitions. Word has length 91 [2023-12-16 15:38:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:19,262 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 182 transitions. [2023-12-16 15:38:19,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 182 transitions. [2023-12-16 15:38:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 15:38:19,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:19,263 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:19,272 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 [2023-12-16 15:38:19,471 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 [2023-12-16 15:38:19,471 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:19,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1319048454, now seen corresponding path program 1 times [2023-12-16 15:38:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:19,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431442169] [2023-12-16 15:38:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:19,472 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 [2023-12-16 15:38:19,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:19,473 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) [2023-12-16 15:38:19,474 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 [2023-12-16 15:38:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:19,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 15:38:19,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:20,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-16 15:38:20,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-16 15:38:20,385 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:38:20,385 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 48 treesize of output 48 [2023-12-16 15:38:20,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:38:20,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2023-12-16 15:38:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-16 15:38:20,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:38:20,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:20,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431442169] [2023-12-16 15:38:20,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431442169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:38:20,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:38:20,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:38:20,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575749806] [2023-12-16 15:38:20,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:38:20,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:38:20,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:38:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:38:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:38:20,413 INFO L87 Difference]: Start difference. First operand 143 states and 182 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:20,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:20,690 INFO L93 Difference]: Finished difference Result 232 states and 297 transitions. [2023-12-16 15:38:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:38:20,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 93 [2023-12-16 15:38:20,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:20,692 INFO L225 Difference]: With dead ends: 232 [2023-12-16 15:38:20,692 INFO L226 Difference]: Without dead ends: 137 [2023-12-16 15:38:20,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:38:20,693 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 178 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:38:20,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 275 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:38:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-16 15:38:20,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-12-16 15:38:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 112 states have internal predecessors, (137), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 15:38:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 173 transitions. [2023-12-16 15:38:20,708 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 173 transitions. Word has length 93 [2023-12-16 15:38:20,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:20,708 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 173 transitions. [2023-12-16 15:38:20,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:20,708 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 173 transitions. [2023-12-16 15:38:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 15:38:20,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:20,709 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:20,717 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 [2023-12-16 15:38:20,916 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 [2023-12-16 15:38:20,916 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:20,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:20,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1137202038, now seen corresponding path program 1 times [2023-12-16 15:38:20,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:20,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687528248] [2023-12-16 15:38:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:20,917 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 [2023-12-16 15:38:20,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:20,918 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) [2023-12-16 15:38:20,919 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 [2023-12-16 15:38:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:21,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 15:38:21,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:22,366 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 20 [2023-12-16 15:38:22,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2023-12-16 15:38:22,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:38:22,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 22 [2023-12-16 15:38:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-16 15:38:23,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:38:23,636 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 27 [2023-12-16 15:38:23,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:23,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687528248] [2023-12-16 15:38:23,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687528248] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:38:23,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [114633973] [2023-12-16 15:38:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:23,762 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:38:23,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:38:23,767 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:38:23,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-16 15:38:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:24,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 15:38:24,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:25,516 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 [2023-12-16 15:38:27,257 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 20 [2023-12-16 15:38:27,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 33 [2023-12-16 15:38:27,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-16 15:38:27,444 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-16 15:38:27,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:38:27,460 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 27 [2023-12-16 15:38:27,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [114633973] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:38:27,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:38:27,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-16 15:38:27,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784399207] [2023-12-16 15:38:27,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:38:27,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 15:38:27,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:38:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 15:38:27,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-12-16 15:38:27,560 INFO L87 Difference]: Start difference. First operand 137 states and 173 transitions. Second operand has 19 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-16 15:38:29,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 15:38:34,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 15:38:38,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:38,031 INFO L93 Difference]: Finished difference Result 277 states and 350 transitions. [2023-12-16 15:38:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 15:38:38,032 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) Word has length 93 [2023-12-16 15:38:38,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:38,032 INFO L225 Difference]: With dead ends: 277 [2023-12-16 15:38:38,032 INFO L226 Difference]: Without dead ends: 188 [2023-12-16 15:38:38,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 15:38:38,034 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 440 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 100 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:38:38,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 843 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 288 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2023-12-16 15:38:38,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-16 15:38:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 155. [2023-12-16 15:38:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 129 states have (on average 1.2248062015503876) internal successors, (158), 129 states have internal predecessors, (158), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 15:38:38,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 194 transitions. [2023-12-16 15:38:38,050 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 194 transitions. Word has length 93 [2023-12-16 15:38:38,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:38,051 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 194 transitions. [2023-12-16 15:38:38,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-16 15:38:38,051 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 194 transitions. [2023-12-16 15:38:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 15:38:38,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:38,052 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:38,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2023-12-16 15:38:38,267 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 [2023-12-16 15:38:38,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:38:38,460 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:38,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:38,461 INFO L85 PathProgramCache]: Analyzing trace with hash 550396024, now seen corresponding path program 1 times [2023-12-16 15:38:38,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:38,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378138574] [2023-12-16 15:38:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:38,461 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 [2023-12-16 15:38:38,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:38,462 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) [2023-12-16 15:38:38,463 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 [2023-12-16 15:38:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:38,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:38:38,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-16 15:38:38,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:38:38,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:38,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378138574] [2023-12-16 15:38:38,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378138574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:38:38,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:38:38,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:38:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067390893] [2023-12-16 15:38:38,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:38:38,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:38:38,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:38:38,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:38:38,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:38:38,734 INFO L87 Difference]: Start difference. First operand 155 states and 194 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:38,806 INFO L93 Difference]: Finished difference Result 266 states and 338 transitions. [2023-12-16 15:38:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:38:38,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 93 [2023-12-16 15:38:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:38,807 INFO L225 Difference]: With dead ends: 266 [2023-12-16 15:38:38,807 INFO L226 Difference]: Without dead ends: 177 [2023-12-16 15:38:38,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:38:38,808 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 60 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:38:38,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 370 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:38:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-16 15:38:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 158. [2023-12-16 15:38:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 132 states have (on average 1.2196969696969697) internal successors, (161), 132 states have internal predecessors, (161), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 15:38:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 197 transitions. [2023-12-16 15:38:38,833 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 197 transitions. Word has length 93 [2023-12-16 15:38:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:38,833 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 197 transitions. [2023-12-16 15:38:38,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 197 transitions. [2023-12-16 15:38:38,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-16 15:38:38,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:38,834 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:38,843 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 [2023-12-16 15:38:39,034 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 [2023-12-16 15:38:39,034 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:39,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:39,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1172652442, now seen corresponding path program 1 times [2023-12-16 15:38:39,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:39,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318860743] [2023-12-16 15:38:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:39,035 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 [2023-12-16 15:38:39,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:39,036 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) [2023-12-16 15:38:39,037 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 [2023-12-16 15:38:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:39,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:38:39,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-16 15:38:39,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:38:39,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:39,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318860743] [2023-12-16 15:38:39,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318860743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:38:39,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:38:39,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:38:39,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315873878] [2023-12-16 15:38:39,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:38:39,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:38:39,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:38:39,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:38:39,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:38:39,310 INFO L87 Difference]: Start difference. First operand 158 states and 197 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:39,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:39,377 INFO L93 Difference]: Finished difference Result 264 states and 333 transitions. [2023-12-16 15:38:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:38:39,377 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 95 [2023-12-16 15:38:39,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:39,378 INFO L225 Difference]: With dead ends: 264 [2023-12-16 15:38:39,379 INFO L226 Difference]: Without dead ends: 172 [2023-12-16 15:38:39,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:38:39,379 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 45 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:38:39,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 366 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:38:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-16 15:38:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 161. [2023-12-16 15:38:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 135 states have (on average 1.2148148148148148) internal successors, (164), 135 states have internal predecessors, (164), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 15:38:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 200 transitions. [2023-12-16 15:38:39,397 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 200 transitions. Word has length 95 [2023-12-16 15:38:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:39,397 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 200 transitions. [2023-12-16 15:38:39,397 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 15:38:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 200 transitions. [2023-12-16 15:38:39,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-16 15:38:39,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:39,398 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:39,411 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 [2023-12-16 15:38:39,611 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 [2023-12-16 15:38:39,611 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:39,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:39,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2125307247, now seen corresponding path program 1 times [2023-12-16 15:38:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:39,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093149512] [2023-12-16 15:38:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:39,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:38:39,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:39,613 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) [2023-12-16 15:38:39,614 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 [2023-12-16 15:38:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:39,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 15:38:39,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:41,175 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 28 treesize of output 12 [2023-12-16 15:38:41,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-16 15:38:41,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-16 15:38:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-16 15:38:41,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 15:38:41,819 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 (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 15:38:41,820 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 [2023-12-16 15:38:41,822 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 15:38:41,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-16 15:38:42,022 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 [2023-12-16 15:38:42,023 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 98 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. [2023-12-16 15:38:42,026 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:38:42,028 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 15:38:42,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:38:42 BoogieIcfgContainer [2023-12-16 15:38:42,030 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 15:38:42,031 INFO L158 Benchmark]: Toolchain (without parser) took 70452.62ms. Allocated memory was 203.4MB in the beginning and 340.8MB in the end (delta: 137.4MB). Free memory was 148.5MB in the beginning and 166.0MB in the end (delta: -17.5MB). Peak memory consumption was 121.2MB. Max. memory is 8.0GB. [2023-12-16 15:38:42,031 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 203.4MB. Free memory is still 158.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 15:38:42,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.25ms. Allocated memory is still 203.4MB. Free memory was 148.3MB in the beginning and 132.9MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 15:38:42,031 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.48ms. Allocated memory is still 203.4MB. Free memory was 132.9MB in the beginning and 129.6MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 15:38:42,032 INFO L158 Benchmark]: Boogie Preprocessor took 88.82ms. Allocated memory is still 203.4MB. Free memory was 129.6MB in the beginning and 124.4MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 15:38:42,032 INFO L158 Benchmark]: RCFGBuilder took 2580.45ms. Allocated memory was 203.4MB in the beginning and 340.8MB in the end (delta: 137.4MB). Free memory was 124.4MB in the beginning and 268.7MB in the end (delta: -144.3MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2023-12-16 15:38:42,032 INFO L158 Benchmark]: TraceAbstraction took 67413.45ms. Allocated memory is still 340.8MB. Free memory was 267.7MB in the beginning and 166.0MB in the end (delta: 101.7MB). Peak memory consumption was 102.2MB. Max. memory is 8.0GB. [2023-12-16 15:38:42,033 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 203.4MB. Free memory is still 158.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 311.25ms. Allocated memory is still 203.4MB. Free memory was 148.3MB in the beginning and 132.9MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.48ms. Allocated memory is still 203.4MB. Free memory was 132.9MB in the beginning and 129.6MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 88.82ms. Allocated memory is still 203.4MB. Free memory was 129.6MB in the beginning and 124.4MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 2580.45ms. Allocated memory was 203.4MB in the beginning and 340.8MB in the end (delta: 137.4MB). Free memory was 124.4MB in the beginning and 268.7MB in the end (delta: -144.3MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * TraceAbstraction took 67413.45ms. Allocated memory is still 340.8MB. Free memory was 267.7MB in the beginning and 166.0MB in the end (delta: 101.7MB). Peak memory consumption was 102.2MB. 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 98 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.4s, OverallIterations: 17, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 34.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 2120 SdHoareTripleChecker+Valid, 27.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2112 mSDsluCounter, 7651 SdHoareTripleChecker+Invalid, 26.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5927 mSDsCounter, 230 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1790 IncrementalHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 230 mSolverCounterUnsat, 1724 mSDtfsCounter, 1790 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2490 GetRequests, 2259 SyntacticMatches, 4 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 16.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=11, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 363 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 1875 NumberOfCodeBlocks, 1875 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 2122 ConstructedInterpolants, 86 QuantifiedInterpolants, 13405 SizeOfPredicates, 190 NumberOfNonLiveVariables, 5047 ConjunctsInSsa, 192 ConjunctsInUnsatCore, 24 InterpolantComputations, 13 PerfectInterpolantSequences, 2743/3456 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