/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:09:56,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:09:56,390 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 16:09:56,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:09:56,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:09:56,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:09:56,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:09:56,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:09:56,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:09:56,421 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:09:56,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:09:56,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:09:56,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:09:56,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:09:56,423 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:09:56,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:09:56,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:09:56,424 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:09:56,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:09:56,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:09:56,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:09:56,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:09:56,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:09:56,425 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:09:56,425 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:09:56,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:09:56,425 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:09:56,425 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:09:56,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:09:56,426 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:09:56,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:09:56,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:09:56,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:09:56,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:09:56,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:09:56,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:09:56,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:09:56,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:09:56,427 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:09:56,427 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:09:56,427 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:09:56,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:09:56,428 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:09:56,428 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:09:56,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:09:56,428 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:09:56,428 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:09:56,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:09:56,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:09:56,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:09:56,624 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:09:56,625 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:09:56,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-2.i [2023-12-24 16:09:57,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:09:57,709 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:09:57,710 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-2.i [2023-12-24 16:09:57,715 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3567092da/d5984b99eae64095bd0c20c3b17c56d7/FLAG578722182 [2023-12-24 16:09:57,724 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3567092da/d5984b99eae64095bd0c20c3b17c56d7 [2023-12-24 16:09:57,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:09:57,727 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:09:57,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:09:57,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:09:57,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:09:57,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:57,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b5f937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57, skipping insertion in model container [2023-12-24 16:09:57,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:57,754 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:09:57,843 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-2.i[915,928] [2023-12-24 16:09:57,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:09:57,889 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:09:57,897 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-2.i[915,928] [2023-12-24 16:09:57,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:09:57,937 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:09:57,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57 WrapperNode [2023-12-24 16:09:57,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:09:57,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:09:57,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:09:57,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:09:57,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:57,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:57,988 INFO L138 Inliner]: procedures = 33, calls = 164, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 524 [2023-12-24 16:09:57,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:09:57,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:09:57,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:09:57,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:09:57,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:57,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:58,002 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:58,024 INFO L175 MemorySlicer]: Split 131 memory accesses to 11 slices as follows [2, 12, 14, 22, 16, 14, 12, 8, 7, 14, 10]. 17 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 15 writes are split as follows [0, 1, 1, 1, 1, 1, 4, 1, 3, 1, 1]. [2023-12-24 16:09:58,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:58,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:58,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:58,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:58,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:58,046 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:58,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:09:58,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:09:58,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:09:58,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:09:58,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (1/1) ... [2023-12-24 16:09:58,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:09:58,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:09:58,087 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 16:09:58,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 16:09:58,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:09:58,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:09:58,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:09:58,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 16:09:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:09:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2023-12-24 16:09:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 16:09:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 16:09:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:09:58,111 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:09:58,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:09:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 16:09:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 16:09:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 16:09:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-24 16:09:58,257 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:09:58,259 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:09:58,741 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:09:58,767 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:09:58,767 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:09:58,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:09:58 BoogieIcfgContainer [2023-12-24 16:09:58,767 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:09:58,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:09:58,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:09:58,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:09:58,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:09:57" (1/3) ... [2023-12-24 16:09:58,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f17b10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:09:58, skipping insertion in model container [2023-12-24 16:09:58,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:09:57" (2/3) ... [2023-12-24 16:09:58,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f17b10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:09:58, skipping insertion in model container [2023-12-24 16:09:58,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:09:58" (3/3) ... [2023-12-24 16:09:58,772 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-2.i [2023-12-24 16:09:58,783 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:09:58,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:09:58,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:09:58,818 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;@54f8ecf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:09:58,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:09:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 78 states have (on average 1.5) internal successors, (117), 79 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 16:09:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-24 16:09:58,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:09:58,830 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:09:58,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:09:58,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:09:58,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1528848566, now seen corresponding path program 1 times [2023-12-24 16:09:58,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:09:58,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37317379] [2023-12-24 16:09:58,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:09:58,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:09:58,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:09:58,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:09:58,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 16:09:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:09:59,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:09:59,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:09:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-12-24 16:09:59,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:09:59,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:09:59,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37317379] [2023-12-24 16:09:59,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37317379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:09:59,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:09:59,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:09:59,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665956833] [2023-12-24 16:09:59,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:09:59,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:09:59,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:09:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:09:59,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:09:59,176 INFO L87 Difference]: Start difference. First operand has 93 states, 78 states have (on average 1.5) internal successors, (117), 79 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 16:09:59,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:09:59,226 INFO L93 Difference]: Finished difference Result 183 states and 292 transitions. [2023-12-24 16:09:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:09:59,228 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2023-12-24 16:09:59,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:09:59,235 INFO L225 Difference]: With dead ends: 183 [2023-12-24 16:09:59,235 INFO L226 Difference]: Without dead ends: 91 [2023-12-24 16:09:59,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:09:59,243 INFO L413 NwaCegarLoop]: 132 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, 132 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:09:59,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:09:59,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-24 16:09:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-24 16:09:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 77 states have internal predecessors, (112), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 16:09:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 136 transitions. [2023-12-24 16:09:59,274 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 136 transitions. Word has length 95 [2023-12-24 16:09:59,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:09:59,275 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 136 transitions. [2023-12-24 16:09:59,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 16:09:59,275 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 136 transitions. [2023-12-24 16:09:59,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-24 16:09:59,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:09:59,277 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:09:59,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 16:09:59,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:09:59,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:09:59,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:09:59,485 INFO L85 PathProgramCache]: Analyzing trace with hash -525644406, now seen corresponding path program 1 times [2023-12-24 16:09:59,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:09:59,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790512193] [2023-12-24 16:09:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:09:59,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:09:59,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:09:59,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:09:59,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 16:09:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:09:59,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:09:59,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:09:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:09:59,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:09:59,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:09:59,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790512193] [2023-12-24 16:09:59,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790512193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:09:59,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:09:59,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:09:59,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827847503] [2023-12-24 16:09:59,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:09:59,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:09:59,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:09:59,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:09:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:09:59,770 INFO L87 Difference]: Start difference. First operand 91 states and 136 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 16:09:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:09:59,843 INFO L93 Difference]: Finished difference Result 187 states and 280 transitions. [2023-12-24 16:09:59,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:09:59,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2023-12-24 16:09:59,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:09:59,847 INFO L225 Difference]: With dead ends: 187 [2023-12-24 16:09:59,847 INFO L226 Difference]: Without dead ends: 97 [2023-12-24 16:09:59,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:09:59,850 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 10 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:09:59,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 385 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:09:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-24 16:09:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2023-12-24 16:09:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 79 states have internal predecessors, (114), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 16:09:59,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 138 transitions. [2023-12-24 16:09:59,869 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 138 transitions. Word has length 95 [2023-12-24 16:09:59,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:09:59,870 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 138 transitions. [2023-12-24 16:09:59,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 16:09:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 138 transitions. [2023-12-24 16:09:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-24 16:09:59,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:09:59,875 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:09:59,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:00,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:00,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:00,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash -453257848, now seen corresponding path program 1 times [2023-12-24 16:10:00,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:00,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408109262] [2023-12-24 16:10:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:00,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:00,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:00,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:00,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 16:10:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:00,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:10:00,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:00,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:10:00,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:10:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:00,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:10:00,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:00,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408109262] [2023-12-24 16:10:00,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408109262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:10:00,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:10:00,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:10:00,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018682452] [2023-12-24 16:10:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:00,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:10:00,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:10:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:10:00,691 INFO L87 Difference]: Start difference. First operand 93 states and 138 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:00,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:00,865 INFO L93 Difference]: Finished difference Result 278 states and 413 transitions. [2023-12-24 16:10:00,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:10:00,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 95 [2023-12-24 16:10:00,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:00,866 INFO L225 Difference]: With dead ends: 278 [2023-12-24 16:10:00,866 INFO L226 Difference]: Without dead ends: 186 [2023-12-24 16:10:00,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:10:00,867 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 121 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:00,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 369 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:10:00,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-24 16:10:00,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 155. [2023-12-24 16:10:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 128 states have (on average 1.4140625) internal successors, (181), 128 states have internal predecessors, (181), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 16:10:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 229 transitions. [2023-12-24 16:10:00,878 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 229 transitions. Word has length 95 [2023-12-24 16:10:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:00,878 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 229 transitions. [2023-12-24 16:10:00,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 229 transitions. [2023-12-24 16:10:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-24 16:10:00,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:00,879 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:00,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:01,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:01,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:01,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:01,093 INFO L85 PathProgramCache]: Analyzing trace with hash -756534863, now seen corresponding path program 1 times [2023-12-24 16:10:01,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:01,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463042522] [2023-12-24 16:10:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:01,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:01,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:01,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:01,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 16:10:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:01,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 16:10:01,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:01,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:10:01,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463042522] [2023-12-24 16:10:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463042522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:10:01,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:10:01,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:10:01,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73876290] [2023-12-24 16:10:01,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:01,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 16:10:01,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:01,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 16:10:01,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 16:10:01,307 INFO L87 Difference]: Start difference. First operand 155 states and 229 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:01,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:01,332 INFO L93 Difference]: Finished difference Result 256 states and 380 transitions. [2023-12-24 16:10:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 16:10:01,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101 [2023-12-24 16:10:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:01,334 INFO L225 Difference]: With dead ends: 256 [2023-12-24 16:10:01,334 INFO L226 Difference]: Without dead ends: 157 [2023-12-24 16:10:01,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 16:10:01,337 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:01,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 257 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:10:01,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-24 16:10:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-12-24 16:10:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 130 states have (on average 1.4076923076923078) internal successors, (183), 130 states have internal predecessors, (183), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 16:10:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 231 transitions. [2023-12-24 16:10:01,356 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 231 transitions. Word has length 101 [2023-12-24 16:10:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:01,357 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 231 transitions. [2023-12-24 16:10:01,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:01,357 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 231 transitions. [2023-12-24 16:10:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-24 16:10:01,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:01,358 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:01,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 16:10:01,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:01,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:01,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:01,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1777603217, now seen corresponding path program 1 times [2023-12-24 16:10:01,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:01,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884303409] [2023-12-24 16:10:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:01,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:01,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:01,566 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:01,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 16:10:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:01,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:10:01,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:02,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:10:02,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 16:10:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:10:02,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:02,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:02,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884303409] [2023-12-24 16:10:02,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884303409] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:02,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:02,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:10:02,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459898911] [2023-12-24 16:10:02,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:02,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:02,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:02,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:02,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:10:02,588 INFO L87 Difference]: Start difference. First operand 157 states and 231 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:02,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:02,853 INFO L93 Difference]: Finished difference Result 314 states and 460 transitions. [2023-12-24 16:10:02,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:10:02,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101 [2023-12-24 16:10:02,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:02,855 INFO L225 Difference]: With dead ends: 314 [2023-12-24 16:10:02,855 INFO L226 Difference]: Without dead ends: 221 [2023-12-24 16:10:02,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:10:02,856 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 124 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:02,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 500 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:10:02,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-24 16:10:02,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 197. [2023-12-24 16:10:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 167 states have (on average 1.407185628742515) internal successors, (235), 168 states have internal predecessors, (235), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:10:02,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 287 transitions. [2023-12-24 16:10:02,864 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 287 transitions. Word has length 101 [2023-12-24 16:10:02,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:02,864 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 287 transitions. [2023-12-24 16:10:02,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:02,864 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 287 transitions. [2023-12-24 16:10:02,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-24 16:10:02,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:02,865 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:02,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:03,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:03,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:03,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:03,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2124337069, now seen corresponding path program 1 times [2023-12-24 16:10:03,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:03,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359415763] [2023-12-24 16:10:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:03,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:03,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:03,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:03,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 16:10:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:03,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:10:03,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:03,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 16:10:03,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:10:03,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 16:10:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:03,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:10:03,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:03,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359415763] [2023-12-24 16:10:03,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359415763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:10:03,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:10:03,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 16:10:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780639939] [2023-12-24 16:10:03,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:03,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:10:03,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:10:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:10:03,374 INFO L87 Difference]: Start difference. First operand 197 states and 287 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:03,980 INFO L93 Difference]: Finished difference Result 554 states and 819 transitions. [2023-12-24 16:10:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:10:03,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101 [2023-12-24 16:10:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:03,983 INFO L225 Difference]: With dead ends: 554 [2023-12-24 16:10:03,983 INFO L226 Difference]: Without dead ends: 423 [2023-12-24 16:10:03,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:10:03,984 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 530 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:03,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 852 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:10:03,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-12-24 16:10:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 245. [2023-12-24 16:10:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 215 states have (on average 1.4232558139534883) internal successors, (306), 216 states have internal predecessors, (306), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:10:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 358 transitions. [2023-12-24 16:10:03,995 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 358 transitions. Word has length 101 [2023-12-24 16:10:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:03,995 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 358 transitions. [2023-12-24 16:10:03,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 358 transitions. [2023-12-24 16:10:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 16:10:03,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:03,996 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:04,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:04,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:04,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:04,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1693921809, now seen corresponding path program 1 times [2023-12-24 16:10:04,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:04,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11644094] [2023-12-24 16:10:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:04,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:04,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:04,205 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:04,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 16:10:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:04,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:10:04,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:04,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:10:04,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 16:10:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:04,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:10:04,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:04,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11644094] [2023-12-24 16:10:04,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11644094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:10:04,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:10:04,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:10:04,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988118659] [2023-12-24 16:10:04,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:04,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:10:04,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:04,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:10:04,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:10:04,514 INFO L87 Difference]: Start difference. First operand 245 states and 358 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:04,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:04,876 INFO L93 Difference]: Finished difference Result 577 states and 846 transitions. [2023-12-24 16:10:04,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:10:04,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-12-24 16:10:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:04,878 INFO L225 Difference]: With dead ends: 577 [2023-12-24 16:10:04,879 INFO L226 Difference]: Without dead ends: 417 [2023-12-24 16:10:04,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:10:04,879 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 246 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:04,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 681 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:10:04,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-24 16:10:04,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 289. [2023-12-24 16:10:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 259 states have (on average 1.4401544401544402) internal successors, (373), 260 states have internal predecessors, (373), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:10:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 425 transitions. [2023-12-24 16:10:04,890 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 425 transitions. Word has length 103 [2023-12-24 16:10:04,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:04,890 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 425 transitions. [2023-12-24 16:10:04,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 425 transitions. [2023-12-24 16:10:04,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 16:10:04,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:04,891 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:04,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:05,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:05,092 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:05,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1033256115, now seen corresponding path program 1 times [2023-12-24 16:10:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281847466] [2023-12-24 16:10:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:05,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:05,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:05,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:05,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 16:10:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:05,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:10:05,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:05,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 16:10:05,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:10:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:10:05,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:06,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281847466] [2023-12-24 16:10:06,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281847466] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:06,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:06,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:10:06,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726219470] [2023-12-24 16:10:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:06,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:06,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:06,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:06,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:10:06,120 INFO L87 Difference]: Start difference. First operand 289 states and 425 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:06,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:06,313 INFO L93 Difference]: Finished difference Result 556 states and 813 transitions. [2023-12-24 16:10:06,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:10:06,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-12-24 16:10:06,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:06,317 INFO L225 Difference]: With dead ends: 556 [2023-12-24 16:10:06,317 INFO L226 Difference]: Without dead ends: 370 [2023-12-24 16:10:06,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:10:06,318 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 146 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:06,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 462 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:10:06,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-12-24 16:10:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 330. [2023-12-24 16:10:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 299 states have (on average 1.4414715719063544) internal successors, (431), 300 states have internal predecessors, (431), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:10:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 483 transitions. [2023-12-24 16:10:06,336 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 483 transitions. Word has length 103 [2023-12-24 16:10:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:06,336 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 483 transitions. [2023-12-24 16:10:06,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 483 transitions. [2023-12-24 16:10:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 16:10:06,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:06,337 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:06,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-24 16:10:06,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:06,544 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:06,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash 215607665, now seen corresponding path program 1 times [2023-12-24 16:10:06,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:06,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990538274] [2023-12-24 16:10:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:06,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:06,546 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:06,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 16:10:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:06,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:10:06,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:06,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:10:06,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 16:10:06,865 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:06,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:10:06,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:06,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990538274] [2023-12-24 16:10:06,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990538274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:10:06,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:10:06,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:10:06,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595583] [2023-12-24 16:10:06,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:06,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:10:06,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:06,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:10:06,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:10:06,867 INFO L87 Difference]: Start difference. First operand 330 states and 483 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:07,273 INFO L93 Difference]: Finished difference Result 764 states and 1129 transitions. [2023-12-24 16:10:07,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:10:07,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-12-24 16:10:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:07,276 INFO L225 Difference]: With dead ends: 764 [2023-12-24 16:10:07,276 INFO L226 Difference]: Without dead ends: 561 [2023-12-24 16:10:07,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:10:07,277 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 194 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:07,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 865 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:10:07,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-12-24 16:10:07,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 413. [2023-12-24 16:10:07,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 382 states have (on average 1.4528795811518325) internal successors, (555), 383 states have internal predecessors, (555), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:10:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 607 transitions. [2023-12-24 16:10:07,289 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 607 transitions. Word has length 103 [2023-12-24 16:10:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:07,290 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 607 transitions. [2023-12-24 16:10:07,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:07,290 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 607 transitions. [2023-12-24 16:10:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 16:10:07,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:07,291 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:07,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:07,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:07,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:07,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:07,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1475067091, now seen corresponding path program 1 times [2023-12-24 16:10:07,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:07,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088402937] [2023-12-24 16:10:07,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:07,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:07,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:07,503 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:07,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 16:10:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:07,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:10:07,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:08,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 16:10:08,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:10:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:10:08,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:08,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:08,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088402937] [2023-12-24 16:10:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088402937] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:08,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:08,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:10:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9435442] [2023-12-24 16:10:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:08,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:08,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:08,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:10:08,568 INFO L87 Difference]: Start difference. First operand 413 states and 607 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:08,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:08,782 INFO L93 Difference]: Finished difference Result 752 states and 1106 transitions. [2023-12-24 16:10:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:10:08,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-12-24 16:10:08,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:08,785 INFO L225 Difference]: With dead ends: 752 [2023-12-24 16:10:08,785 INFO L226 Difference]: Without dead ends: 501 [2023-12-24 16:10:08,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:10:08,786 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 154 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:08,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 464 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:10:08,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-24 16:10:08,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 386. [2023-12-24 16:10:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 355 states have (on average 1.4535211267605634) internal successors, (516), 356 states have internal predecessors, (516), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:10:08,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 568 transitions. [2023-12-24 16:10:08,796 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 568 transitions. Word has length 103 [2023-12-24 16:10:08,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:08,796 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 568 transitions. [2023-12-24 16:10:08,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:08,796 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 568 transitions. [2023-12-24 16:10:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 16:10:08,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:08,797 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:08,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:08,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:08,998 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:08,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1462780566, now seen corresponding path program 1 times [2023-12-24 16:10:08,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:08,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783671048] [2023-12-24 16:10:08,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:08,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:08,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:09,001 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:09,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 16:10:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:09,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:10:09,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:09,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:10:09,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:10:09,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-24 16:10:09,954 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 65 treesize of output 41 [2023-12-24 16:10:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:10:10,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:10,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:10,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783671048] [2023-12-24 16:10:10,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783671048] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:10,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:10,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2023-12-24 16:10:10,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435853299] [2023-12-24 16:10:10,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:10,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:10:10,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:10,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:10:10,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:10:10,180 INFO L87 Difference]: Start difference. First operand 386 states and 568 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:10,475 INFO L93 Difference]: Finished difference Result 829 states and 1211 transitions. [2023-12-24 16:10:10,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:10:10,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-12-24 16:10:10,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:10,477 INFO L225 Difference]: With dead ends: 829 [2023-12-24 16:10:10,477 INFO L226 Difference]: Without dead ends: 587 [2023-12-24 16:10:10,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:10:10,478 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 274 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:10,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 665 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:10:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2023-12-24 16:10:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 482. [2023-12-24 16:10:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 451 states have (on average 1.441241685144124) internal successors, (650), 452 states have internal predecessors, (650), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:10:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 702 transitions. [2023-12-24 16:10:10,489 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 702 transitions. Word has length 104 [2023-12-24 16:10:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:10,489 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 702 transitions. [2023-12-24 16:10:10,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 702 transitions. [2023-12-24 16:10:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 16:10:10,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:10,490 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:10,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:10,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:10,697 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:10,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:10,697 INFO L85 PathProgramCache]: Analyzing trace with hash -890852081, now seen corresponding path program 1 times [2023-12-24 16:10:10,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:10,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879423396] [2023-12-24 16:10:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:10,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:10,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:10,699 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:10,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 16:10:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:10,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:10:10,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:11,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:10:11,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 16:10:11,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:10:11,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:10:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:10:11,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:11,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:10:11,815 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 28 treesize of output 31 [2023-12-24 16:10:11,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:11,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879423396] [2023-12-24 16:10:11,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879423396] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:11,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [670879427] [2023-12-24 16:10:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:11,991 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:10:11,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:10:11,993 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:10:11,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-24 16:10:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:12,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 16:10:12,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:12,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:10:13,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:10:14,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:10:14,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 16:10:14,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:10:14,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 16:10:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 188 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-24 16:10:14,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:14,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-12-24 16:10:14,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [670879427] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:14,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:10:14,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2023-12-24 16:10:14,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523990763] [2023-12-24 16:10:14,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:10:14,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 16:10:14,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:14,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 16:10:14,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 16:10:14,844 INFO L87 Difference]: Start difference. First operand 482 states and 702 transitions. Second operand has 28 states, 24 states have (on average 4.416666666666667) internal successors, (106), 23 states have internal predecessors, (106), 11 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) [2023-12-24 16:10:17,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:17,126 INFO L93 Difference]: Finished difference Result 874 states and 1244 transitions. [2023-12-24 16:10:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 16:10:17,137 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 4.416666666666667) internal successors, (106), 23 states have internal predecessors, (106), 11 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) Word has length 104 [2023-12-24 16:10:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:17,140 INFO L225 Difference]: With dead ends: 874 [2023-12-24 16:10:17,140 INFO L226 Difference]: Without dead ends: 562 [2023-12-24 16:10:17,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 324 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=759, Invalid=3147, Unknown=0, NotChecked=0, Total=3906 [2023-12-24 16:10:17,143 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 850 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:17,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 997 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 16:10:17,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-12-24 16:10:17,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 506. [2023-12-24 16:10:17,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 469 states have (on average 1.4072494669509594) internal successors, (660), 470 states have internal predecessors, (660), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:10:17,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 712 transitions. [2023-12-24 16:10:17,165 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 712 transitions. Word has length 104 [2023-12-24 16:10:17,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:17,165 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 712 transitions. [2023-12-24 16:10:17,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 4.416666666666667) internal successors, (106), 23 states have internal predecessors, (106), 11 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) [2023-12-24 16:10:17,165 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 712 transitions. [2023-12-24 16:10:17,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 16:10:17,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:17,166 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:17,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-24 16:10:17,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:17,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:17,571 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:17,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:17,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1355999957, now seen corresponding path program 1 times [2023-12-24 16:10:17,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:17,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374324416] [2023-12-24 16:10:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:17,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:17,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:17,573 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:17,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 16:10:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:17,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:10:17,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:17,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 16:10:17,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:10:17,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 16:10:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 16:10:18,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:18,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:18,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374324416] [2023-12-24 16:10:18,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374324416] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:18,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:18,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 17 [2023-12-24 16:10:18,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010567155] [2023-12-24 16:10:18,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:18,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:10:18,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:18,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:10:18,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:10:18,154 INFO L87 Difference]: Start difference. First operand 506 states and 712 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:18,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:18,771 INFO L93 Difference]: Finished difference Result 1144 states and 1620 transitions. [2023-12-24 16:10:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 16:10:18,772 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105 [2023-12-24 16:10:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:18,775 INFO L225 Difference]: With dead ends: 1144 [2023-12-24 16:10:18,775 INFO L226 Difference]: Without dead ends: 828 [2023-12-24 16:10:18,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:10:18,776 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 331 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:18,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1721 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:10:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-12-24 16:10:18,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 576. [2023-12-24 16:10:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 539 states have (on average 1.4100185528756957) internal successors, (760), 540 states have internal predecessors, (760), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:10:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 812 transitions. [2023-12-24 16:10:18,797 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 812 transitions. Word has length 105 [2023-12-24 16:10:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:18,800 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 812 transitions. [2023-12-24 16:10:18,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 812 transitions. [2023-12-24 16:10:18,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 16:10:18,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:18,801 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:18,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:19,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:19,007 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:19,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1749026967, now seen corresponding path program 1 times [2023-12-24 16:10:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:19,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785691432] [2023-12-24 16:10:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:19,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:19,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:19,009 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:19,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 16:10:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:19,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:10:19,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:19,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:10:19,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 16:10:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:10:19,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:19,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:19,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785691432] [2023-12-24 16:10:19,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785691432] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:19,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:19,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:10:19,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513277037] [2023-12-24 16:10:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:19,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:19,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:19,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:10:19,942 INFO L87 Difference]: Start difference. First operand 576 states and 812 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:20,236 INFO L93 Difference]: Finished difference Result 1030 states and 1461 transitions. [2023-12-24 16:10:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:10:20,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105 [2023-12-24 16:10:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:20,239 INFO L225 Difference]: With dead ends: 1030 [2023-12-24 16:10:20,239 INFO L226 Difference]: Without dead ends: 674 [2023-12-24 16:10:20,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:10:20,240 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 85 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:20,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 499 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:10:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-12-24 16:10:20,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 584. [2023-12-24 16:10:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 547 states have (on average 1.4076782449725778) internal successors, (770), 548 states have internal predecessors, (770), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:10:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 822 transitions. [2023-12-24 16:10:20,260 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 822 transitions. Word has length 105 [2023-12-24 16:10:20,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:20,260 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 822 transitions. [2023-12-24 16:10:20,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:20,261 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 822 transitions. [2023-12-24 16:10:20,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 16:10:20,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:20,261 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:20,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:20,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:20,468 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:20,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1984533345, now seen corresponding path program 1 times [2023-12-24 16:10:20,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:20,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204069472] [2023-12-24 16:10:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:20,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:20,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:20,470 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:20,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 16:10:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:20,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:10:20,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:21,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:10:21,366 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 128 treesize of output 92 [2023-12-24 16:10:21,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 80 [2023-12-24 16:10:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:10:21,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:21,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204069472] [2023-12-24 16:10:21,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204069472] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1214751180] [2023-12-24 16:10:21,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:21,581 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:10:21,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:10:21,584 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:10:21,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-24 16:10:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:22,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 16:10:22,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:23,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:10:23,631 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2023-12-24 16:10:23,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 16:10:23,834 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 128 treesize of output 92 [2023-12-24 16:10:23,836 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 140 treesize of output 80 [2023-12-24 16:10:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:10:23,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:23,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1214751180] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:23,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:10:23,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-12-24 16:10:23,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552759509] [2023-12-24 16:10:23,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:10:23,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 16:10:23,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:23,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 16:10:23,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:10:23,954 INFO L87 Difference]: Start difference. First operand 584 states and 822 transitions. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 16:10:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:26,794 INFO L93 Difference]: Finished difference Result 1443 states and 2014 transitions. [2023-12-24 16:10:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 16:10:26,795 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 106 [2023-12-24 16:10:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:26,798 INFO L225 Difference]: With dead ends: 1443 [2023-12-24 16:10:26,798 INFO L226 Difference]: Without dead ends: 1441 [2023-12-24 16:10:26,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 16:10:26,800 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 709 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:26,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1602 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 16:10:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2023-12-24 16:10:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1278. [2023-12-24 16:10:26,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1202 states have (on average 1.4068219633943428) internal successors, (1691), 1207 states have internal predecessors, (1691), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:10:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1799 transitions. [2023-12-24 16:10:26,847 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1799 transitions. Word has length 106 [2023-12-24 16:10:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:26,847 INFO L495 AbstractCegarLoop]: Abstraction has 1278 states and 1799 transitions. [2023-12-24 16:10:26,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 16:10:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1799 transitions. [2023-12-24 16:10:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 16:10:26,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:26,849 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:26,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:27,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-24 16:10:27,255 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=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:10:27,256 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:27,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:27,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1979051542, now seen corresponding path program 1 times [2023-12-24 16:10:27,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:27,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171029153] [2023-12-24 16:10:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:27,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:27,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:27,258 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:27,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 16:10:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:27,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 16:10:27,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:28,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2023-12-24 16:10:28,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:10:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:10:28,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:28,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:28,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171029153] [2023-12-24 16:10:28,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171029153] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:28,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:28,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 22 [2023-12-24 16:10:28,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818419683] [2023-12-24 16:10:28,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:28,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:10:28,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:28,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:10:28,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:10:28,777 INFO L87 Difference]: Start difference. First operand 1278 states and 1799 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:29,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:29,485 INFO L93 Difference]: Finished difference Result 3032 states and 4318 transitions. [2023-12-24 16:10:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:10:29,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 16:10:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:29,491 INFO L225 Difference]: With dead ends: 3032 [2023-12-24 16:10:29,491 INFO L226 Difference]: Without dead ends: 2161 [2023-12-24 16:10:29,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:10:29,493 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 335 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:29,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 637 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:10:29,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2023-12-24 16:10:29,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1275. [2023-12-24 16:10:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1199 states have (on average 1.4053377814845704) internal successors, (1685), 1204 states have internal predecessors, (1685), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:10:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1793 transitions. [2023-12-24 16:10:29,548 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1793 transitions. Word has length 106 [2023-12-24 16:10:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:29,548 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1793 transitions. [2023-12-24 16:10:29,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1793 transitions. [2023-12-24 16:10:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 16:10:29,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:29,549 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:29,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:29,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:29,753 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:29,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:29,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1705115392, now seen corresponding path program 1 times [2023-12-24 16:10:29,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:29,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070542746] [2023-12-24 16:10:29,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:29,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:29,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:29,755 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:29,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 16:10:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:29,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 16:10:29,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:30,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:10:30,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 16:10:30,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2023-12-24 16:10:30,672 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 23 [2023-12-24 16:10:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-24 16:10:30,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:30,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-12-24 16:10:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:31,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:31,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070542746] [2023-12-24 16:10:31,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070542746] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:31,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:31,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 22 [2023-12-24 16:10:31,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086983306] [2023-12-24 16:10:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:31,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:10:31,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:31,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:10:31,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:10:31,096 INFO L87 Difference]: Start difference. First operand 1275 states and 1793 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:31,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:31,946 INFO L93 Difference]: Finished difference Result 2511 states and 3564 transitions. [2023-12-24 16:10:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:10:31,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 16:10:31,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:31,951 INFO L225 Difference]: With dead ends: 2511 [2023-12-24 16:10:31,951 INFO L226 Difference]: Without dead ends: 1643 [2023-12-24 16:10:31,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:10:31,953 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 182 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:31,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1021 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:10:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2023-12-24 16:10:32,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1275. [2023-12-24 16:10:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1199 states have (on average 1.4053377814845704) internal successors, (1685), 1204 states have internal predecessors, (1685), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:10:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1793 transitions. [2023-12-24 16:10:32,012 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1793 transitions. Word has length 106 [2023-12-24 16:10:32,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:32,012 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1793 transitions. [2023-12-24 16:10:32,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1793 transitions. [2023-12-24 16:10:32,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 16:10:32,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:32,014 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:32,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:32,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:32,220 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:32,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:32,221 INFO L85 PathProgramCache]: Analyzing trace with hash -100322942, now seen corresponding path program 1 times [2023-12-24 16:10:32,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:32,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872775931] [2023-12-24 16:10:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:32,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:32,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:32,222 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:32,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 16:10:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:32,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 16:10:32,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:32,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-24 16:10:32,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 16:10:33,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2023-12-24 16:10:33,019 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 23 [2023-12-24 16:10:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-24 16:10:33,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:33,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-12-24 16:10:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:33,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:33,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872775931] [2023-12-24 16:10:33,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872775931] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:33,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:33,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 20 [2023-12-24 16:10:33,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277326158] [2023-12-24 16:10:33,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:33,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:10:33,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:33,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:10:33,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:10:33,434 INFO L87 Difference]: Start difference. First operand 1275 states and 1793 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:34,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:34,303 INFO L93 Difference]: Finished difference Result 2952 states and 4191 transitions. [2023-12-24 16:10:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:10:34,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 16:10:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:34,309 INFO L225 Difference]: With dead ends: 2952 [2023-12-24 16:10:34,309 INFO L226 Difference]: Without dead ends: 2084 [2023-12-24 16:10:34,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:10:34,311 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 294 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:34,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 799 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:10:34,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2023-12-24 16:10:34,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1275. [2023-12-24 16:10:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1199 states have (on average 1.4053377814845704) internal successors, (1685), 1204 states have internal predecessors, (1685), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:10:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1793 transitions. [2023-12-24 16:10:34,362 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1793 transitions. Word has length 106 [2023-12-24 16:10:34,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:34,363 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1793 transitions. [2023-12-24 16:10:34,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1793 transitions. [2023-12-24 16:10:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 16:10:34,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:34,364 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:34,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:34,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:34,571 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:34,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:34,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2119600152, now seen corresponding path program 1 times [2023-12-24 16:10:34,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:34,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734221924] [2023-12-24 16:10:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:34,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:34,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:34,573 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:34,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 16:10:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:34,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 16:10:34,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:35,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 16:10:35,412 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 58 treesize of output 46 [2023-12-24 16:10:35,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2023-12-24 16:10:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-24 16:10:35,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:35,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:35,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734221924] [2023-12-24 16:10:35,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734221924] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:35,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:35,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 20 [2023-12-24 16:10:35,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801513788] [2023-12-24 16:10:35,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:35,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:10:35,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:10:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:10:35,789 INFO L87 Difference]: Start difference. First operand 1275 states and 1793 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:36,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:36,427 INFO L93 Difference]: Finished difference Result 2598 states and 3685 transitions. [2023-12-24 16:10:36,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:10:36,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 16:10:36,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:36,432 INFO L225 Difference]: With dead ends: 2598 [2023-12-24 16:10:36,432 INFO L226 Difference]: Without dead ends: 1730 [2023-12-24 16:10:36,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:10:36,434 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 321 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:36,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 670 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:10:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2023-12-24 16:10:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1276. [2023-12-24 16:10:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1200 states have (on average 1.405) internal successors, (1686), 1205 states have internal predecessors, (1686), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:10:36,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1794 transitions. [2023-12-24 16:10:36,482 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1794 transitions. Word has length 106 [2023-12-24 16:10:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:36,482 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1794 transitions. [2023-12-24 16:10:36,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:36,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1794 transitions. [2023-12-24 16:10:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 16:10:36,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:36,484 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:36,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:36,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:36,690 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:36,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:36,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1861434714, now seen corresponding path program 1 times [2023-12-24 16:10:36,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:36,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503355137] [2023-12-24 16:10:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:36,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:36,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:36,692 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:36,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 16:10:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:36,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:10:36,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:37,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:10:37,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 16:10:37,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:10:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 16:10:37,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:37,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:37,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503355137] [2023-12-24 16:10:37,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503355137] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:37,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:37,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-12-24 16:10:37,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152351190] [2023-12-24 16:10:37,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:37,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:37,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:37,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:37,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:10:37,355 INFO L87 Difference]: Start difference. First operand 1276 states and 1794 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:37,664 INFO L93 Difference]: Finished difference Result 2557 states and 3623 transitions. [2023-12-24 16:10:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:10:37,667 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 16:10:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:37,671 INFO L225 Difference]: With dead ends: 2557 [2023-12-24 16:10:37,671 INFO L226 Difference]: Without dead ends: 1688 [2023-12-24 16:10:37,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:10:37,673 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 231 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:37,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 483 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:10:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2023-12-24 16:10:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1181. [2023-12-24 16:10:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1105 states have (on average 1.4009049773755655) internal successors, (1548), 1110 states have internal predecessors, (1548), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:10:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1656 transitions. [2023-12-24 16:10:37,720 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1656 transitions. Word has length 106 [2023-12-24 16:10:37,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:37,720 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1656 transitions. [2023-12-24 16:10:37,721 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:37,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1656 transitions. [2023-12-24 16:10:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 16:10:37,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:37,722 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:37,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:37,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:37,928 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:37,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:37,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1468407704, now seen corresponding path program 1 times [2023-12-24 16:10:37,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:37,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654524992] [2023-12-24 16:10:37,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:37,929 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 [2023-12-24 16:10:37,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:37,930 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:37,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 16:10:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:38,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 16:10:38,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:38,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 16:10:38,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-24 16:10:38,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2023-12-24 16:10:38,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2023-12-24 16:10:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-24 16:10:38,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:39,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:39,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654524992] [2023-12-24 16:10:39,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654524992] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:39,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:39,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:10:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153240635] [2023-12-24 16:10:39,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:39,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:39,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:39,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:10:39,178 INFO L87 Difference]: Start difference. First operand 1181 states and 1656 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:39,629 INFO L93 Difference]: Finished difference Result 2721 states and 3854 transitions. [2023-12-24 16:10:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:10:39,630 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 16:10:39,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:39,634 INFO L225 Difference]: With dead ends: 2721 [2023-12-24 16:10:39,635 INFO L226 Difference]: Without dead ends: 1890 [2023-12-24 16:10:39,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:10:39,636 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 198 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:39,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 473 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:10:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2023-12-24 16:10:39,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1177. [2023-12-24 16:10:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1101 states have (on average 1.3941871026339692) internal successors, (1535), 1106 states have internal predecessors, (1535), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:10:39,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1643 transitions. [2023-12-24 16:10:39,684 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1643 transitions. Word has length 106 [2023-12-24 16:10:39,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:39,685 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1643 transitions. [2023-12-24 16:10:39,685 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:39,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1643 transitions. [2023-12-24 16:10:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 16:10:39,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:39,686 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:39,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-24 16:10:39,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:39,893 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:39,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:39,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1564566782, now seen corresponding path program 1 times [2023-12-24 16:10:39,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:39,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255898744] [2023-12-24 16:10:39,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:39,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:39,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:39,895 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:39,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 16:10:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:40,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:10:40,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:40,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2023-12-24 16:10:40,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2023-12-24 16:10:40,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-24 16:10:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-24 16:10:40,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:41,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:41,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255898744] [2023-12-24 16:10:41,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255898744] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:41,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:41,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 20 [2023-12-24 16:10:41,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867207102] [2023-12-24 16:10:41,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:41,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:10:41,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:10:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:10:41,038 INFO L87 Difference]: Start difference. First operand 1177 states and 1643 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:41,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:41,594 INFO L93 Difference]: Finished difference Result 2448 states and 3445 transitions. [2023-12-24 16:10:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:10:41,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 16:10:41,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:41,599 INFO L225 Difference]: With dead ends: 2448 [2023-12-24 16:10:41,599 INFO L226 Difference]: Without dead ends: 1616 [2023-12-24 16:10:41,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:10:41,600 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 170 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:41,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 923 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:10:41,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2023-12-24 16:10:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1177. [2023-12-24 16:10:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1101 states have (on average 1.3896457765667576) internal successors, (1530), 1106 states have internal predecessors, (1530), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:10:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1638 transitions. [2023-12-24 16:10:41,662 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1638 transitions. Word has length 106 [2023-12-24 16:10:41,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:41,662 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1638 transitions. [2023-12-24 16:10:41,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1638 transitions. [2023-12-24 16:10:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 16:10:41,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:41,664 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:41,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-24 16:10:41,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:41,871 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:41,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:41,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1171539772, now seen corresponding path program 1 times [2023-12-24 16:10:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:41,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132847058] [2023-12-24 16:10:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:41,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:41,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:41,873 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:41,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 16:10:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:42,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 16:10:42,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:42,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-12-24 16:10:42,766 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 50 treesize of output 38 [2023-12-24 16:10:42,771 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 23 [2023-12-24 16:10:42,843 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-24 16:10:42,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:43,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132847058] [2023-12-24 16:10:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132847058] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:43,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:43,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 19 [2023-12-24 16:10:43,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645096829] [2023-12-24 16:10:43,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:43,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:10:43,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:10:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:10:43,151 INFO L87 Difference]: Start difference. First operand 1177 states and 1638 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:43,807 INFO L93 Difference]: Finished difference Result 2848 states and 3985 transitions. [2023-12-24 16:10:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:10:43,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 16:10:43,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:43,812 INFO L225 Difference]: With dead ends: 2848 [2023-12-24 16:10:43,812 INFO L226 Difference]: Without dead ends: 2011 [2023-12-24 16:10:43,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:10:43,814 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 186 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:43,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 931 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:10:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2023-12-24 16:10:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1286. [2023-12-24 16:10:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1210 states have (on average 1.3884297520661157) internal successors, (1680), 1215 states have internal predecessors, (1680), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:10:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1788 transitions. [2023-12-24 16:10:43,861 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1788 transitions. Word has length 106 [2023-12-24 16:10:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:43,861 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1788 transitions. [2023-12-24 16:10:43,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:43,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1788 transitions. [2023-12-24 16:10:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 16:10:43,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:43,862 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:43,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:44,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:44,072 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:44,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:44,073 INFO L85 PathProgramCache]: Analyzing trace with hash -633898562, now seen corresponding path program 1 times [2023-12-24 16:10:44,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:44,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25753874] [2023-12-24 16:10:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:44,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:44,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:44,074 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:44,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 16:10:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:44,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 16:10:44,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:44,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-12-24 16:10:44,839 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 30 treesize of output 22 [2023-12-24 16:10:44,842 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 23 [2023-12-24 16:10:44,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:10:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-24 16:10:44,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:45,098 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 41 treesize of output 33 [2023-12-24 16:10:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:45,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:45,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25753874] [2023-12-24 16:10:45,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25753874] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:45,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:45,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 20 [2023-12-24 16:10:45,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413056735] [2023-12-24 16:10:45,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:45,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:10:45,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:10:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:10:45,398 INFO L87 Difference]: Start difference. First operand 1286 states and 1788 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:46,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:46,386 INFO L93 Difference]: Finished difference Result 2885 states and 4038 transitions. [2023-12-24 16:10:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:10:46,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 16:10:46,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:46,391 INFO L225 Difference]: With dead ends: 2885 [2023-12-24 16:10:46,392 INFO L226 Difference]: Without dead ends: 1991 [2023-12-24 16:10:46,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2023-12-24 16:10:46,393 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 360 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:46,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 947 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:10:46,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2023-12-24 16:10:46,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1172. [2023-12-24 16:10:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1096 states have (on average 1.3868613138686132) internal successors, (1520), 1101 states have internal predecessors, (1520), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 16:10:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1628 transitions. [2023-12-24 16:10:46,440 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1628 transitions. Word has length 106 [2023-12-24 16:10:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:46,440 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1628 transitions. [2023-12-24 16:10:46,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1628 transitions. [2023-12-24 16:10:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-24 16:10:46,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:46,442 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:46,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:46,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:46,648 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:46,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:46,649 INFO L85 PathProgramCache]: Analyzing trace with hash 628755032, now seen corresponding path program 1 times [2023-12-24 16:10:46,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:46,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114321859] [2023-12-24 16:10:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:46,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:46,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:46,650 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:46,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 16:10:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:46,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:10:46,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 2 proven. 114 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:10:47,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:47,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:47,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114321859] [2023-12-24 16:10:47,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114321859] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:47,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:47,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 16:10:47,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191033773] [2023-12-24 16:10:47,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:47,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:47,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:47,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:47,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:10:47,242 INFO L87 Difference]: Start difference. First operand 1172 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:47,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:47,368 INFO L93 Difference]: Finished difference Result 2816 states and 3945 transitions. [2023-12-24 16:10:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:10:47,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 107 [2023-12-24 16:10:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:47,374 INFO L225 Difference]: With dead ends: 2816 [2023-12-24 16:10:47,374 INFO L226 Difference]: Without dead ends: 1989 [2023-12-24 16:10:47,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:10:47,376 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 164 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:47,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 480 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:10:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2023-12-24 16:10:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1859. [2023-12-24 16:10:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1737 states have (on average 1.3926309729418538) internal successors, (2419), 1748 states have internal predecessors, (2419), 84 states have call successors, (84), 37 states have call predecessors, (84), 37 states have return successors, (84), 73 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-24 16:10:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2587 transitions. [2023-12-24 16:10:47,448 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2587 transitions. Word has length 107 [2023-12-24 16:10:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:47,448 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2587 transitions. [2023-12-24 16:10:47,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2587 transitions. [2023-12-24 16:10:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-24 16:10:47,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:47,450 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:47,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:47,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:47,656 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:47,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash 847609750, now seen corresponding path program 1 times [2023-12-24 16:10:47,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:47,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745001029] [2023-12-24 16:10:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:47,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:47,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:47,658 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:47,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 16:10:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:47,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:10:47,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:48,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:10:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:10:48,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:48,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:48,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745001029] [2023-12-24 16:10:48,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745001029] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:48,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:48,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2023-12-24 16:10:48,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602693842] [2023-12-24 16:10:48,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:48,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:10:48,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:48,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:10:48,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:10:48,841 INFO L87 Difference]: Start difference. First operand 1859 states and 2587 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:49,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:49,242 INFO L93 Difference]: Finished difference Result 3597 states and 4986 transitions. [2023-12-24 16:10:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:10:49,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 107 [2023-12-24 16:10:49,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:49,266 INFO L225 Difference]: With dead ends: 3597 [2023-12-24 16:10:49,266 INFO L226 Difference]: Without dead ends: 2225 [2023-12-24 16:10:49,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:10:49,268 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 235 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:49,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 722 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:10:49,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2023-12-24 16:10:49,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 1747. [2023-12-24 16:10:49,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1631 states have (on average 1.3881054567749846) internal successors, (2264), 1639 states have internal predecessors, (2264), 78 states have call successors, (78), 37 states have call predecessors, (78), 37 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 16:10:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2420 transitions. [2023-12-24 16:10:49,342 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2420 transitions. Word has length 107 [2023-12-24 16:10:49,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:49,343 INFO L495 AbstractCegarLoop]: Abstraction has 1747 states and 2420 transitions. [2023-12-24 16:10:49,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2420 transitions. [2023-12-24 16:10:49,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 16:10:49,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:49,344 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:49,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:49,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:49,551 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:49,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:49,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1202393385, now seen corresponding path program 1 times [2023-12-24 16:10:49,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:49,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674502386] [2023-12-24 16:10:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:49,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:49,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:49,553 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:49,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 16:10:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:49,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:10:49,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:49,917 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 79 treesize of output 43 [2023-12-24 16:10:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 44 proven. 40 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:10:49,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:50,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:10:50,053 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-24 16:10:50,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:50,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674502386] [2023-12-24 16:10:50,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674502386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:10:50,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:10:50,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 16:10:50,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438940572] [2023-12-24 16:10:50,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:10:50,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:10:50,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:50,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:10:50,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:10:50,054 INFO L87 Difference]: Start difference. First operand 1747 states and 2420 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-24 16:10:50,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:50,490 INFO L93 Difference]: Finished difference Result 3284 states and 4538 transitions. [2023-12-24 16:10:50,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:10:50,491 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 108 [2023-12-24 16:10:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:50,495 INFO L225 Difference]: With dead ends: 3284 [2023-12-24 16:10:50,495 INFO L226 Difference]: Without dead ends: 1787 [2023-12-24 16:10:50,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:10:50,498 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 124 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:50,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 693 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:10:50,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2023-12-24 16:10:50,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1743. [2023-12-24 16:10:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1627 states have (on average 1.38660110633067) internal successors, (2256), 1635 states have internal predecessors, (2256), 78 states have call successors, (78), 37 states have call predecessors, (78), 37 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 16:10:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2412 transitions. [2023-12-24 16:10:50,574 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2412 transitions. Word has length 108 [2023-12-24 16:10:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:50,574 INFO L495 AbstractCegarLoop]: Abstraction has 1743 states and 2412 transitions. [2023-12-24 16:10:50,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-24 16:10:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2412 transitions. [2023-12-24 16:10:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 16:10:50,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:50,576 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:50,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:50,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:50,785 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:50,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:50,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1708088815, now seen corresponding path program 1 times [2023-12-24 16:10:50,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:50,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088263272] [2023-12-24 16:10:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:50,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:50,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:50,787 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:50,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 16:10:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:51,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:10:51,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:51,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:10:51,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 16:10:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:10:51,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:51,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:51,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088263272] [2023-12-24 16:10:51,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088263272] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:51,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:51,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:10:51,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864362122] [2023-12-24 16:10:51,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:51,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:51,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:51,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:51,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:10:51,810 INFO L87 Difference]: Start difference. First operand 1743 states and 2412 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:52,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:52,028 INFO L93 Difference]: Finished difference Result 3177 states and 4372 transitions. [2023-12-24 16:10:52,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:10:52,028 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-24 16:10:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:52,031 INFO L225 Difference]: With dead ends: 3177 [2023-12-24 16:10:52,031 INFO L226 Difference]: Without dead ends: 1907 [2023-12-24 16:10:52,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:10:52,033 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 40 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:52,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 465 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:10:52,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2023-12-24 16:10:52,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1835. [2023-12-24 16:10:52,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1835 states, 1719 states have (on average 1.3810354857475275) internal successors, (2374), 1727 states have internal predecessors, (2374), 78 states have call successors, (78), 37 states have call predecessors, (78), 37 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 16:10:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2530 transitions. [2023-12-24 16:10:52,105 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2530 transitions. Word has length 108 [2023-12-24 16:10:52,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:52,105 INFO L495 AbstractCegarLoop]: Abstraction has 1835 states and 2530 transitions. [2023-12-24 16:10:52,105 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:52,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2530 transitions. [2023-12-24 16:10:52,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 16:10:52,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:52,107 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:52,118 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 (31)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:52,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:52,314 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:52,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2065288915, now seen corresponding path program 1 times [2023-12-24 16:10:52,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:52,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532524062] [2023-12-24 16:10:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:52,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:52,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:52,316 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:52,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 16:10:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:52,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:10:52,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-24 16:10:52,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:52,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:52,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532524062] [2023-12-24 16:10:52,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532524062] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:52,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:52,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-12-24 16:10:52,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213229426] [2023-12-24 16:10:52,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:52,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:52,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:52,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:52,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:10:52,862 INFO L87 Difference]: Start difference. First operand 1835 states and 2530 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:53,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:53,060 INFO L93 Difference]: Finished difference Result 3346 states and 4605 transitions. [2023-12-24 16:10:53,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:10:53,061 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-24 16:10:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:53,064 INFO L225 Difference]: With dead ends: 3346 [2023-12-24 16:10:53,064 INFO L226 Difference]: Without dead ends: 1984 [2023-12-24 16:10:53,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:10:53,066 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 156 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:53,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 330 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:10:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2023-12-24 16:10:53,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1835. [2023-12-24 16:10:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1835 states, 1719 states have (on average 1.3787085514834205) internal successors, (2370), 1727 states have internal predecessors, (2370), 78 states have call successors, (78), 37 states have call predecessors, (78), 37 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 16:10:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2526 transitions. [2023-12-24 16:10:53,139 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2526 transitions. Word has length 108 [2023-12-24 16:10:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:53,140 INFO L495 AbstractCegarLoop]: Abstraction has 1835 states and 2526 transitions. [2023-12-24 16:10:53,140 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2526 transitions. [2023-12-24 16:10:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 16:10:53,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:53,141 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:53,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:53,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:53,348 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:53,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1807123477, now seen corresponding path program 1 times [2023-12-24 16:10:53,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:53,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570963159] [2023-12-24 16:10:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:53,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:53,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:53,350 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:53,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 16:10:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:53,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:10:53,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 2 proven. 114 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:10:53,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:53,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:53,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570963159] [2023-12-24 16:10:53,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570963159] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:53,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:53,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 16:10:53,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511791704] [2023-12-24 16:10:53,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:53,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:53,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:53,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:10:53,888 INFO L87 Difference]: Start difference. First operand 1835 states and 2526 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:54,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:54,027 INFO L93 Difference]: Finished difference Result 3245 states and 4455 transitions. [2023-12-24 16:10:54,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:10:54,027 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-24 16:10:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:54,030 INFO L225 Difference]: With dead ends: 3245 [2023-12-24 16:10:54,030 INFO L226 Difference]: Without dead ends: 1883 [2023-12-24 16:10:54,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:10:54,034 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 111 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:54,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 575 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:10:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2023-12-24 16:10:54,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1844. [2023-12-24 16:10:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1725 states have (on average 1.3721739130434782) internal successors, (2367), 1733 states have internal predecessors, (2367), 78 states have call successors, (78), 40 states have call predecessors, (78), 40 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 16:10:54,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2523 transitions. [2023-12-24 16:10:54,108 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2523 transitions. Word has length 108 [2023-12-24 16:10:54,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:54,108 INFO L495 AbstractCegarLoop]: Abstraction has 1844 states and 2523 transitions. [2023-12-24 16:10:54,108 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:54,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2523 transitions. [2023-12-24 16:10:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 16:10:54,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:54,117 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:54,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:54,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:54,323 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:54,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:54,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1378736768, now seen corresponding path program 1 times [2023-12-24 16:10:54,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:54,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311607622] [2023-12-24 16:10:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:54,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:54,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:54,325 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:54,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 16:10:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:54,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:10:54,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-24 16:10:54,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:54,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:54,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311607622] [2023-12-24 16:10:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311607622] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:54,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:54,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-12-24 16:10:54,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460770087] [2023-12-24 16:10:54,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:54,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:54,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:54,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:54,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:10:54,855 INFO L87 Difference]: Start difference. First operand 1844 states and 2523 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:55,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:55,073 INFO L93 Difference]: Finished difference Result 3377 states and 4610 transitions. [2023-12-24 16:10:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:10:55,074 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-24 16:10:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:55,076 INFO L225 Difference]: With dead ends: 3377 [2023-12-24 16:10:55,076 INFO L226 Difference]: Without dead ends: 2006 [2023-12-24 16:10:55,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:10:55,078 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 137 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:55,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 478 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:10:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2023-12-24 16:10:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1844. [2023-12-24 16:10:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1725 states have (on average 1.3704347826086956) internal successors, (2364), 1733 states have internal predecessors, (2364), 78 states have call successors, (78), 40 states have call predecessors, (78), 40 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 16:10:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2520 transitions. [2023-12-24 16:10:55,156 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2520 transitions. Word has length 108 [2023-12-24 16:10:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:55,156 INFO L495 AbstractCegarLoop]: Abstraction has 1844 states and 2520 transitions. [2023-12-24 16:10:55,156 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2520 transitions. [2023-12-24 16:10:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 16:10:55,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:55,158 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:55,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:55,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:55,364 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:55,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1746151260, now seen corresponding path program 1 times [2023-12-24 16:10:55,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:55,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681608414] [2023-12-24 16:10:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:55,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:55,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:55,366 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:55,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 16:10:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:55,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:10:55,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:10:56,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:56,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:56,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681608414] [2023-12-24 16:10:56,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681608414] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:56,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:56,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:10:56,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326923332] [2023-12-24 16:10:56,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:56,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:56,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:56,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:10:56,467 INFO L87 Difference]: Start difference. First operand 1844 states and 2520 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:56,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:56,857 INFO L93 Difference]: Finished difference Result 3593 states and 4855 transitions. [2023-12-24 16:10:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:10:56,858 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-24 16:10:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:56,861 INFO L225 Difference]: With dead ends: 3593 [2023-12-24 16:10:56,861 INFO L226 Difference]: Without dead ends: 2144 [2023-12-24 16:10:56,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:10:56,863 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 92 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:56,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 429 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:10:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2023-12-24 16:10:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1625. [2023-12-24 16:10:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1506 states have (on average 1.3598937583001327) internal successors, (2048), 1514 states have internal predecessors, (2048), 78 states have call successors, (78), 40 states have call predecessors, (78), 40 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 16:10:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2204 transitions. [2023-12-24 16:10:56,932 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2204 transitions. Word has length 108 [2023-12-24 16:10:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:56,933 INFO L495 AbstractCegarLoop]: Abstraction has 1625 states and 2204 transitions. [2023-12-24 16:10:56,933 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:56,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2204 transitions. [2023-12-24 16:10:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 16:10:56,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:56,934 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:56,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 16:10:57,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:57,144 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:57,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:57,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1212575640, now seen corresponding path program 1 times [2023-12-24 16:10:57,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:57,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353704605] [2023-12-24 16:10:57,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:57,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:57,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:57,146 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:57,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 16:10:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:57,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:10:57,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:10:58,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2023-12-24 16:10:58,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 16:10:58,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 16:10:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:10:58,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:10:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:10:58,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:10:58,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353704605] [2023-12-24 16:10:58,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353704605] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:10:58,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:10:58,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:10:58,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081883205] [2023-12-24 16:10:58,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:10:58,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:10:58,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:10:58,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:10:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:10:58,455 INFO L87 Difference]: Start difference. First operand 1625 states and 2204 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:10:58,841 INFO L93 Difference]: Finished difference Result 3762 states and 5051 transitions. [2023-12-24 16:10:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:10:58,842 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-24 16:10:58,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:10:58,845 INFO L225 Difference]: With dead ends: 3762 [2023-12-24 16:10:58,846 INFO L226 Difference]: Without dead ends: 2520 [2023-12-24 16:10:58,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:10:58,847 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 176 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:10:58,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 524 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:10:58,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2023-12-24 16:10:58,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 1685. [2023-12-24 16:10:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1566 states have (on average 1.3537675606641124) internal successors, (2120), 1574 states have internal predecessors, (2120), 78 states have call successors, (78), 40 states have call predecessors, (78), 40 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 16:10:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2276 transitions. [2023-12-24 16:10:58,932 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2276 transitions. Word has length 108 [2023-12-24 16:10:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:10:58,933 INFO L495 AbstractCegarLoop]: Abstraction has 1685 states and 2276 transitions. [2023-12-24 16:10:58,933 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:10:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2276 transitions. [2023-12-24 16:10:58,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 16:10:58,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:10:58,934 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:10:58,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-12-24 16:10:59,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:59,141 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:10:59,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:10:59,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1018615012, now seen corresponding path program 1 times [2023-12-24 16:10:59,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:10:59,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075883677] [2023-12-24 16:10:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:10:59,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:10:59,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:10:59,143 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:10:59,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-24 16:10:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:10:59,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 16:10:59,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:00,153 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 28 treesize of output 24 [2023-12-24 16:11:00,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:11:00,481 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 88 treesize of output 68 [2023-12-24 16:11:00,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2023-12-24 16:11:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:11:00,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:11:01,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075883677] [2023-12-24 16:11:01,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075883677] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:01,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:11:01,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [23] total 31 [2023-12-24 16:11:01,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827768015] [2023-12-24 16:11:01,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:11:01,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:11:01,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:01,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:11:01,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:11:01,052 INFO L87 Difference]: Start difference. First operand 1685 states and 2276 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:01,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:01,896 INFO L93 Difference]: Finished difference Result 3784 states and 5087 transitions. [2023-12-24 16:11:01,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:11:01,898 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-24 16:11:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:01,901 INFO L225 Difference]: With dead ends: 3784 [2023-12-24 16:11:01,902 INFO L226 Difference]: Without dead ends: 2516 [2023-12-24 16:11:01,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 16:11:01,904 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 267 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:01,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1442 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:11:01,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2023-12-24 16:11:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1865. [2023-12-24 16:11:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1746 states have (on average 1.3562428407789233) internal successors, (2368), 1754 states have internal predecessors, (2368), 78 states have call successors, (78), 40 states have call predecessors, (78), 40 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 16:11:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2524 transitions. [2023-12-24 16:11:01,986 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2524 transitions. Word has length 108 [2023-12-24 16:11:01,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:01,986 INFO L495 AbstractCegarLoop]: Abstraction has 1865 states and 2524 transitions. [2023-12-24 16:11:01,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:01,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2524 transitions. [2023-12-24 16:11:01,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 16:11:01,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:01,988 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:02,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-24 16:11:02,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:02,195 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:02,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1159163622, now seen corresponding path program 1 times [2023-12-24 16:11:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:02,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533661593] [2023-12-24 16:11:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:02,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:02,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:02,197 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:02,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-24 16:11:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:02,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:11:02,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:02,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:11:02,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 16:11:02,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:11:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 16:11:02,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:11:02,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:02,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533661593] [2023-12-24 16:11:02,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533661593] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:02,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:11:02,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-12-24 16:11:02,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780812110] [2023-12-24 16:11:02,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:11:02,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:11:02,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:02,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:11:02,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:11:02,772 INFO L87 Difference]: Start difference. First operand 1865 states and 2524 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:03,117 INFO L93 Difference]: Finished difference Result 3359 states and 4511 transitions. [2023-12-24 16:11:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:11:03,118 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-24 16:11:03,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:03,121 INFO L225 Difference]: With dead ends: 3359 [2023-12-24 16:11:03,121 INFO L226 Difference]: Without dead ends: 1911 [2023-12-24 16:11:03,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:11:03,123 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 87 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:03,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 538 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:11:03,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2023-12-24 16:11:03,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1673. [2023-12-24 16:11:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1554 states have (on average 1.351994851994852) internal successors, (2101), 1562 states have internal predecessors, (2101), 78 states have call successors, (78), 40 states have call predecessors, (78), 40 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 16:11:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2257 transitions. [2023-12-24 16:11:03,215 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2257 transitions. Word has length 108 [2023-12-24 16:11:03,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:03,215 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 2257 transitions. [2023-12-24 16:11:03,216 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:03,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2257 transitions. [2023-12-24 16:11:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 16:11:03,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:03,217 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:03,226 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 (38)] Forceful destruction successful, exit code 0 [2023-12-24 16:11:03,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:03,424 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:03,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:03,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1164301209, now seen corresponding path program 1 times [2023-12-24 16:11:03,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:03,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125373771] [2023-12-24 16:11:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:03,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:03,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:03,426 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:03,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-24 16:11:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:03,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:11:03,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:04,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:11:04,359 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 128 treesize of output 92 [2023-12-24 16:11:04,360 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 138 treesize of output 78 [2023-12-24 16:11:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 1 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:11:04,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:04,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:04,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125373771] [2023-12-24 16:11:04,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125373771] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:04,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [844167158] [2023-12-24 16:11:04,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:04,573 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:11:04,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:11:04,574 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:11:04,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2023-12-24 16:11:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:05,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 16:11:05,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:06,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:11:06,859 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2023-12-24 16:11:06,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 16:11:07,087 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 128 treesize of output 92 [2023-12-24 16:11:07,089 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 138 treesize of output 78 [2023-12-24 16:11:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 1 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:11:07,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:07,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [844167158] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:07,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:11:07,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-12-24 16:11:07,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315058105] [2023-12-24 16:11:07,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:11:07,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 16:11:07,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 16:11:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:11:07,211 INFO L87 Difference]: Start difference. First operand 1673 states and 2257 transitions. Second operand has 23 states, 21 states have (on average 5.238095238095238) internal successors, (110), 20 states have internal predecessors, (110), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 16:11:11,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:11,094 INFO L93 Difference]: Finished difference Result 2197 states and 2875 transitions. [2023-12-24 16:11:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-24 16:11:11,095 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 5.238095238095238) internal successors, (110), 20 states have internal predecessors, (110), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 108 [2023-12-24 16:11:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:11,098 INFO L225 Difference]: With dead ends: 2197 [2023-12-24 16:11:11,098 INFO L226 Difference]: Without dead ends: 2195 [2023-12-24 16:11:11,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=590, Invalid=3316, Unknown=0, NotChecked=0, Total=3906 [2023-12-24 16:11:11,100 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 717 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:11,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 2283 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 16:11:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2023-12-24 16:11:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 1608. [2023-12-24 16:11:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1487 states have (on average 1.351714862138534) internal successors, (2010), 1495 states have internal predecessors, (2010), 78 states have call successors, (78), 42 states have call predecessors, (78), 42 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 16:11:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2166 transitions. [2023-12-24 16:11:11,196 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2166 transitions. Word has length 108 [2023-12-24 16:11:11,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:11,196 INFO L495 AbstractCegarLoop]: Abstraction has 1608 states and 2166 transitions. [2023-12-24 16:11:11,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 5.238095238095238) internal successors, (110), 20 states have internal predecessors, (110), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 16:11:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2166 transitions. [2023-12-24 16:11:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 16:11:11,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:11,197 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:11,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-12-24 16:11:11,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2023-12-24 16:11:11,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:11:11,604 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:11,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:11,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1931696472, now seen corresponding path program 1 times [2023-12-24 16:11:11,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:11,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455611577] [2023-12-24 16:11:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:11,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:11,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:11,605 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:11,606 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 (41)] Waiting until timeout for monitored process [2023-12-24 16:11:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:11,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:11:11,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:12,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-24 16:11:12,458 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 30 treesize of output 18 [2023-12-24 16:11:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:11:12,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:11:12,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:12,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455611577] [2023-12-24 16:11:12,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455611577] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:12,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:11:12,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:11:12,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449431582] [2023-12-24 16:11:12,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:11:12,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:11:12,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:12,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:11:12,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:11:12,623 INFO L87 Difference]: Start difference. First operand 1608 states and 2166 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:12,863 INFO L93 Difference]: Finished difference Result 2815 states and 3779 transitions. [2023-12-24 16:11:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:11:12,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 109 [2023-12-24 16:11:12,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:12,865 INFO L225 Difference]: With dead ends: 2815 [2023-12-24 16:11:12,866 INFO L226 Difference]: Without dead ends: 1652 [2023-12-24 16:11:12,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:11:12,867 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 55 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:12,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 482 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:11:12,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2023-12-24 16:11:12,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1305. [2023-12-24 16:11:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 1229 states have (on average 1.3742880390561432) internal successors, (1689), 1231 states have internal predecessors, (1689), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 16:11:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1785 transitions. [2023-12-24 16:11:12,917 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1785 transitions. Word has length 109 [2023-12-24 16:11:12,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:12,917 INFO L495 AbstractCegarLoop]: Abstraction has 1305 states and 1785 transitions. [2023-12-24 16:11:12,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:12,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1785 transitions. [2023-12-24 16:11:12,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:11:12,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:12,918 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:12,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-12-24 16:11:13,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:13,119 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:13,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:13,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1082873341, now seen corresponding path program 1 times [2023-12-24 16:11:13,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:13,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150423132] [2023-12-24 16:11:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:13,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:13,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:13,120 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:13,121 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 (42)] Waiting until timeout for monitored process [2023-12-24 16:11:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:13,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:11:13,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:13,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:11:13,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 16:11:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:11:13,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:11:13,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:13,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150423132] [2023-12-24 16:11:13,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150423132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:11:13,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:11:13,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:11:13,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756162391] [2023-12-24 16:11:13,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:11:13,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:11:13,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:13,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:11:13,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:11:13,412 INFO L87 Difference]: Start difference. First operand 1305 states and 1785 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:13,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:13,610 INFO L93 Difference]: Finished difference Result 3122 states and 4267 transitions. [2023-12-24 16:11:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:11:13,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2023-12-24 16:11:13,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:13,613 INFO L225 Difference]: With dead ends: 3122 [2023-12-24 16:11:13,613 INFO L226 Difference]: Without dead ends: 2226 [2023-12-24 16:11:13,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:11:13,617 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 201 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:13,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1234 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:11:13,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2023-12-24 16:11:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1808. [2023-12-24 16:11:13,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1808 states, 1732 states have (on average 1.3672055427251733) internal successors, (2368), 1734 states have internal predecessors, (2368), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 16:11:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2464 transitions. [2023-12-24 16:11:13,694 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2464 transitions. Word has length 111 [2023-12-24 16:11:13,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:13,694 INFO L495 AbstractCegarLoop]: Abstraction has 1808 states and 2464 transitions. [2023-12-24 16:11:13,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:13,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2464 transitions. [2023-12-24 16:11:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:11:13,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:13,695 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:13,706 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 (42)] Forceful destruction successful, exit code 0 [2023-12-24 16:11:13,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:13,896 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:13,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:13,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1823505882, now seen corresponding path program 1 times [2023-12-24 16:11:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:13,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545020203] [2023-12-24 16:11:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:13,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:13,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:13,899 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:13,905 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 (43)] Waiting until timeout for monitored process [2023-12-24 16:11:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:14,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:11:14,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:14,678 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 50 treesize of output 38 [2023-12-24 16:11:14,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:11:14,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:11:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:11:14,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:15,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-24 16:11:15,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:15,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545020203] [2023-12-24 16:11:15,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545020203] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:15,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [980097171] [2023-12-24 16:11:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:15,225 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:11:15,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:11:15,226 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:11:15,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2023-12-24 16:11:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:15,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 16:11:15,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:16,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:11:16,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:11:17,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:11:17,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 16:11:18,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 16:11:18,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 16:11:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 188 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-24 16:11:18,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:18,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-12-24 16:11:18,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [980097171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:18,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:11:18,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2023-12-24 16:11:18,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772836305] [2023-12-24 16:11:18,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:11:18,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-24 16:11:18,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:18,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-24 16:11:18,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1613, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 16:11:18,783 INFO L87 Difference]: Start difference. First operand 1808 states and 2464 transitions. Second operand has 31 states, 27 states have (on average 4.777777777777778) internal successors, (129), 26 states have internal predecessors, (129), 11 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) [2023-12-24 16:11:23,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:23,151 INFO L93 Difference]: Finished difference Result 3349 states and 4501 transitions. [2023-12-24 16:11:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-24 16:11:23,152 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 4.777777777777778) internal successors, (129), 26 states have internal predecessors, (129), 11 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) Word has length 111 [2023-12-24 16:11:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:23,154 INFO L225 Difference]: With dead ends: 3349 [2023-12-24 16:11:23,154 INFO L226 Difference]: Without dead ends: 2086 [2023-12-24 16:11:23,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 298 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1964 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1553, Invalid=6279, Unknown=0, NotChecked=0, Total=7832 [2023-12-24 16:11:23,157 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 939 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:23,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1185 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 16:11:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2023-12-24 16:11:23,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1826. [2023-12-24 16:11:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1750 states have (on average 1.3651428571428572) internal successors, (2389), 1752 states have internal predecessors, (2389), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 16:11:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2485 transitions. [2023-12-24 16:11:23,219 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2485 transitions. Word has length 111 [2023-12-24 16:11:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:23,219 INFO L495 AbstractCegarLoop]: Abstraction has 1826 states and 2485 transitions. [2023-12-24 16:11:23,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 4.777777777777778) internal successors, (129), 26 states have internal predecessors, (129), 11 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) [2023-12-24 16:11:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2485 transitions. [2023-12-24 16:11:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:11:23,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:23,220 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:23,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2023-12-24 16:11:23,428 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 (43)] Forceful destruction successful, exit code 0 [2023-12-24 16:11:23,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:23,621 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:23,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:23,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1834779595, now seen corresponding path program 1 times [2023-12-24 16:11:23,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:23,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722291588] [2023-12-24 16:11:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:23,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:23,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:23,623 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:23,623 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 (45)] Waiting until timeout for monitored process [2023-12-24 16:11:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:23,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:11:23,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:24,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:11:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:11:24,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:24,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:24,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722291588] [2023-12-24 16:11:24,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722291588] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:24,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [93021211] [2023-12-24 16:11:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:24,117 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:11:24,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:11:24,118 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:11:24,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2023-12-24 16:11:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:24,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:11:24,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:24,726 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 56 treesize of output 44 [2023-12-24 16:11:24,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2023-12-24 16:11:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:11:24,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:11:24,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [93021211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:11:24,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:11:24,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-24 16:11:24,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050152153] [2023-12-24 16:11:24,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:11:24,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:11:24,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:24,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:11:24,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:11:24,761 INFO L87 Difference]: Start difference. First operand 1826 states and 2485 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:25,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:25,158 INFO L93 Difference]: Finished difference Result 4019 states and 5532 transitions. [2023-12-24 16:11:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:11:25,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 16:11:25,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:25,161 INFO L225 Difference]: With dead ends: 4019 [2023-12-24 16:11:25,161 INFO L226 Difference]: Without dead ends: 2602 [2023-12-24 16:11:25,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:11:25,163 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 70 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:25,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 722 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:11:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2023-12-24 16:11:25,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 1970. [2023-12-24 16:11:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1894 states have (on average 1.3753959873284054) internal successors, (2605), 1896 states have internal predecessors, (2605), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 16:11:25,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2701 transitions. [2023-12-24 16:11:25,230 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2701 transitions. Word has length 113 [2023-12-24 16:11:25,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:25,230 INFO L495 AbstractCegarLoop]: Abstraction has 1970 states and 2701 transitions. [2023-12-24 16:11:25,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:25,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2701 transitions. [2023-12-24 16:11:25,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:11:25,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:25,231 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:25,241 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 (45)] Forceful destruction successful, exit code 0 [2023-12-24 16:11:25,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (46)] Ended with exit code 0 [2023-12-24 16:11:25,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:11:25,639 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:25,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2053634313, now seen corresponding path program 1 times [2023-12-24 16:11:25,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:25,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363853164] [2023-12-24 16:11:25,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:25,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:25,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:25,641 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:25,641 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 (47)] Waiting until timeout for monitored process [2023-12-24 16:11:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:25,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:11:25,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:26,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:11:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:11:26,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:26,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:26,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363853164] [2023-12-24 16:11:26,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363853164] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:26,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [228722549] [2023-12-24 16:11:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:26,144 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:11:26,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:11:26,145 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:11:26,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2023-12-24 16:11:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:26,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:11:26,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:26,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 16:11:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:11:26,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:11:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [228722549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:11:26,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:11:26,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-24 16:11:26,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341916968] [2023-12-24 16:11:26,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:11:26,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:11:26,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:26,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:11:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:11:26,837 INFO L87 Difference]: Start difference. First operand 1970 states and 2701 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:27,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:27,207 INFO L93 Difference]: Finished difference Result 4043 states and 5510 transitions. [2023-12-24 16:11:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:11:27,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 16:11:27,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:27,210 INFO L225 Difference]: With dead ends: 4043 [2023-12-24 16:11:27,211 INFO L226 Difference]: Without dead ends: 2682 [2023-12-24 16:11:27,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:11:27,212 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 118 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:27,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 780 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:11:27,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2023-12-24 16:11:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2502. [2023-12-24 16:11:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2426 states have (on average 1.3639736191261336) internal successors, (3309), 2428 states have internal predecessors, (3309), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 16:11:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3405 transitions. [2023-12-24 16:11:27,284 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3405 transitions. Word has length 113 [2023-12-24 16:11:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:27,284 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3405 transitions. [2023-12-24 16:11:27,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3405 transitions. [2023-12-24 16:11:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:11:27,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:27,286 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:27,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2023-12-24 16:11:27,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2023-12-24 16:11:27,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:27,687 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:27,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:27,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1660607303, now seen corresponding path program 1 times [2023-12-24 16:11:27,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:27,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405584231] [2023-12-24 16:11:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:27,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:27,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:27,689 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:27,690 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 (49)] Waiting until timeout for monitored process [2023-12-24 16:11:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:27,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:11:27,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:28,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:11:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:11:28,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:28,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:28,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405584231] [2023-12-24 16:11:28,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405584231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:28,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1284292010] [2023-12-24 16:11:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:28,224 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:11:28,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:11:28,225 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:11:28,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2023-12-24 16:11:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:28,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:11:28,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:28,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:11:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:11:29,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:11:29,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1284292010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:11:29,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:11:29,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-24 16:11:29,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371611291] [2023-12-24 16:11:29,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:11:29,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:11:29,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:29,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:11:29,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:11:29,565 INFO L87 Difference]: Start difference. First operand 2502 states and 3405 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:31,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:11:31,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:31,720 INFO L93 Difference]: Finished difference Result 5190 states and 7019 transitions. [2023-12-24 16:11:31,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:11:31,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 16:11:31,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:31,723 INFO L225 Difference]: With dead ends: 5190 [2023-12-24 16:11:31,723 INFO L226 Difference]: Without dead ends: 3449 [2023-12-24 16:11:31,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:11:31,726 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 175 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:31,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 590 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 16:11:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2023-12-24 16:11:31,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 3318. [2023-12-24 16:11:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3318 states, 3189 states have (on average 1.3471307619943556) internal successors, (4296), 3193 states have internal predecessors, (4296), 82 states have call successors, (82), 46 states have call predecessors, (82), 46 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 16:11:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 4460 transitions. [2023-12-24 16:11:31,859 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 4460 transitions. Word has length 113 [2023-12-24 16:11:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:31,859 INFO L495 AbstractCegarLoop]: Abstraction has 3318 states and 4460 transitions. [2023-12-24 16:11:31,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 4460 transitions. [2023-12-24 16:11:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:11:31,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:31,861 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:31,867 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 (49)] Forceful destruction successful, exit code 0 [2023-12-24 16:11:32,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (50)] Forceful destruction successful, exit code 0 [2023-12-24 16:11:32,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:11:32,268 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:32,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:32,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1896819209, now seen corresponding path program 1 times [2023-12-24 16:11:32,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:32,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940642568] [2023-12-24 16:11:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:32,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:32,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:32,269 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:32,270 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 (51)] Waiting until timeout for monitored process [2023-12-24 16:11:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:32,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:11:32,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:32,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:11:32,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 16:11:32,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:11:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:11:32,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:11:32,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:32,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940642568] [2023-12-24 16:11:32,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940642568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:11:32,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:11:32,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:11:32,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958789870] [2023-12-24 16:11:32,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:11:32,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:11:32,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:32,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:11:32,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:11:32,586 INFO L87 Difference]: Start difference. First operand 3318 states and 4460 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:35,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:11:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:35,755 INFO L93 Difference]: Finished difference Result 6575 states and 8759 transitions. [2023-12-24 16:11:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:11:35,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 16:11:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:35,759 INFO L225 Difference]: With dead ends: 6575 [2023-12-24 16:11:35,759 INFO L226 Difference]: Without dead ends: 4062 [2023-12-24 16:11:35,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:11:35,762 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 159 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:35,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 599 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2023-12-24 16:11:35,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2023-12-24 16:11:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 3119. [2023-12-24 16:11:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 2990 states have (on average 1.3381270903010034) internal successors, (4001), 2994 states have internal predecessors, (4001), 82 states have call successors, (82), 46 states have call predecessors, (82), 46 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 16:11:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4165 transitions. [2023-12-24 16:11:35,908 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4165 transitions. Word has length 113 [2023-12-24 16:11:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:35,908 INFO L495 AbstractCegarLoop]: Abstraction has 3119 states and 4165 transitions. [2023-12-24 16:11:35,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4165 transitions. [2023-12-24 16:11:35,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:11:35,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:35,910 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:35,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2023-12-24 16:11:36,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:36,111 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:36,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:36,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1547115137, now seen corresponding path program 1 times [2023-12-24 16:11:36,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:36,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989658651] [2023-12-24 16:11:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:36,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:36,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:36,121 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:36,122 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 (52)] Waiting until timeout for monitored process [2023-12-24 16:11:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:36,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:11:36,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:36,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:11:36,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:11:36,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:11:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:11:36,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:11:36,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989658651] [2023-12-24 16:11:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989658651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:11:36,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:11:36,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 16:11:36,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447167273] [2023-12-24 16:11:36,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:11:36,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:11:36,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:36,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:11:36,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:11:36,741 INFO L87 Difference]: Start difference. First operand 3119 states and 4165 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:37,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:37,923 INFO L93 Difference]: Finished difference Result 4363 states and 5667 transitions. [2023-12-24 16:11:37,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:11:37,924 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 16:11:37,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:37,928 INFO L225 Difference]: With dead ends: 4363 [2023-12-24 16:11:37,928 INFO L226 Difference]: Without dead ends: 4361 [2023-12-24 16:11:37,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:11:37,929 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 111 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:37,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1683 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:11:37,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2023-12-24 16:11:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 3622. [2023-12-24 16:11:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3493 states have (on average 1.3232178643000285) internal successors, (4622), 3497 states have internal predecessors, (4622), 82 states have call successors, (82), 46 states have call predecessors, (82), 46 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 16:11:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 4786 transitions. [2023-12-24 16:11:38,056 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 4786 transitions. Word has length 113 [2023-12-24 16:11:38,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:38,056 INFO L495 AbstractCegarLoop]: Abstraction has 3622 states and 4786 transitions. [2023-12-24 16:11:38,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 4786 transitions. [2023-12-24 16:11:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:11:38,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:38,059 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:38,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Ended with exit code 0 [2023-12-24 16:11:38,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:38,265 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:38,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:38,266 INFO L85 PathProgramCache]: Analyzing trace with hash 227892225, now seen corresponding path program 1 times [2023-12-24 16:11:38,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:38,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711846908] [2023-12-24 16:11:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:38,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:38,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:38,267 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:38,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2023-12-24 16:11:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:38,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:11:38,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:40,019 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 85 treesize of output 49 [2023-12-24 16:11:40,024 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 73 treesize of output 37 [2023-12-24 16:11:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:11:40,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:11:40,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:40,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711846908] [2023-12-24 16:11:40,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711846908] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:40,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:11:40,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 16:11:40,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83456633] [2023-12-24 16:11:40,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:11:40,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:11:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:40,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:11:40,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:11:40,416 INFO L87 Difference]: Start difference. First operand 3622 states and 4786 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:40,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:40,861 INFO L93 Difference]: Finished difference Result 6477 states and 8551 transitions. [2023-12-24 16:11:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:11:40,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 16:11:40,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:40,866 INFO L225 Difference]: With dead ends: 6477 [2023-12-24 16:11:40,866 INFO L226 Difference]: Without dead ends: 3756 [2023-12-24 16:11:40,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:11:40,869 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 124 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:40,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 497 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:11:40,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3756 states. [2023-12-24 16:11:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3756 to 3622. [2023-12-24 16:11:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3493 states have (on average 1.3226452905811623) internal successors, (4620), 3497 states have internal predecessors, (4620), 82 states have call successors, (82), 46 states have call predecessors, (82), 46 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 16:11:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 4784 transitions. [2023-12-24 16:11:41,019 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 4784 transitions. Word has length 113 [2023-12-24 16:11:41,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:41,019 INFO L495 AbstractCegarLoop]: Abstraction has 3622 states and 4784 transitions. [2023-12-24 16:11:41,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:41,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 4784 transitions. [2023-12-24 16:11:41,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:11:41,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:41,022 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:41,029 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 (53)] Forceful destruction successful, exit code 0 [2023-12-24 16:11:41,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:41,229 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:41,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash 942413825, now seen corresponding path program 1 times [2023-12-24 16:11:41,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:41,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975859746] [2023-12-24 16:11:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:41,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:41,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:41,231 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:41,248 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 (54)] Waiting until timeout for monitored process [2023-12-24 16:11:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:41,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:11:41,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:43,045 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 86 treesize of output 50 [2023-12-24 16:11:43,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 50 [2023-12-24 16:11:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:11:43,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:11:43,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975859746] [2023-12-24 16:11:43,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975859746] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:43,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:11:43,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 16:11:43,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208873316] [2023-12-24 16:11:43,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:11:43,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:11:43,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:11:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:11:43,464 INFO L87 Difference]: Start difference. First operand 3622 states and 4784 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:11:43,828 INFO L93 Difference]: Finished difference Result 6387 states and 8442 transitions. [2023-12-24 16:11:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:11:43,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 16:11:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:11:43,832 INFO L225 Difference]: With dead ends: 6387 [2023-12-24 16:11:43,832 INFO L226 Difference]: Without dead ends: 3666 [2023-12-24 16:11:43,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:11:43,835 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 124 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:11:43,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 440 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:11:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2023-12-24 16:11:43,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 2417. [2023-12-24 16:11:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2347 states have (on average 1.3012356199403494) internal successors, (3054), 2350 states have internal predecessors, (3054), 42 states have call successors, (42), 27 states have call predecessors, (42), 27 states have return successors, (42), 39 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 16:11:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3138 transitions. [2023-12-24 16:11:43,920 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3138 transitions. Word has length 113 [2023-12-24 16:11:43,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:11:43,920 INFO L495 AbstractCegarLoop]: Abstraction has 2417 states and 3138 transitions. [2023-12-24 16:11:43,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:11:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3138 transitions. [2023-12-24 16:11:43,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:11:43,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:11:43,922 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:11:43,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Ended with exit code 0 [2023-12-24 16:11:44,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:44,122 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:11:44,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:11:44,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1577546109, now seen corresponding path program 1 times [2023-12-24 16:11:44,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:11:44,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100459923] [2023-12-24 16:11:44,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:44,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:11:44,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:11:44,125 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:11:44,126 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 (55)] Waiting until timeout for monitored process [2023-12-24 16:11:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:44,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 16:11:44,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:44,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:11:45,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:11:45,122 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 97 treesize of output 49 [2023-12-24 16:11:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 16:11:45,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:45,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:11:45,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100459923] [2023-12-24 16:11:45,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100459923] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:45,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1703895094] [2023-12-24 16:11:45,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:11:45,579 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:11:45,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:11:45,581 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:11:45,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2023-12-24 16:11:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:11:46,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-24 16:11:46,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:11:48,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:11:48,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:11:49,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:11:50,324 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2023-12-24 16:11:50,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 16:11:50,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:11:50,925 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 101 treesize of output 53 [2023-12-24 16:11:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:11:51,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:11:51,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1703895094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:11:51,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:11:51,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 27 [2023-12-24 16:11:51,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761480440] [2023-12-24 16:11:51,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:11:51,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 16:11:51,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:11:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 16:11:51,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 16:11:51,339 INFO L87 Difference]: Start difference. First operand 2417 states and 3138 transitions. Second operand has 28 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 5 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-12-24 16:11:58,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:12:02,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:12:07,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:12:11,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:12:15,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:12:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:12:21,000 INFO L93 Difference]: Finished difference Result 5842 states and 7575 transitions. [2023-12-24 16:12:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-24 16:12:21,001 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 5 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 113 [2023-12-24 16:12:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:12:21,006 INFO L225 Difference]: With dead ends: 5842 [2023-12-24 16:12:21,006 INFO L226 Difference]: Without dead ends: 5840 [2023-12-24 16:12:21,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 256 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=661, Invalid=4889, Unknown=0, NotChecked=0, Total=5550 [2023-12-24 16:12:21,009 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 754 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 135 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 3767 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:12:21,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 3767 Invalid, 2229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2089 Invalid, 5 Unknown, 0 Unchecked, 24.7s Time] [2023-12-24 16:12:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2023-12-24 16:12:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 4858. [2023-12-24 16:12:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4858 states, 4708 states have (on average 1.298428207306712) internal successors, (6113), 4717 states have internal predecessors, (6113), 91 states have call successors, (91), 58 states have call predecessors, (91), 58 states have return successors, (91), 82 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-24 16:12:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 6295 transitions. [2023-12-24 16:12:21,244 INFO L78 Accepts]: Start accepts. Automaton has 4858 states and 6295 transitions. Word has length 113 [2023-12-24 16:12:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:12:21,245 INFO L495 AbstractCegarLoop]: Abstraction has 4858 states and 6295 transitions. [2023-12-24 16:12:21,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 5 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-12-24 16:12:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4858 states and 6295 transitions. [2023-12-24 16:12:21,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:12:21,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:12:21,248 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:12:21,255 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 (55)] Forceful destruction successful, exit code 0 [2023-12-24 16:12:21,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (56)] Forceful destruction successful, exit code 0 [2023-12-24 16:12:21,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:21,660 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:12:21,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:12:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1329399615, now seen corresponding path program 1 times [2023-12-24 16:12:21,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:12:21,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115451897] [2023-12-24 16:12:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:21,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:21,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:12:21,663 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:12:21,696 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 (57)] Waiting until timeout for monitored process [2023-12-24 16:12:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:21,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:12:21,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 16:12:21,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:12:21,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:12:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115451897] [2023-12-24 16:12:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115451897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:12:21,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:12:21,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:12:21,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614351031] [2023-12-24 16:12:21,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:12:21,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:12:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:12:21,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:12:21,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:12:21,961 INFO L87 Difference]: Start difference. First operand 4858 states and 6295 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 16:12:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:12:22,196 INFO L93 Difference]: Finished difference Result 9156 states and 11903 transitions. [2023-12-24 16:12:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:12:22,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2023-12-24 16:12:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:12:22,205 INFO L225 Difference]: With dead ends: 9156 [2023-12-24 16:12:22,205 INFO L226 Difference]: Without dead ends: 4879 [2023-12-24 16:12:22,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:12:22,209 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 7 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:12:22,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 388 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:12:22,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2023-12-24 16:12:22,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4858. [2023-12-24 16:12:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4858 states, 4708 states have (on average 1.2971537807986406) internal successors, (6107), 4717 states have internal predecessors, (6107), 91 states have call successors, (91), 58 states have call predecessors, (91), 58 states have return successors, (91), 82 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-24 16:12:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 6289 transitions. [2023-12-24 16:12:22,403 INFO L78 Accepts]: Start accepts. Automaton has 4858 states and 6289 transitions. Word has length 113 [2023-12-24 16:12:22,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:12:22,403 INFO L495 AbstractCegarLoop]: Abstraction has 4858 states and 6289 transitions. [2023-12-24 16:12:22,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 16:12:22,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4858 states and 6289 transitions. [2023-12-24 16:12:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 16:12:22,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:12:22,416 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:12:22,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2023-12-24 16:12:22,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:22,628 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:12:22,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:12:22,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1957190004, now seen corresponding path program 1 times [2023-12-24 16:12:22,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:12:22,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16631628] [2023-12-24 16:12:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:22,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:22,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:12:22,630 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:12:22,663 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 (58)] Waiting until timeout for monitored process [2023-12-24 16:12:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:22,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:12:22,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:23,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:12:23,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 16:12:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:12:23,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:12:23,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:12:23,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16631628] [2023-12-24 16:12:23,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16631628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:12:23,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2108920374] [2023-12-24 16:12:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:23,861 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:23,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:12:23,864 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:12:23,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2023-12-24 16:12:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:24,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:12:24,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:24,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 16:12:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:12:27,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:12:27,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2108920374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:12:27,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:12:27,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 22 [2023-12-24 16:12:27,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483190583] [2023-12-24 16:12:27,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:12:27,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:12:27,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:12:27,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:12:27,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:12:27,370 INFO L87 Difference]: Start difference. First operand 4858 states and 6289 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:12:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:12:27,922 INFO L93 Difference]: Finished difference Result 8766 states and 11389 transitions. [2023-12-24 16:12:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:12:27,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2023-12-24 16:12:27,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:12:27,927 INFO L225 Difference]: With dead ends: 8766 [2023-12-24 16:12:27,928 INFO L226 Difference]: Without dead ends: 5002 [2023-12-24 16:12:27,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 237 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:12:27,932 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 73 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:12:27,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 825 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:12:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5002 states. [2023-12-24 16:12:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5002 to 4858. [2023-12-24 16:12:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4858 states, 4708 states have (on average 1.2954545454545454) internal successors, (6099), 4717 states have internal predecessors, (6099), 91 states have call successors, (91), 58 states have call predecessors, (91), 58 states have return successors, (91), 82 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-24 16:12:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 6281 transitions. [2023-12-24 16:12:28,142 INFO L78 Accepts]: Start accepts. Automaton has 4858 states and 6281 transitions. Word has length 114 [2023-12-24 16:12:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:12:28,142 INFO L495 AbstractCegarLoop]: Abstraction has 4858 states and 6281 transitions. [2023-12-24 16:12:28,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:12:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4858 states and 6281 transitions. [2023-12-24 16:12:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 16:12:28,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:12:28,144 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:12:28,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (59)] Ended with exit code 0 [2023-12-24 16:12:28,351 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 (58)] Forceful destruction successful, exit code 0 [2023-12-24 16:12:28,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:28,545 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:12:28,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:12:28,546 INFO L85 PathProgramCache]: Analyzing trace with hash -304162719, now seen corresponding path program 1 times [2023-12-24 16:12:28,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:12:28,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932258874] [2023-12-24 16:12:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:28,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:28,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:12:28,547 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:12:28,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2023-12-24 16:12:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:28,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:12:28,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:29,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:12:29,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:12:29,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 16:12:29,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 16:12:29,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:12:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:12:29,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:12:29,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2023-12-24 16:12:29,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:12:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932258874] [2023-12-24 16:12:29,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932258874] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:12:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1317125158] [2023-12-24 16:12:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:29,945 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:29,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:12:29,946 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:12:29,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2023-12-24 16:12:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:30,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:12:30,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:30,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 16:12:30,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:12:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:12:30,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:12:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1317125158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:12:30,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:12:30,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 22 [2023-12-24 16:12:30,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142498913] [2023-12-24 16:12:30,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:12:30,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:12:30,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:12:30,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:12:30,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:12:30,831 INFO L87 Difference]: Start difference. First operand 4858 states and 6281 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:12:31,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:12:31,614 INFO L93 Difference]: Finished difference Result 8752 states and 11265 transitions. [2023-12-24 16:12:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:12:31,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2023-12-24 16:12:31,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:12:31,619 INFO L225 Difference]: With dead ends: 8752 [2023-12-24 16:12:31,620 INFO L226 Difference]: Without dead ends: 4756 [2023-12-24 16:12:31,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:12:31,624 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 80 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:12:31,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 690 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:12:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2023-12-24 16:12:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 4286. [2023-12-24 16:12:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4136 states have (on average 1.2840909090909092) internal successors, (5311), 4145 states have internal predecessors, (5311), 91 states have call successors, (91), 58 states have call predecessors, (91), 58 states have return successors, (91), 82 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-24 16:12:31,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 5493 transitions. [2023-12-24 16:12:31,831 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 5493 transitions. Word has length 114 [2023-12-24 16:12:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:12:31,831 INFO L495 AbstractCegarLoop]: Abstraction has 4286 states and 5493 transitions. [2023-12-24 16:12:31,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:12:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 5493 transitions. [2023-12-24 16:12:31,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 16:12:31,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:12:31,834 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:12:31,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Ended with exit code 0 [2023-12-24 16:12:32,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (61)] Ended with exit code 0 [2023-12-24 16:12:32,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:32,234 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:12:32,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:12:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1169944434, now seen corresponding path program 1 times [2023-12-24 16:12:32,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:12:32,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555888076] [2023-12-24 16:12:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:32,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:32,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:12:32,236 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:12:32,245 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 (62)] Waiting until timeout for monitored process [2023-12-24 16:12:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:32,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:12:32,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:33,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:12:33,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:12:33,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 16:12:33,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 16:12:33,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:12:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:12:33,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:12:33,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2023-12-24 16:12:33,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:12:33,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555888076] [2023-12-24 16:12:33,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555888076] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:12:33,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1218451985] [2023-12-24 16:12:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:33,575 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:33,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:12:33,576 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:12:33,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2023-12-24 16:12:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:34,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:12:34,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:34,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 16:12:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:12:34,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:12:34,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1218451985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:12:34,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:12:34,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2023-12-24 16:12:34,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294323331] [2023-12-24 16:12:34,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:12:34,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:12:34,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:12:34,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:12:34,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:12:34,319 INFO L87 Difference]: Start difference. First operand 4286 states and 5493 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:12:34,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:12:34,804 INFO L93 Difference]: Finished difference Result 8152 states and 10461 transitions. [2023-12-24 16:12:34,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:12:34,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 115 [2023-12-24 16:12:34,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:12:34,811 INFO L225 Difference]: With dead ends: 8152 [2023-12-24 16:12:34,811 INFO L226 Difference]: Without dead ends: 4728 [2023-12-24 16:12:34,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:12:34,814 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 155 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:12:34,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 779 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:12:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2023-12-24 16:12:35,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4665. [2023-12-24 16:12:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4665 states, 4453 states have (on average 1.2732988996182348) internal successors, (5670), 4466 states have internal predecessors, (5670), 129 states have call successors, (129), 82 states have call predecessors, (129), 82 states have return successors, (129), 116 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-24 16:12:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4665 states to 4665 states and 5928 transitions. [2023-12-24 16:12:35,104 INFO L78 Accepts]: Start accepts. Automaton has 4665 states and 5928 transitions. Word has length 115 [2023-12-24 16:12:35,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:12:35,105 INFO L495 AbstractCegarLoop]: Abstraction has 4665 states and 5928 transitions. [2023-12-24 16:12:35,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:12:35,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4665 states and 5928 transitions. [2023-12-24 16:12:35,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 16:12:35,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:12:35,108 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:12:35,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Ended with exit code 0 [2023-12-24 16:12:35,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (63)] Ended with exit code 0 [2023-12-24 16:12:35,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:35,513 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:12:35,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:12:35,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1756750448, now seen corresponding path program 1 times [2023-12-24 16:12:35,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:12:35,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072451179] [2023-12-24 16:12:35,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:35,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:35,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:12:35,514 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:12:35,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2023-12-24 16:12:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:35,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:12:35,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:36,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:12:36,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:12:36,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 16:12:36,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 16:12:36,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:12:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 188 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 16:12:37,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:12:37,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2023-12-24 16:12:37,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:12:37,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072451179] [2023-12-24 16:12:37,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072451179] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:12:37,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [730518079] [2023-12-24 16:12:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:37,393 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:37,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:12:37,394 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:12:37,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2023-12-24 16:12:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:37,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:12:37,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:38,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:12:38,330 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 23 [2023-12-24 16:12:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:12:38,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:12:38,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [730518079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:12:38,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:12:38,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 23 [2023-12-24 16:12:38,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977639504] [2023-12-24 16:12:38,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:12:38,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:12:38,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:12:38,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:12:38,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=737, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:12:38,454 INFO L87 Difference]: Start difference. First operand 4665 states and 5928 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:12:39,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:12:39,374 INFO L93 Difference]: Finished difference Result 8612 states and 10971 transitions. [2023-12-24 16:12:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:12:39,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 115 [2023-12-24 16:12:39,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:12:39,379 INFO L225 Difference]: With dead ends: 8612 [2023-12-24 16:12:39,380 INFO L226 Difference]: Without dead ends: 4809 [2023-12-24 16:12:39,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:12:39,383 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 89 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:12:39,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 854 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:12:39,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2023-12-24 16:12:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4665. [2023-12-24 16:12:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4665 states, 4453 states have (on average 1.2715023579609253) internal successors, (5662), 4466 states have internal predecessors, (5662), 129 states have call successors, (129), 82 states have call predecessors, (129), 82 states have return successors, (129), 116 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-24 16:12:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4665 states to 4665 states and 5920 transitions. [2023-12-24 16:12:39,659 INFO L78 Accepts]: Start accepts. Automaton has 4665 states and 5920 transitions. Word has length 115 [2023-12-24 16:12:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:12:39,659 INFO L495 AbstractCegarLoop]: Abstraction has 4665 states and 5920 transitions. [2023-12-24 16:12:39,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:12:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4665 states and 5920 transitions. [2023-12-24 16:12:39,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 16:12:39,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:12:39,662 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:12:39,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (65)] Ended with exit code 0 [2023-12-24 16:12:39,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Ended with exit code 0 [2023-12-24 16:12:40,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:40,069 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:12:40,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:12:40,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1511223555, now seen corresponding path program 1 times [2023-12-24 16:12:40,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:12:40,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787359650] [2023-12-24 16:12:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:40,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:40,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:12:40,071 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:12:40,073 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 (66)] Waiting until timeout for monitored process [2023-12-24 16:12:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:40,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 16:12:40,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:41,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:12:41,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:12:41,199 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 47 [2023-12-24 16:12:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 16:12:41,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:12:41,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:12:41,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787359650] [2023-12-24 16:12:41,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787359650] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:12:41,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [430346345] [2023-12-24 16:12:41,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:41,760 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:41,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:12:41,761 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:12:41,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (67)] Waiting until timeout for monitored process [2023-12-24 16:12:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:42,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 16:12:42,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:43,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:12:44,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:12:44,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:12:44,672 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 47 [2023-12-24 16:12:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 16:12:44,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:12:44,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [430346345] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:12:44,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:12:44,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2023-12-24 16:12:44,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553704974] [2023-12-24 16:12:44,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:12:44,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 16:12:44,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:12:44,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 16:12:44,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1233, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 16:12:44,895 INFO L87 Difference]: Start difference. First operand 4665 states and 5920 transitions. Second operand has 29 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 16:12:48,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:12:48,403 INFO L93 Difference]: Finished difference Result 7163 states and 9036 transitions. [2023-12-24 16:12:48,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-24 16:12:48,403 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 115 [2023-12-24 16:12:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:12:48,410 INFO L225 Difference]: With dead ends: 7163 [2023-12-24 16:12:48,410 INFO L226 Difference]: Without dead ends: 7161 [2023-12-24 16:12:48,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 258 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=573, Invalid=3087, Unknown=0, NotChecked=0, Total=3660 [2023-12-24 16:12:48,412 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 512 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:12:48,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 3519 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 16:12:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7161 states. [2023-12-24 16:12:48,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7161 to 6171. [2023-12-24 16:12:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6171 states, 5954 states have (on average 1.282499160228418) internal successors, (7636), 5966 states have internal predecessors, (7636), 131 states have call successors, (131), 85 states have call predecessors, (131), 85 states have return successors, (131), 119 states have call predecessors, (131), 131 states have call successors, (131) [2023-12-24 16:12:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6171 states to 6171 states and 7898 transitions. [2023-12-24 16:12:48,733 INFO L78 Accepts]: Start accepts. Automaton has 6171 states and 7898 transitions. Word has length 115 [2023-12-24 16:12:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:12:48,733 INFO L495 AbstractCegarLoop]: Abstraction has 6171 states and 7898 transitions. [2023-12-24 16:12:48,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 16:12:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6171 states and 7898 transitions. [2023-12-24 16:12:48,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 16:12:48,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:12:48,737 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:12:48,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Ended with exit code 0 [2023-12-24 16:12:48,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (67)] Ended with exit code 0 [2023-12-24 16:12:49,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:49,137 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:12:49,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:12:49,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1087576833, now seen corresponding path program 1 times [2023-12-24 16:12:49,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:12:49,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018957527] [2023-12-24 16:12:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:49,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:49,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:12:49,139 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:12:49,140 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 (68)] Waiting until timeout for monitored process [2023-12-24 16:12:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:49,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:12:49,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-24 16:12:49,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:12:49,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:12:49,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018957527] [2023-12-24 16:12:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018957527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:12:49,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:12:49,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:12:49,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139378082] [2023-12-24 16:12:49,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:12:49,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:12:49,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:12:49,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:12:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:12:49,434 INFO L87 Difference]: Start difference. First operand 6171 states and 7898 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 16:12:49,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:12:49,781 INFO L93 Difference]: Finished difference Result 9485 states and 12149 transitions. [2023-12-24 16:12:49,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:12:49,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2023-12-24 16:12:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:12:49,785 INFO L225 Difference]: With dead ends: 9485 [2023-12-24 16:12:49,785 INFO L226 Difference]: Without dead ends: 4054 [2023-12-24 16:12:49,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:12:49,788 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 7 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:12:49,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 547 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:12:49,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2023-12-24 16:12:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 3989. [2023-12-24 16:12:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3989 states, 3837 states have (on average 1.2830336200156371) internal successors, (4923), 3843 states have internal predecessors, (4923), 91 states have call successors, (91), 60 states have call predecessors, (91), 60 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-24 16:12:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3989 states to 3989 states and 5105 transitions. [2023-12-24 16:12:49,983 INFO L78 Accepts]: Start accepts. Automaton has 3989 states and 5105 transitions. Word has length 115 [2023-12-24 16:12:49,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:12:49,983 INFO L495 AbstractCegarLoop]: Abstraction has 3989 states and 5105 transitions. [2023-12-24 16:12:49,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 16:12:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3989 states and 5105 transitions. [2023-12-24 16:12:49,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 16:12:49,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:12:49,986 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:12:49,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Ended with exit code 0 [2023-12-24 16:12:50,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:50,188 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:12:50,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:12:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash -955619374, now seen corresponding path program 1 times [2023-12-24 16:12:50,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:12:50,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079793756] [2023-12-24 16:12:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:50,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:50,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:12:50,190 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:12:50,196 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 (69)] Waiting until timeout for monitored process [2023-12-24 16:12:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:50,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:12:50,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:50,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:12:51,118 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 128 treesize of output 92 [2023-12-24 16:12:51,129 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 140 treesize of output 80 [2023-12-24 16:12:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:12:51,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:12:51,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:12:51,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079793756] [2023-12-24 16:12:51,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079793756] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:12:51,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1356348277] [2023-12-24 16:12:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:51,371 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:51,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:12:51,372 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:12:51,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2023-12-24 16:12:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:52,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 16:12:52,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:52,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:12:53,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:12:53,338 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 128 treesize of output 92 [2023-12-24 16:12:53,340 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 140 treesize of output 80 [2023-12-24 16:12:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:12:53,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:12:53,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1356348277] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:12:53,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:12:53,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2023-12-24 16:12:53,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803501519] [2023-12-24 16:12:53,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:12:53,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 16:12:53,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:12:53,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 16:12:53,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:12:53,490 INFO L87 Difference]: Start difference. First operand 3989 states and 5105 transitions. Second operand has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 17 states have internal predecessors, (119), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 16:12:55,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:12:55,244 INFO L93 Difference]: Finished difference Result 8152 states and 10390 transitions. [2023-12-24 16:12:55,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 16:12:55,245 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 17 states have internal predecessors, (119), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 116 [2023-12-24 16:12:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:12:55,251 INFO L225 Difference]: With dead ends: 8152 [2023-12-24 16:12:55,251 INFO L226 Difference]: Without dead ends: 8150 [2023-12-24 16:12:55,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 16:12:55,252 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 534 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:12:55,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1633 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 16:12:55,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8150 states. [2023-12-24 16:12:55,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8150 to 5323. [2023-12-24 16:12:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 5159 states have (on average 1.3054855592169026) internal successors, (6735), 5162 states have internal predecessors, (6735), 97 states have call successors, (97), 66 states have call predecessors, (97), 66 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-24 16:12:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 6929 transitions. [2023-12-24 16:12:55,487 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 6929 transitions. Word has length 116 [2023-12-24 16:12:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:12:55,487 INFO L495 AbstractCegarLoop]: Abstraction has 5323 states and 6929 transitions. [2023-12-24 16:12:55,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 17 states have internal predecessors, (119), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 16:12:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 6929 transitions. [2023-12-24 16:12:55,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 16:12:55,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:12:55,490 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:12:55,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Ended with exit code 0 [2023-12-24 16:12:55,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (70)] Ended with exit code 0 [2023-12-24 16:12:55,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:55,890 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:12:55,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:12:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 348218542, now seen corresponding path program 1 times [2023-12-24 16:12:55,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:12:55,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599332484] [2023-12-24 16:12:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:55,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:12:55,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:12:55,892 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:12:55,892 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 (71)] Waiting until timeout for monitored process [2023-12-24 16:12:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:56,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:12:56,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:56,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:12:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:12:56,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:12:56,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:12:56,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599332484] [2023-12-24 16:12:56,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599332484] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:12:56,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [70105671] [2023-12-24 16:12:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:12:56,464 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:12:56,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:12:56,465 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:12:56,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2023-12-24 16:12:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:12:56,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:12:56,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:12:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:12:57,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:12:57,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [70105671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:12:57,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:12:57,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-24 16:12:57,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146758058] [2023-12-24 16:12:57,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:12:57,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:12:57,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:12:57,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:12:57,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:12:57,771 INFO L87 Difference]: Start difference. First operand 5323 states and 6929 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:12:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:12:59,352 INFO L93 Difference]: Finished difference Result 11333 states and 14808 transitions. [2023-12-24 16:12:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:12:59,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 116 [2023-12-24 16:12:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:12:59,361 INFO L225 Difference]: With dead ends: 11333 [2023-12-24 16:12:59,361 INFO L226 Difference]: Without dead ends: 7167 [2023-12-24 16:12:59,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:12:59,363 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 85 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:12:59,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 549 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 16:12:59,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2023-12-24 16:12:59,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 6663. [2023-12-24 16:12:59,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6663 states, 6499 states have (on average 1.3091244806893367) internal successors, (8508), 6502 states have internal predecessors, (8508), 97 states have call successors, (97), 66 states have call predecessors, (97), 66 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-24 16:12:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6663 states to 6663 states and 8702 transitions. [2023-12-24 16:12:59,601 INFO L78 Accepts]: Start accepts. Automaton has 6663 states and 8702 transitions. Word has length 116 [2023-12-24 16:12:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:12:59,601 INFO L495 AbstractCegarLoop]: Abstraction has 6663 states and 8702 transitions. [2023-12-24 16:12:59,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:12:59,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6663 states and 8702 transitions. [2023-12-24 16:12:59,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 16:12:59,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:12:59,605 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:12:59,614 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 (71)] Forceful destruction successful, exit code 0 [2023-12-24 16:12:59,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (72)] Forceful destruction successful, exit code 0 [2023-12-24 16:13:00,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:13:00,013 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:13:00,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:13:00,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1028276912, now seen corresponding path program 1 times [2023-12-24 16:13:00,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:13:00,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657313556] [2023-12-24 16:13:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:13:00,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:13:00,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:13:00,014 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:13:00,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2023-12-24 16:13:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:13:00,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:13:00,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:13:00,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:13:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:13:00,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:13:00,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:13:00,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657313556] [2023-12-24 16:13:00,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657313556] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:13:00,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [988465537] [2023-12-24 16:13:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:13:00,638 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:13:00,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:13:00,639 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:13:00,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (74)] Waiting until timeout for monitored process [2023-12-24 16:13:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:13:01,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:13:01,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:13:01,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:13:01,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:13:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:13:01,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:13:01,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [988465537] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:13:01,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:13:01,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-24 16:13:01,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252787229] [2023-12-24 16:13:01,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:13:01,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 16:13:01,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:13:01,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 16:13:01,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:13:01,853 INFO L87 Difference]: Start difference. First operand 6663 states and 8702 transitions. Second operand has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 16:13:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:13:02,715 INFO L93 Difference]: Finished difference Result 10690 states and 13953 transitions. [2023-12-24 16:13:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:13:02,717 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 116 [2023-12-24 16:13:02,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:13:02,722 INFO L225 Difference]: With dead ends: 10690 [2023-12-24 16:13:02,722 INFO L226 Difference]: Without dead ends: 5082 [2023-12-24 16:13:02,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:13:02,727 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 287 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:13:02,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 515 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:13:02,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2023-12-24 16:13:02,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 5026. [2023-12-24 16:13:02,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 4862 states have (on average 1.2943233237350884) internal successors, (6293), 4865 states have internal predecessors, (6293), 97 states have call successors, (97), 66 states have call predecessors, (97), 66 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-24 16:13:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 6487 transitions. [2023-12-24 16:13:02,972 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 6487 transitions. Word has length 116 [2023-12-24 16:13:02,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:13:02,972 INFO L495 AbstractCegarLoop]: Abstraction has 5026 states and 6487 transitions. [2023-12-24 16:13:02,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 16:13:02,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 6487 transitions. [2023-12-24 16:13:02,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 16:13:02,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:13:02,976 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:13:02,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (74)] Ended with exit code 0 [2023-12-24 16:13:03,183 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 (73)] Forceful destruction successful, exit code 0 [2023-12-24 16:13:03,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:13:03,377 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:13:03,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:13:03,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1204553945, now seen corresponding path program 1 times [2023-12-24 16:13:03,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:13:03,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123592795] [2023-12-24 16:13:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:13:03,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:13:03,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:13:03,379 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:13:03,380 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 (75)] Waiting until timeout for monitored process [2023-12-24 16:13:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:13:03,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:13:03,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:13:03,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:13:03,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:13:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:13:03,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:13:04,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 16:13:04,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:13:04,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123592795] [2023-12-24 16:13:04,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123592795] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:13:04,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2076557443] [2023-12-24 16:13:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:13:04,151 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:13:04,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:13:04,152 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:13:04,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (76)] Waiting until timeout for monitored process [2023-12-24 16:13:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:13:04,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:13:04,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:13:05,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:13:05,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-24 16:13:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:13:05,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:13:05,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2076557443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:13:05,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:13:05,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-24 16:13:05,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107112636] [2023-12-24 16:13:05,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:13:05,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:13:05,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:13:05,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:13:05,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:13:05,222 INFO L87 Difference]: Start difference. First operand 5026 states and 6487 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:13:06,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:13:06,315 INFO L93 Difference]: Finished difference Result 9111 states and 11795 transitions. [2023-12-24 16:13:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:13:06,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 117 [2023-12-24 16:13:06,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:13:06,322 INFO L225 Difference]: With dead ends: 9111 [2023-12-24 16:13:06,322 INFO L226 Difference]: Without dead ends: 5140 [2023-12-24 16:13:06,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:13:06,326 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 108 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:13:06,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 823 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:13:06,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5140 states. [2023-12-24 16:13:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5140 to 5026. [2023-12-24 16:13:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 4862 states have (on average 1.29062114356232) internal successors, (6275), 4865 states have internal predecessors, (6275), 97 states have call successors, (97), 66 states have call predecessors, (97), 66 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-24 16:13:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 6469 transitions. [2023-12-24 16:13:06,589 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 6469 transitions. Word has length 117 [2023-12-24 16:13:06,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:13:06,589 INFO L495 AbstractCegarLoop]: Abstraction has 5026 states and 6469 transitions. [2023-12-24 16:13:06,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:13:06,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 6469 transitions. [2023-12-24 16:13:06,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 16:13:06,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:13:06,593 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:13:06,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (76)] Ended with exit code 0 [2023-12-24 16:13:06,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Ended with exit code 0 [2023-12-24 16:13:06,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:13:06,996 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:13:06,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:13:06,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1081116967, now seen corresponding path program 1 times [2023-12-24 16:13:06,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:13:06,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472550751] [2023-12-24 16:13:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:13:06,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:13:06,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:13:06,998 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:13:06,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2023-12-24 16:13:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:13:07,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:13:07,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:13:07,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:13:07,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:13:07,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-24 16:13:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 158 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-24 16:13:07,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:13:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:13:07,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:13:07,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472550751] [2023-12-24 16:13:07,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472550751] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:13:07,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:13:07,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-24 16:13:07,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108955036] [2023-12-24 16:13:07,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:13:07,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:13:07,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:13:07,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:13:07,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:13:07,919 INFO L87 Difference]: Start difference. First operand 5026 states and 6469 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:13:08,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:13:08,521 INFO L93 Difference]: Finished difference Result 9177 states and 11813 transitions. [2023-12-24 16:13:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:13:08,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 118 [2023-12-24 16:13:08,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:13:08,528 INFO L225 Difference]: With dead ends: 9177 [2023-12-24 16:13:08,528 INFO L226 Difference]: Without dead ends: 5206 [2023-12-24 16:13:08,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:13:08,532 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 57 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:13:08,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 532 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:13:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2023-12-24 16:13:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 4990. [2023-12-24 16:13:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4990 states, 4826 states have (on average 1.29092416079569) internal successors, (6230), 4829 states have internal predecessors, (6230), 97 states have call successors, (97), 66 states have call predecessors, (97), 66 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-24 16:13:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4990 states to 4990 states and 6424 transitions. [2023-12-24 16:13:08,770 INFO L78 Accepts]: Start accepts. Automaton has 4990 states and 6424 transitions. Word has length 118 [2023-12-24 16:13:08,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:13:08,770 INFO L495 AbstractCegarLoop]: Abstraction has 4990 states and 6424 transitions. [2023-12-24 16:13:08,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:13:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4990 states and 6424 transitions. [2023-12-24 16:13:08,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 16:13:08,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:13:08,773 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:13:08,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Ended with exit code 0 [2023-12-24 16:13:08,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:13:08,974 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:13:08,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:13:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash -816828041, now seen corresponding path program 1 times [2023-12-24 16:13:08,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:13:08,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974335354] [2023-12-24 16:13:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:13:08,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:13:08,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:13:08,975 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:13:08,976 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 (78)] Waiting until timeout for monitored process [2023-12-24 16:13:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:13:09,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:13:09,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:13:09,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:13:09,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-24 16:13:09,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 16:13:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 158 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-24 16:13:09,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:13:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:13:09,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:13:09,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974335354] [2023-12-24 16:13:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974335354] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:13:09,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:13:09,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-24 16:13:09,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013942076] [2023-12-24 16:13:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:13:09,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:13:09,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:13:09,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:13:09,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:13:09,888 INFO L87 Difference]: Start difference. First operand 4990 states and 6424 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:13:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:13:10,367 INFO L93 Difference]: Finished difference Result 9035 states and 11645 transitions. [2023-12-24 16:13:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:13:10,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 118 [2023-12-24 16:13:10,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:13:10,374 INFO L225 Difference]: With dead ends: 9035 [2023-12-24 16:13:10,374 INFO L226 Difference]: Without dead ends: 5092 [2023-12-24 16:13:10,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:13:10,378 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 77 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:13:10,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 401 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:13:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5092 states. [2023-12-24 16:13:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5092 to 4974. [2023-12-24 16:13:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4974 states, 4810 states have (on average 1.2885654885654885) internal successors, (6198), 4813 states have internal predecessors, (6198), 97 states have call successors, (97), 66 states have call predecessors, (97), 66 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-24 16:13:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4974 states to 4974 states and 6392 transitions. [2023-12-24 16:13:10,628 INFO L78 Accepts]: Start accepts. Automaton has 4974 states and 6392 transitions. Word has length 118 [2023-12-24 16:13:10,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:13:10,629 INFO L495 AbstractCegarLoop]: Abstraction has 4974 states and 6392 transitions. [2023-12-24 16:13:10,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:13:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4974 states and 6392 transitions. [2023-12-24 16:13:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 16:13:10,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:13:10,631 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:13:10,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Ended with exit code 0 [2023-12-24 16:13:10,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:13:10,832 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:13:10,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:13:10,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2055790156, now seen corresponding path program 1 times [2023-12-24 16:13:10,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:13:10,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788122330] [2023-12-24 16:13:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:13:10,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:13:10,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:13:10,833 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:13:10,834 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 (79)] Waiting until timeout for monitored process [2023-12-24 16:13:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:13:11,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 16:13:11,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:13:11,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:13:11,993 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 128 treesize of output 92 [2023-12-24 16:13:11,994 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 138 treesize of output 78 [2023-12-24 16:13:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 1 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:13:12,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:13:12,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:13:12,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788122330] [2023-12-24 16:13:12,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788122330] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:13:12,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [778220485] [2023-12-24 16:13:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:13:12,319 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:13:12,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:13:12,319 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:13:12,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (80)] Waiting until timeout for monitored process [2023-12-24 16:13:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:13:13,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 16:13:13,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:13:13,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:13:14,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:13:14,816 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 128 treesize of output 92 [2023-12-24 16:13:14,818 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 138 treesize of output 78 [2023-12-24 16:13:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 1 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:13:14,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:13:14,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [778220485] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:13:14,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:13:14,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2023-12-24 16:13:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727717571] [2023-12-24 16:13:15,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:13:15,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 16:13:15,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:13:15,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 16:13:15,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:13:15,001 INFO L87 Difference]: Start difference. First operand 4974 states and 6392 transitions. Second operand has 24 states, 22 states have (on average 5.863636363636363) internal successors, (129), 21 states have internal predecessors, (129), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 16:13:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:13:17,635 INFO L93 Difference]: Finished difference Result 7734 states and 9736 transitions. [2023-12-24 16:13:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 16:13:17,636 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.863636363636363) internal successors, (129), 21 states have internal predecessors, (129), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 118 [2023-12-24 16:13:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:13:17,642 INFO L225 Difference]: With dead ends: 7734 [2023-12-24 16:13:17,642 INFO L226 Difference]: Without dead ends: 7732 [2023-12-24 16:13:17,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 281 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=433, Invalid=2017, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 16:13:17,643 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 360 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:13:17,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2037 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 16:13:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7732 states. [2023-12-24 16:13:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7732 to 3730. [2023-12-24 16:13:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3578 states have (on average 1.2705422023476802) internal successors, (4546), 3584 states have internal predecessors, (4546), 91 states have call successors, (91), 60 states have call predecessors, (91), 60 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-24 16:13:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4728 transitions. [2023-12-24 16:13:17,873 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4728 transitions. Word has length 118 [2023-12-24 16:13:17,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:13:17,873 INFO L495 AbstractCegarLoop]: Abstraction has 3730 states and 4728 transitions. [2023-12-24 16:13:17,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.863636363636363) internal successors, (129), 21 states have internal predecessors, (129), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 16:13:17,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4728 transitions. [2023-12-24 16:13:17,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 16:13:17,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:13:17,874 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:13:17,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (80)] Ended with exit code 0 [2023-12-24 16:13:18,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Ended with exit code 0 [2023-12-24 16:13:18,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:13:18,275 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:13:18,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:13:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1922714064, now seen corresponding path program 1 times [2023-12-24 16:13:18,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:13:18,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828961788] [2023-12-24 16:13:18,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:13:18,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:13:18,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:13:18,277 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:13:18,277 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 (81)] Waiting until timeout for monitored process [2023-12-24 16:13:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:13:18,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:13:18,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:13:18,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:13:18,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:13:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:13:18,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:13:18,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 16:13:18,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:13:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828961788] [2023-12-24 16:13:18,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828961788] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:13:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [123933873] [2023-12-24 16:13:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:13:18,947 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:13:18,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:13:18,948 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:13:18,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (82)] Waiting until timeout for monitored process [2023-12-24 16:13:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:13:19,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:13:19,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:13:19,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 16:13:19,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 16:13:19,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:13:21,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:13:23,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-24 16:13:23,984 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 57 treesize of output 37 [2023-12-24 16:13:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:13:24,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:13:24,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [123933873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:13:24,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:13:24,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [9] total 23 [2023-12-24 16:13:24,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521319473] [2023-12-24 16:13:24,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:13:24,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 16:13:24,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:13:24,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 16:13:24,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=592, Unknown=2, NotChecked=0, Total=650 [2023-12-24 16:13:24,144 INFO L87 Difference]: Start difference. First operand 3730 states and 4728 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:13:27,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:13:39,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:13:41,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:13:44,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:13:47,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:13:49,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:13:52,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:13:55,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:13:58,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:00,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:12,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:15,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:18,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:20,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:23,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:26,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:30,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:33,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:35,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:39,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:41,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:44,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:47,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:50,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:53,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:14:56,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:00,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:03,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:06,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:09,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:12,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:15,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:18,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:20,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:23,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:26,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:29,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:42,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:44,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:47,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:49,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:52,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:55,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:15:57,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:00,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:02,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:05,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:18,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:20,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:23,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:26,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:29,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:31,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:34,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:36,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:39,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:42,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:55,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:16:58,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:17:01,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:17:03,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:17:07,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:17:09,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:17:22,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:17:25,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:17:28,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:17:30,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:17:44,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:17:47,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:17:50,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:03,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:06,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:09,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:12,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:14,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:17,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:20,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:33,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:36,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:40,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:43,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:46,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:49,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:52,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:55,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:18:58,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:19:01,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:19:04,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:19:08,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:19:11,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:19:15,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:19:18,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:19:22,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:19:23,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:23,035 INFO L93 Difference]: Finished difference Result 7550 states and 9417 transitions. [2023-12-24 16:19:23,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 16:19:23,037 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 120 [2023-12-24 16:19:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:23,040 INFO L225 Difference]: With dead ends: 7550 [2023-12-24 16:19:23,041 INFO L226 Difference]: Without dead ends: 4530 [2023-12-24 16:19:23,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 96.9s TimeCoverageRelationStatistics Valid=258, Invalid=1960, Unknown=38, NotChecked=0, Total=2256 [2023-12-24 16:19:23,043 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 304 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 8 mSolverCounterUnsat, 93 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 265.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 93 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 266.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:23,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 2184 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 704 Invalid, 93 Unknown, 0 Unchecked, 266.2s Time] [2023-12-24 16:19:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4530 states. [2023-12-24 16:19:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4530 to 3905. [2023-12-24 16:19:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3905 states, 3753 states have (on average 1.2635225153210765) internal successors, (4742), 3759 states have internal predecessors, (4742), 91 states have call successors, (91), 60 states have call predecessors, (91), 60 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-24 16:19:23,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 4924 transitions. [2023-12-24 16:19:23,267 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 4924 transitions. Word has length 120 [2023-12-24 16:19:23,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:23,267 INFO L495 AbstractCegarLoop]: Abstraction has 3905 states and 4924 transitions. [2023-12-24 16:19:23,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:19:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 4924 transitions. [2023-12-24 16:19:23,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-24 16:19:23,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:23,270 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:23,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (82)] Ended with exit code 0 [2023-12-24 16:19:23,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Ended with exit code 0 [2023-12-24 16:19:23,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:23,672 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:23,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash -111988161, now seen corresponding path program 1 times [2023-12-24 16:19:23,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:23,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269568897] [2023-12-24 16:19:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:23,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:23,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:23,674 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:19:23,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2023-12-24 16:19:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:24,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 16:19:24,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:26,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:19:26,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 16:19:26,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:19:26,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:19:27,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 16:19:27,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:19:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 24 proven. 796 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-24 16:19:28,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:33,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:19:33,113 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 45 [2023-12-24 16:19:36,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2023-12-24 16:19:36,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2023-12-24 16:19:36,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2023-12-24 16:19:48,166 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 332 treesize of output 304 [2023-12-24 16:19:53,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:53,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269568897] [2023-12-24 16:19:53,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269568897] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:53,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1917259305] [2023-12-24 16:19:53,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:53,980 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:19:53,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:19:53,981 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:19:53,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (84)] Waiting until timeout for monitored process [2023-12-24 16:19:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:54,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 16:19:54,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2023-12-24 16:19:56,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:19:56,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1917259305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:19:56,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:19:56,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [24] total 26 [2023-12-24 16:19:56,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7717836] [2023-12-24 16:19:56,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:56,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 16:19:56,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:56,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 16:19:56,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 16:19:56,304 INFO L87 Difference]: Start difference. First operand 3905 states and 4924 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:19:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:56,701 INFO L93 Difference]: Finished difference Result 6978 states and 8577 transitions. [2023-12-24 16:19:56,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 16:19:56,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 203 [2023-12-24 16:19:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:56,708 INFO L225 Difference]: With dead ends: 6978 [2023-12-24 16:19:56,708 INFO L226 Difference]: Without dead ends: 3783 [2023-12-24 16:19:56,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 16:19:56,711 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 53 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:56,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 302 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:19:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2023-12-24 16:19:56,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3274. [2023-12-24 16:19:56,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3122 states have (on average 1.1969891095451635) internal successors, (3737), 3128 states have internal predecessors, (3737), 91 states have call successors, (91), 60 states have call predecessors, (91), 60 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-24 16:19:56,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 3919 transitions. [2023-12-24 16:19:56,925 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 3919 transitions. Word has length 203 [2023-12-24 16:19:56,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:56,926 INFO L495 AbstractCegarLoop]: Abstraction has 3274 states and 3919 transitions. [2023-12-24 16:19:56,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 16:19:56,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 3919 transitions. [2023-12-24 16:19:56,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-24 16:19:56,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:56,929 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:56,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Ended with exit code 0 [2023-12-24 16:19:57,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (84)] Forceful destruction successful, exit code 0 [2023-12-24 16:19:57,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:19:57,336 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:57,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:57,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1312760091, now seen corresponding path program 1 times [2023-12-24 16:19:57,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:57,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682782072] [2023-12-24 16:19:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:57,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:57,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:57,338 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:19:57,340 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 (85)] Waiting until timeout for monitored process [2023-12-24 16:19:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:57,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 16:19:57,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:02,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:20:02,162 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 16:20:02,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:20:03,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:20:07,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:20:07,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2023-12-24 16:20:08,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 52 proven. 882 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-24 16:20:08,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:20:10,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:20:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682782072] [2023-12-24 16:20:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682782072] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:20:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [611424219] [2023-12-24 16:20:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:10,319 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:20:10,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:20:10,320 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:20:10,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (86)] Waiting until timeout for monitored process [2023-12-24 16:20:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:11,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:20:11,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:14,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:20:14,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:20:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 22 proven. 617 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-12-24 16:20:15,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:20:15,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 16:20:15,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [611424219] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:20:15,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:20:15,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2023-12-24 16:20:15,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793188829] [2023-12-24 16:20:15,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:20:15,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-24 16:20:15,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:20:15,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-24 16:20:15,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 16:20:15,442 INFO L87 Difference]: Start difference. First operand 3274 states and 3919 transitions. Second operand has 31 states, 27 states have (on average 7.555555555555555) internal successors, (204), 27 states have internal predecessors, (204), 11 states have call successors, (46), 10 states have call predecessors, (46), 11 states have return successors, (46), 7 states have call predecessors, (46), 11 states have call successors, (46) [2023-12-24 16:21:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:13,677 INFO L93 Difference]: Finished difference Result 6498 states and 7638 transitions. [2023-12-24 16:21:13,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-24 16:21:13,680 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 7.555555555555555) internal successors, (204), 27 states have internal predecessors, (204), 11 states have call successors, (46), 10 states have call predecessors, (46), 11 states have return successors, (46), 7 states have call predecessors, (46), 11 states have call successors, (46) Word has length 219 [2023-12-24 16:21:13,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:13,681 INFO L225 Difference]: With dead ends: 6498 [2023-12-24 16:21:13,681 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 16:21:13,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 465 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2401 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=1730, Invalid=8370, Unknown=0, NotChecked=0, Total=10100 [2023-12-24 16:21:13,684 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1126 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:13,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 2487 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 19.0s Time] [2023-12-24 16:21:13,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 16:21:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 16:21:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 16:21:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 16:21:13,684 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 219 [2023-12-24 16:21:13,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:13,684 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 16:21:13,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 7.555555555555555) internal successors, (204), 27 states have internal predecessors, (204), 11 states have call successors, (46), 10 states have call predecessors, (46), 11 states have return successors, (46), 7 states have call predecessors, (46), 11 states have call successors, (46) [2023-12-24 16:21:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 16:21:13,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 16:21:13,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 16:21:13,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Ended with exit code 0 [2023-12-24 16:21:13,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (86)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:14,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:21:14,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:23:55,970 WARN L293 SmtUtils]: Spent 2.70m on a formula simplification. DAG size of input: 381 DAG size of output: 578 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-24 16:24:21,720 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-13-42-3-9-3-7-3-18-8-18-8-14-8-14-8-14-7-14-7-14-7-14-6-14-3-14-3-14-2-14-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-69-42-6-17-8-17-8-18-8-18-8-14-8-14-8-14-7-14-7-14-7-14-6-14-3-14-3-14-2-14-1 context. [2023-12-24 16:24:21,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:24:21,734 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 16:24:21,735 INFO L158 Benchmark]: Toolchain (without parser) took 864008.79ms. Allocated memory was 191.9MB in the beginning and 950.0MB in the end (delta: 758.1MB). Free memory was 146.9MB in the beginning and 886.8MB in the end (delta: -739.8MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. [2023-12-24 16:24:21,736 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 191.9MB. Free memory is still 148.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 16:24:21,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.07ms. Allocated memory is still 191.9MB. Free memory was 146.9MB in the beginning and 131.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-24 16:24:21,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.87ms. Allocated memory is still 191.9MB. Free memory was 131.8MB in the beginning and 128.4MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 16:24:21,736 INFO L158 Benchmark]: Boogie Preprocessor took 72.65ms. Allocated memory is still 191.9MB. Free memory was 128.4MB in the beginning and 122.8MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-24 16:24:21,736 INFO L158 Benchmark]: RCFGBuilder took 704.81ms. Allocated memory is still 191.9MB. Free memory was 122.5MB in the beginning and 134.8MB in the end (delta: -12.4MB). Peak memory consumption was 24.5MB. Max. memory is 8.0GB. [2023-12-24 16:24:21,737 INFO L158 Benchmark]: TraceAbstraction took 862966.55ms. Allocated memory was 191.9MB in the beginning and 950.0MB in the end (delta: 758.1MB). Free memory was 134.3MB in the beginning and 886.8MB in the end (delta: -752.4MB). Peak memory consumption was 6.2MB. Max. memory is 8.0GB. [2023-12-24 16:24:21,737 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 191.9MB. Free memory is still 148.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 210.07ms. Allocated memory is still 191.9MB. Free memory was 146.9MB in the beginning and 131.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.87ms. Allocated memory is still 191.9MB. Free memory was 131.8MB in the beginning and 128.4MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 72.65ms. Allocated memory is still 191.9MB. Free memory was 128.4MB in the beginning and 122.8MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 704.81ms. Allocated memory is still 191.9MB. Free memory was 122.5MB in the beginning and 134.8MB in the end (delta: -12.4MB). Peak memory consumption was 24.5MB. Max. memory is 8.0GB. * TraceAbstraction took 862966.55ms. Allocated memory was 191.9MB in the beginning and 950.0MB in the end (delta: 758.1MB). Free memory was 134.3MB in the beginning and 886.8MB in the end (delta: -752.4MB). Peak memory consumption was 6.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-13-45-3-14-3-18-8-15-8-24-8-24-7-24-7-24-6-24-2-21-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ∧-27-45-14-14-17-18-15-15-24-24-24-24-24-24-21-24-6-24-2-21-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-12-24 16:24:21,755 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