/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-64.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:53:40,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:53:40,566 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 16:53:40,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:53:40,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:53:40,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:53:40,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:53:40,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:53:40,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:53:40,595 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:53:40,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:53:40,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:53:40,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:53:40,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:53:40,597 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:53:40,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:53:40,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:53:40,597 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:53:40,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:53:40,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:53:40,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:53:40,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:53:40,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:53:40,598 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:53:40,598 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:53:40,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:53:40,599 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:53:40,599 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:53:40,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:53:40,599 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:53:40,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:53:40,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:53:40,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:53:40,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:53:40,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:53:40,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:53:40,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:53:40,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:53:40,600 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:53:40,601 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:53:40,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:53:40,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:53:40,601 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:53:40,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:53:40,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:53:40,601 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:53:40,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:53:40,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:53:40,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:53:40,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:53:40,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:53:40,787 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:53:40,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-64.i [2023-12-24 16:53:41,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:53:41,940 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:53:41,940 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-64.i [2023-12-24 16:53:41,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07298127f/c67ce9c4bfda46a59a63e5b48afcf581/FLAG99992e862 [2023-12-24 16:53:41,955 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07298127f/c67ce9c4bfda46a59a63e5b48afcf581 [2023-12-24 16:53:41,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:53:41,958 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:53:41,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:53:41,960 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:53:41,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:53:41,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:53:41" (1/1) ... [2023-12-24 16:53:41,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3140526c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:41, skipping insertion in model container [2023-12-24 16:53:41,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:53:41" (1/1) ... [2023-12-24 16:53:41,990 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:53:42,120 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-64.i[916,929] [2023-12-24 16:53:42,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:53:42,161 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:53:42,168 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-64.i[916,929] [2023-12-24 16:53:42,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:53:42,202 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:53:42,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42 WrapperNode [2023-12-24 16:53:42,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:53:42,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:53:42,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:53:42,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:53:42,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,240 INFO L138 Inliner]: procedures = 39, calls = 177, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 541 [2023-12-24 16:53:42,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:53:42,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:53:42,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:53:42,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:53:42,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,253 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,273 INFO L175 MemorySlicer]: Split 131 memory accesses to 16 slices as follows [2, 15, 6, 10, 11, 8, 8, 8, 10, 7, 6, 8, 3, 12, 7, 10]. 11 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 18 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1]. [2023-12-24 16:53:42,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,312 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:53:42,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:53:42,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:53:42,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:53:42,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (1/1) ... [2023-12-24 16:53:42,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:53:42,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:53:42,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 16:53:42,377 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 16:53:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:53:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 16:53:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 16:53:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 16:53:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 16:53:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 16:53:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 16:53:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 16:53:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#8 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#9 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#10 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#11 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#12 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#13 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#14 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#15 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 16:53:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#8 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#9 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#10 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#11 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#12 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#13 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#14 [2023-12-24 16:53:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#15 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 16:53:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#12 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#13 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#14 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#15 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 16:53:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#12 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#13 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#14 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#15 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:53:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#13 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#14 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#15 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 16:53:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 16:53:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 16:53:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 16:53:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 16:53:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 16:53:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 16:53:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-24 16:53:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-24 16:53:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-24 16:53:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2023-12-24 16:53:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#12 [2023-12-24 16:53:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#13 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#14 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#15 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2023-12-24 16:53:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2023-12-24 16:53:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2023-12-24 16:53:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#11 [2023-12-24 16:53:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#12 [2023-12-24 16:53:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#13 [2023-12-24 16:53:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#14 [2023-12-24 16:53:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#15 [2023-12-24 16:53:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 16:53:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 16:53:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 16:53:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 16:53:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#8 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#9 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#10 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#11 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#12 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#13 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#14 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#15 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 16:53:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#12 [2023-12-24 16:53:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#13 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#14 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#15 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 16:53:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#12 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#13 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#14 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#15 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 16:53:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 16:53:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-24 16:53:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2023-12-24 16:53:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2023-12-24 16:53:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2023-12-24 16:53:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#11 [2023-12-24 16:53:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#12 [2023-12-24 16:53:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#13 [2023-12-24 16:53:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#14 [2023-12-24 16:53:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#15 [2023-12-24 16:53:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 16:53:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 16:53:42,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#11 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#12 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#13 [2023-12-24 16:53:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#14 [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#15 [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:53:42,417 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:53:42,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:53:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#12 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#13 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#14 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#15 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 16:53:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#12 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#13 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#14 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#15 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 16:53:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 16:53:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 16:53:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 16:53:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 16:53:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-24 16:53:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-24 16:53:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-24 16:53:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2023-12-24 16:53:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#12 [2023-12-24 16:53:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#13 [2023-12-24 16:53:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#14 [2023-12-24 16:53:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#15 [2023-12-24 16:53:42,640 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:53:42,641 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:53:45,150 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:53:45,181 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:53:45,181 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:53:45,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:53:45 BoogieIcfgContainer [2023-12-24 16:53:45,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:53:45,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:53:45,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:53:45,185 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:53:45,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:53:41" (1/3) ... [2023-12-24 16:53:45,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79473e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:53:45, skipping insertion in model container [2023-12-24 16:53:45,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:53:42" (2/3) ... [2023-12-24 16:53:45,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79473e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:53:45, skipping insertion in model container [2023-12-24 16:53:45,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:53:45" (3/3) ... [2023-12-24 16:53:45,187 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-64.i [2023-12-24 16:53:45,198 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:53:45,198 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:53:45,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:53:45,232 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;@66a6d7d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:53:45,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:53:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 91 states have (on average 1.4615384615384615) internal successors, (133), 92 states have internal predecessors, (133), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:53:45,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 16:53:45,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:53:45,247 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:45,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:53:45,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:53:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1349204830, now seen corresponding path program 1 times [2023-12-24 16:53:45,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:53:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84363381] [2023-12-24 16:53:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:45,264 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 16:53:45,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:53:45,268 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 16:53:45,280 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 16:53:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:45,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:53:45,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2023-12-24 16:53:45,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:53:45,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:53:45,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84363381] [2023-12-24 16:53:45,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84363381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:53:45,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:53:45,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:53:45,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075684581] [2023-12-24 16:53:45,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:53:45,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:53:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:53:45,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:53:45,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:53:45,819 INFO L87 Difference]: Start difference. First operand has 114 states, 91 states have (on average 1.4615384615384615) internal successors, (133), 92 states have internal predecessors, (133), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 16:53:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:53:45,873 INFO L93 Difference]: Finished difference Result 225 states and 364 transitions. [2023-12-24 16:53:45,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:53:45,875 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 152 [2023-12-24 16:53:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:53:45,880 INFO L225 Difference]: With dead ends: 225 [2023-12-24 16:53:45,880 INFO L226 Difference]: Without dead ends: 112 [2023-12-24 16:53:45,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 151 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 16:53:45,884 INFO L413 NwaCegarLoop]: 164 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, 164 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 16:53:45,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:53:45,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-24 16:53:45,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-12-24 16:53:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 90 states have internal predecessors, (128), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:53:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 168 transitions. [2023-12-24 16:53:45,913 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 168 transitions. Word has length 152 [2023-12-24 16:53:45,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:53:45,913 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 168 transitions. [2023-12-24 16:53:45,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 16:53:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 168 transitions. [2023-12-24 16:53:45,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 16:53:45,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:53:45,916 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:45,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 16:53:46,125 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 16:53:46,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:53:46,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:53:46,126 INFO L85 PathProgramCache]: Analyzing trace with hash -792130114, now seen corresponding path program 1 times [2023-12-24 16:53:46,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:53:46,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393626661] [2023-12-24 16:53:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:46,128 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 16:53:46,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:53:46,129 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 16:53:46,134 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 16:53:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:46,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:53:46,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-12-24 16:53:46,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:53:46,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:53:46,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393626661] [2023-12-24 16:53:46,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393626661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:53:46,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:53:46,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:53:46,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435942170] [2023-12-24 16:53:46,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:53:46,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:53:46,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:53:46,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:53:46,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:53:46,556 INFO L87 Difference]: Start difference. First operand 112 states and 168 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 16:53:46,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:53:46,636 INFO L93 Difference]: Finished difference Result 229 states and 344 transitions. [2023-12-24 16:53:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:53:46,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 152 [2023-12-24 16:53:46,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:53:46,637 INFO L225 Difference]: With dead ends: 229 [2023-12-24 16:53:46,638 INFO L226 Difference]: Without dead ends: 118 [2023-12-24 16:53:46,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 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 16:53:46,639 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 10 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:53:46,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 481 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:53:46,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-24 16:53:46,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2023-12-24 16:53:46,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:53:46,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 170 transitions. [2023-12-24 16:53:46,650 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 170 transitions. Word has length 152 [2023-12-24 16:53:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:53:46,650 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 170 transitions. [2023-12-24 16:53:46,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 16:53:46,651 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 170 transitions. [2023-12-24 16:53:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 16:53:46,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:53:46,652 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:46,668 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 16:53:46,872 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 16:53:46,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:53:46,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:53:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1823171012, now seen corresponding path program 1 times [2023-12-24 16:53:46,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:53:46,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855442812] [2023-12-24 16:53:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:46,876 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 16:53:46,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:53:46,877 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 16:53:46,880 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 16:53:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:47,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:53:47,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:53:47,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:53:47,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:53:47,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855442812] [2023-12-24 16:53:47,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855442812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:53:47,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:53:47,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:53:47,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536256617] [2023-12-24 16:53:47,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:53:47,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:53:47,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:53:47,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:53:47,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:53:47,265 INFO L87 Difference]: Start difference. First operand 114 states and 170 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:53:48,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:53:48,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:53:48,498 INFO L93 Difference]: Finished difference Result 247 states and 369 transitions. [2023-12-24 16:53:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:53:48,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2023-12-24 16:53:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:53:48,500 INFO L225 Difference]: With dead ends: 247 [2023-12-24 16:53:48,500 INFO L226 Difference]: Without dead ends: 134 [2023-12-24 16:53:48,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 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 16:53:48,502 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 39 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:53:48,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 475 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 16:53:48,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-24 16:53:48,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 116. [2023-12-24 16:53:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 94 states have internal predecessors, (132), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:53:48,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2023-12-24 16:53:48,508 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 152 [2023-12-24 16:53:48,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:53:48,509 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2023-12-24 16:53:48,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:53:48,509 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2023-12-24 16:53:48,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 16:53:48,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:53:48,511 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:48,523 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 (4)] Ended with exit code 0 [2023-12-24 16:53:48,711 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 16:53:48,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:53:48,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:53:48,712 INFO L85 PathProgramCache]: Analyzing trace with hash -786154934, now seen corresponding path program 1 times [2023-12-24 16:53:48,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:53:48,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118657573] [2023-12-24 16:53:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:48,713 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 16:53:48,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:53:48,714 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 16:53:48,718 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 16:53:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:49,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:53:49,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:53:49,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:53:49,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:53:49,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118657573] [2023-12-24 16:53:49,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118657573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:53:49,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:53:49,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:53:49,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650251162] [2023-12-24 16:53:49,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:53:49,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:53:49,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:53:49,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:53:49,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:53:49,134 INFO L87 Difference]: Start difference. First operand 116 states and 172 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:53:49,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:53:49,233 INFO L93 Difference]: Finished difference Result 246 states and 365 transitions. [2023-12-24 16:53:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:53:49,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2023-12-24 16:53:49,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:53:49,235 INFO L225 Difference]: With dead ends: 246 [2023-12-24 16:53:49,235 INFO L226 Difference]: Without dead ends: 131 [2023-12-24 16:53:49,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:53:49,236 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 59 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:53:49,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 641 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:53:49,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-24 16:53:49,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 119. [2023-12-24 16:53:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 97 states have (on average 1.3917525773195876) internal successors, (135), 97 states have internal predecessors, (135), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:53:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 175 transitions. [2023-12-24 16:53:49,242 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 175 transitions. Word has length 154 [2023-12-24 16:53:49,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:53:49,242 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 175 transitions. [2023-12-24 16:53:49,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:53:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 175 transitions. [2023-12-24 16:53:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 16:53:49,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:53:49,244 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:49,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 16:53:49,450 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 16:53:49,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:53:49,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:53:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash 219641794, now seen corresponding path program 1 times [2023-12-24 16:53:49,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:53:49,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654601649] [2023-12-24 16:53:49,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:49,451 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 16:53:49,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:53:49,452 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 16:53:49,453 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 16:53:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:49,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:53:49,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:49,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:53:50,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:53:50,953 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 17 proven. 195 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-24 16:53:50,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:53:51,533 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:53:51,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 16:53:51,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:53:51,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654601649] [2023-12-24 16:53:51,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654601649] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:53:51,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [458192475] [2023-12-24 16:53:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:51,633 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:53:51,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:53:51,665 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:53:51,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 16:53:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:53,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:53:53,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:53,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:53:53,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:53:55,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:53:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 17 proven. 195 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-24 16:53:55,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:53:55,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:53:55,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [458192475] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:53:55,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:53:55,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 16:53:55,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212065221] [2023-12-24 16:53:55,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:53:55,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 16:53:55,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:53:55,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 16:53:55,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:53:55,688 INFO L87 Difference]: Start difference. First operand 119 states and 175 transitions. Second operand has 17 states, 15 states have (on average 7.133333333333334) internal successors, (107), 14 states have internal predecessors, (107), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 16:53:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:53:57,366 INFO L93 Difference]: Finished difference Result 362 states and 529 transitions. [2023-12-24 16:53:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:53:57,366 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 7.133333333333334) internal successors, (107), 14 states have internal predecessors, (107), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) Word has length 155 [2023-12-24 16:53:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:53:57,368 INFO L225 Difference]: With dead ends: 362 [2023-12-24 16:53:57,368 INFO L226 Difference]: Without dead ends: 244 [2023-12-24 16:53:57,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 572 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 16:53:57,369 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 509 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:53:57,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1310 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 16:53:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-24 16:53:57,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 191. [2023-12-24 16:53:57,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 147 states have (on average 1.3401360544217686) internal successors, (197), 147 states have internal predecessors, (197), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 16:53:57,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 277 transitions. [2023-12-24 16:53:57,383 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 277 transitions. Word has length 155 [2023-12-24 16:53:57,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:53:57,384 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 277 transitions. [2023-12-24 16:53:57,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 7.133333333333334) internal successors, (107), 14 states have internal predecessors, (107), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 16:53:57,384 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 277 transitions. [2023-12-24 16:53:57,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 16:53:57,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:53:57,385 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:57,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-24 16:53:57,611 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 16:53:57,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:53:57,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:53:57,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:53:57,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1624545052, now seen corresponding path program 1 times [2023-12-24 16:53:57,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:53:57,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773307790] [2023-12-24 16:53:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:53:57,800 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 16:53:57,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:53:57,801 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 16:53:57,802 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 16:53:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:53:58,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:53:58,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:53:58,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:53:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 13 proven. 375 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-24 16:53:59,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:54:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:54:04,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:54:04,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773307790] [2023-12-24 16:54:04,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773307790] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:54:04,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:54:04,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 16:54:04,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194006930] [2023-12-24 16:54:04,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:54:04,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:54:04,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:54:04,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:54:04,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:54:04,769 INFO L87 Difference]: Start difference. First operand 191 states and 277 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:54:14,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:54:14,206 INFO L93 Difference]: Finished difference Result 419 states and 608 transitions. [2023-12-24 16:54:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:54:14,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-24 16:54:14,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:54:14,211 INFO L225 Difference]: With dead ends: 419 [2023-12-24 16:54:14,211 INFO L226 Difference]: Without dead ends: 301 [2023-12-24 16:54:14,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:54:14,212 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 230 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:54:14,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 540 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-24 16:54:14,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-24 16:54:14,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 250. [2023-12-24 16:54:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 201 states have (on average 1.36318407960199) internal successors, (274), 202 states have internal predecessors, (274), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:54:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 362 transitions. [2023-12-24 16:54:14,227 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 362 transitions. Word has length 157 [2023-12-24 16:54:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:54:14,227 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 362 transitions. [2023-12-24 16:54:14,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:54:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 362 transitions. [2023-12-24 16:54:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 16:54:14,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:54:14,228 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:14,244 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 16:54:14,429 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 16:54:14,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:54:14,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:54:14,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1366379614, now seen corresponding path program 1 times [2023-12-24 16:54:14,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:54:14,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818263672] [2023-12-24 16:54:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:14,430 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 16:54:14,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:54:14,431 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 16:54:14,462 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 16:54:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:14,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:54:14,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:15,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:54:15,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-24 16:54:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 13 proven. 375 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-24 16:54:15,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:54:30,112 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:54:30,113 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 20 treesize of output 19 [2023-12-24 16:54:31,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:54:31,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818263672] [2023-12-24 16:54:31,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818263672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:54:31,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1509342277] [2023-12-24 16:54:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:54:31,918 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:54:31,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:54:31,919 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:54:31,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 16:54:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:54:33,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:54:33,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:54:33,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:54:34,721 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 16:54:38,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-24 16:54:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 13 proven. 375 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-24 16:54:39,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:54:54,726 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 38 treesize of output 34 [2023-12-24 16:54:56,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1509342277] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:54:56,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:54:56,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-24 16:54:56,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960697649] [2023-12-24 16:54:56,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:54:56,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 16:54:56,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:54:56,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 16:54:56,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:54:56,641 INFO L87 Difference]: Start difference. First operand 250 states and 362 transitions. Second operand has 18 states, 16 states have (on average 7.5625) internal successors, (121), 15 states have internal predecessors, (121), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 16:55:03,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:55:03,262 INFO L93 Difference]: Finished difference Result 507 states and 733 transitions. [2023-12-24 16:55:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:55:03,263 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 7.5625) internal successors, (121), 15 states have internal predecessors, (121), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) Word has length 157 [2023-12-24 16:55:03,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:55:03,265 INFO L225 Difference]: With dead ends: 507 [2023-12-24 16:55:03,265 INFO L226 Difference]: Without dead ends: 330 [2023-12-24 16:55:03,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 541 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=343, Invalid=1139, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 16:55:03,267 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 513 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:55:03,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1301 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 16:55:03,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-24 16:55:03,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 271. [2023-12-24 16:55:03,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 221 states have (on average 1.3755656108597285) internal successors, (304), 222 states have internal predecessors, (304), 44 states have call successors, (44), 5 states have call predecessors, (44), 5 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:55:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 392 transitions. [2023-12-24 16:55:03,281 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 392 transitions. Word has length 157 [2023-12-24 16:55:03,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:55:03,281 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 392 transitions. [2023-12-24 16:55:03,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 7.5625) internal successors, (121), 15 states have internal predecessors, (121), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 16:55:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 392 transitions. [2023-12-24 16:55:03,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 16:55:03,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:55:03,283 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:03,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 16:55:03,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-24 16:55:03,696 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=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:55:03,697 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:55:03,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:55:03,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1843399770, now seen corresponding path program 1 times [2023-12-24 16:55:03,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:55:03,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826122513] [2023-12-24 16:55:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:03,698 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 16:55:03,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:55:03,699 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 16:55:03,702 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 16:55:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:04,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:55:04,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:06,026 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 18 treesize of output 19 [2023-12-24 16:55:06,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:55:06,496 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 203 treesize of output 133 [2023-12-24 16:55:06,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:55:06,504 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 288 treesize of output 138 [2023-12-24 16:55:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2023-12-24 16:55:06,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:55:07,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:55:07,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826122513] [2023-12-24 16:55:07,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826122513] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:55:07,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1915458325] [2023-12-24 16:55:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:07,092 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:55:07,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:55:07,093 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:55:07,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 16:55:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:08,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 16:55:08,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:10,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 16:55:13,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 16:55:14,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:55:14,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 121 [2023-12-24 16:55:14,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 274 treesize of output 146 [2023-12-24 16:55:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2023-12-24 16:55:14,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:55:14,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1915458325] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:55:14,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:55:14,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-12-24 16:55:14,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924441579] [2023-12-24 16:55:14,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:55:14,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 16:55:14,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:55:14,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 16:55:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:55:14,457 INFO L87 Difference]: Start difference. First operand 271 states and 392 transitions. Second operand has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 16 states have internal predecessors, (116), 4 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-24 16:55:18,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:55:22,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:55:25,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:55:28,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:55:32,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:55:34,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:55:36,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:55:36,515 INFO L93 Difference]: Finished difference Result 1008 states and 1460 transitions. [2023-12-24 16:55:36,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 16:55:36,516 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 16 states have internal predecessors, (116), 4 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 157 [2023-12-24 16:55:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:55:36,519 INFO L225 Difference]: With dead ends: 1008 [2023-12-24 16:55:36,519 INFO L226 Difference]: Without dead ends: 831 [2023-12-24 16:55:36,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 16:55:36,520 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 705 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:55:36,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1882 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2023-12-24 16:55:36,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2023-12-24 16:55:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 645. [2023-12-24 16:55:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 542 states have (on average 1.3929889298892988) internal successors, (755), 547 states have internal predecessors, (755), 92 states have call successors, (92), 10 states have call predecessors, (92), 10 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 16:55:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 939 transitions. [2023-12-24 16:55:36,558 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 939 transitions. Word has length 157 [2023-12-24 16:55:36,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:55:36,559 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 939 transitions. [2023-12-24 16:55:36,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 16 states have internal predecessors, (116), 4 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-24 16:55:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 939 transitions. [2023-12-24 16:55:36,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 16:55:36,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:55:36,560 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:36,576 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 16:55:36,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 16:55:36,976 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=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:55:36,977 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:55:36,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:55:36,977 INFO L85 PathProgramCache]: Analyzing trace with hash -115175016, now seen corresponding path program 1 times [2023-12-24 16:55:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:55:36,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936180359] [2023-12-24 16:55:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:36,978 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 16:55:36,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:55:36,980 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 16:55:36,986 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 16:55:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:37,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:55:37,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2023-12-24 16:55:37,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:55:37,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:55:37,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936180359] [2023-12-24 16:55:37,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936180359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:55:37,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:55:37,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:55:37,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945894013] [2023-12-24 16:55:37,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:55:37,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:55:37,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:55:37,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:55:37,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:55:37,430 INFO L87 Difference]: Start difference. First operand 645 states and 939 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 16:55:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:55:37,581 INFO L93 Difference]: Finished difference Result 1188 states and 1732 transitions. [2023-12-24 16:55:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:55:37,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 157 [2023-12-24 16:55:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:55:37,585 INFO L225 Difference]: With dead ends: 1188 [2023-12-24 16:55:37,585 INFO L226 Difference]: Without dead ends: 653 [2023-12-24 16:55:37,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 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 16:55:37,586 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 7 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:55:37,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 489 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:55:37,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-12-24 16:55:37,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 645. [2023-12-24 16:55:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 542 states have (on average 1.3892988929889298) internal successors, (753), 547 states have internal predecessors, (753), 92 states have call successors, (92), 10 states have call predecessors, (92), 10 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 16:55:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 937 transitions. [2023-12-24 16:55:37,624 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 937 transitions. Word has length 157 [2023-12-24 16:55:37,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:55:37,625 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 937 transitions. [2023-12-24 16:55:37,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 16:55:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 937 transitions. [2023-12-24 16:55:37,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:55:37,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:55:37,627 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:37,642 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 16:55:37,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:55:37,843 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:55:37,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:55:37,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2056919654, now seen corresponding path program 1 times [2023-12-24 16:55:37,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:55:37,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940250794] [2023-12-24 16:55:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:37,844 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 16:55:37,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:55:37,845 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:55:37,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 16:55:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:38,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:55:38,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:55:38,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:55:38,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:55:38,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940250794] [2023-12-24 16:55:38,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940250794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:55:38,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:55:38,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:55:38,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931573492] [2023-12-24 16:55:38,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:55:38,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:55:38,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:55:38,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:55:38,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:55:38,287 INFO L87 Difference]: Start difference. First operand 645 states and 937 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:55:38,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:55:38,406 INFO L93 Difference]: Finished difference Result 1186 states and 1722 transitions. [2023-12-24 16:55:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:55:38,407 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-24 16:55:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:55:38,410 INFO L225 Difference]: With dead ends: 1186 [2023-12-24 16:55:38,410 INFO L226 Difference]: Without dead ends: 693 [2023-12-24 16:55:38,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:55:38,411 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 35 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:55:38,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 625 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:55:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-24 16:55:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 663. [2023-12-24 16:55:38,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 560 states have (on average 1.3767857142857143) internal successors, (771), 565 states have internal predecessors, (771), 92 states have call successors, (92), 10 states have call predecessors, (92), 10 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 16:55:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 955 transitions. [2023-12-24 16:55:38,444 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 955 transitions. Word has length 158 [2023-12-24 16:55:38,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:55:38,444 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 955 transitions. [2023-12-24 16:55:38,444 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:55:38,444 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 955 transitions. [2023-12-24 16:55:38,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:55:38,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:55:38,446 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:38,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 16:55:38,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:55:38,657 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:55:38,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:55:38,658 INFO L85 PathProgramCache]: Analyzing trace with hash -813733011, now seen corresponding path program 1 times [2023-12-24 16:55:38,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:55:38,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728709868] [2023-12-24 16:55:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:38,659 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 16:55:38,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:55:38,660 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 16:55:38,695 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 16:55:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:39,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:55:39,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:40,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:55:40,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 26 [2023-12-24 16:55:40,753 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 44 proven. 351 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-12-24 16:55:40,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:55:42,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:55:42,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2023-12-24 16:55:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 81 proven. 30 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2023-12-24 16:55:42,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:55:42,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728709868] [2023-12-24 16:55:42,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728709868] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:55:42,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:55:42,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2023-12-24 16:55:42,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876944796] [2023-12-24 16:55:42,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:55:42,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 16:55:42,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:55:42,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 16:55:42,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:55:42,748 INFO L87 Difference]: Start difference. First operand 663 states and 955 transitions. Second operand has 29 states, 25 states have (on average 5.2) internal successors, (130), 26 states have internal predecessors, (130), 8 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 6 states have call predecessors, (40), 8 states have call successors, (40) [2023-12-24 16:55:46,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:55:46,415 INFO L93 Difference]: Finished difference Result 2175 states and 3085 transitions. [2023-12-24 16:55:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 16:55:46,416 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 5.2) internal successors, (130), 26 states have internal predecessors, (130), 8 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 6 states have call predecessors, (40), 8 states have call successors, (40) Word has length 158 [2023-12-24 16:55:46,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:55:46,421 INFO L225 Difference]: With dead ends: 2175 [2023-12-24 16:55:46,421 INFO L226 Difference]: Without dead ends: 1664 [2023-12-24 16:55:46,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=553, Invalid=1997, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 16:55:46,424 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 563 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:55:46,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 3219 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 16:55:46,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2023-12-24 16:55:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1228. [2023-12-24 16:55:46,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1049 states have (on average 1.3755958055290753) internal successors, (1443), 1059 states have internal predecessors, (1443), 154 states have call successors, (154), 24 states have call predecessors, (154), 24 states have return successors, (154), 144 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-24 16:55:46,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1751 transitions. [2023-12-24 16:55:46,492 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1751 transitions. Word has length 158 [2023-12-24 16:55:46,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:55:46,492 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 1751 transitions. [2023-12-24 16:55:46,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 5.2) internal successors, (130), 26 states have internal predecessors, (130), 8 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 6 states have call predecessors, (40), 8 states have call successors, (40) [2023-12-24 16:55:46,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1751 transitions. [2023-12-24 16:55:46,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:55:46,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:55:46,494 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:46,507 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 16:55:46,707 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 16:55:46,708 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:55:46,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:55:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1206760021, now seen corresponding path program 1 times [2023-12-24 16:55:46,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:55:46,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699810147] [2023-12-24 16:55:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:46,709 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 16:55:46,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:55:46,710 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 16:55:46,725 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 16:55:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:47,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:55:47,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:48,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 26 [2023-12-24 16:55:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 40 proven. 405 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-24 16:55:48,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:55:48,504 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:55:48,505 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 30 treesize of output 25 [2023-12-24 16:55:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 69 proven. 42 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2023-12-24 16:55:48,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:55:48,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699810147] [2023-12-24 16:55:48,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699810147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:55:48,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:55:48,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2023-12-24 16:55:48,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636873313] [2023-12-24 16:55:48,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:55:48,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 16:55:48,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:55:48,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 16:55:48,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:55:48,720 INFO L87 Difference]: Start difference. First operand 1228 states and 1751 transitions. Second operand has 20 states, 16 states have (on average 6.4375) internal successors, (103), 18 states have internal predecessors, (103), 7 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 5 states have call predecessors, (40), 7 states have call successors, (40) [2023-12-24 16:55:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:55:49,949 INFO L93 Difference]: Finished difference Result 2326 states and 3280 transitions. [2023-12-24 16:55:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 16:55:49,950 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 6.4375) internal successors, (103), 18 states have internal predecessors, (103), 7 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 5 states have call predecessors, (40), 7 states have call successors, (40) Word has length 158 [2023-12-24 16:55:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:55:49,954 INFO L225 Difference]: With dead ends: 2326 [2023-12-24 16:55:49,954 INFO L226 Difference]: Without dead ends: 1296 [2023-12-24 16:55:49,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:55:49,956 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 332 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:55:49,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1424 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:55:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2023-12-24 16:55:50,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1264. [2023-12-24 16:55:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1073 states have (on average 1.3560111835973905) internal successors, (1455), 1083 states have internal predecessors, (1455), 154 states have call successors, (154), 36 states have call predecessors, (154), 36 states have return successors, (154), 144 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-24 16:55:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1763 transitions. [2023-12-24 16:55:50,051 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1763 transitions. Word has length 158 [2023-12-24 16:55:50,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:55:50,051 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 1763 transitions. [2023-12-24 16:55:50,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 6.4375) internal successors, (103), 18 states have internal predecessors, (103), 7 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 5 states have call predecessors, (40), 7 states have call successors, (40) [2023-12-24 16:55:50,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1763 transitions. [2023-12-24 16:55:50,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:55:50,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:55:50,054 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:50,067 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 (16)] Ended with exit code 0 [2023-12-24 16:55:50,265 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 16:55:50,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:55:50,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:55:50,265 INFO L85 PathProgramCache]: Analyzing trace with hash -817878248, now seen corresponding path program 1 times [2023-12-24 16:55:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:55:50,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992040714] [2023-12-24 16:55:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:50,266 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 16:55:50,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:55:50,267 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 16:55:50,267 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 16:55:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:50,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:55:50,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:51,089 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 15 treesize of output 7 [2023-12-24 16:55:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 17 proven. 195 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-24 16:55:51,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:55:51,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:55:51,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992040714] [2023-12-24 16:55:51,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992040714] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:55:51,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2145310816] [2023-12-24 16:55:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:51,251 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:55:51,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:55:51,252 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 16:55:51,254 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 16:55:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:51,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:55:51,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:51,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-24 16:55:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:55:51,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:55:51,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2145310816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:55:51,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:55:51,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-24 16:55:51,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164653729] [2023-12-24 16:55:51,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:55:51,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:55:51,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:55:51,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:55:51,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:55:51,970 INFO L87 Difference]: Start difference. First operand 1264 states and 1763 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:55:53,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:55:53,423 INFO L93 Difference]: Finished difference Result 2967 states and 4150 transitions. [2023-12-24 16:55:53,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:55:53,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-24 16:55:53,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:55:53,438 INFO L225 Difference]: With dead ends: 2967 [2023-12-24 16:55:53,439 INFO L226 Difference]: Without dead ends: 1917 [2023-12-24 16:55:53,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:55:53,444 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 195 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:55:53,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1226 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 16:55:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2023-12-24 16:55:53,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1396. [2023-12-24 16:55:53,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1205 states have (on average 1.3825726141078838) internal successors, (1666), 1215 states have internal predecessors, (1666), 154 states have call successors, (154), 36 states have call predecessors, (154), 36 states have return successors, (154), 144 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-24 16:55:53,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1974 transitions. [2023-12-24 16:55:53,521 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1974 transitions. Word has length 158 [2023-12-24 16:55:53,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:55:53,521 INFO L495 AbstractCegarLoop]: Abstraction has 1396 states and 1974 transitions. [2023-12-24 16:55:53,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:55:53,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1974 transitions. [2023-12-24 16:55:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 16:55:53,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:55:53,523 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:53,538 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 16:55:53,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-24 16:55:53,936 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 16:55:53,936 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:55:53,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:55:53,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1627151925, now seen corresponding path program 1 times [2023-12-24 16:55:53,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:55:53,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804667040] [2023-12-24 16:55:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:53,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:55:53,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:55:53,939 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 16:55:53,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 16:55:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:54,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:55:54,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:54,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:55:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 17 proven. 195 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-24 16:55:54,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:55:55,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:55:55,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804667040] [2023-12-24 16:55:55,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804667040] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:55:55,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [65733868] [2023-12-24 16:55:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:55,088 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:55:55,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:55:55,089 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:55:55,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-24 16:55:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:55,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:55:55,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:55:55,712 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 17 treesize of output 9 [2023-12-24 16:55:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:55:55,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:55:55,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [65733868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:55:55,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:55:55,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-24 16:55:55,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826720508] [2023-12-24 16:55:55,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:55:55,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:55:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:55:55,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:55:55,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:55:55,793 INFO L87 Difference]: Start difference. First operand 1396 states and 1974 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:55:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:55:57,428 INFO L93 Difference]: Finished difference Result 2900 states and 4083 transitions. [2023-12-24 16:55:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:55:57,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 16:55:57,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:55:57,434 INFO L225 Difference]: With dead ends: 2900 [2023-12-24 16:55:57,434 INFO L226 Difference]: Without dead ends: 1766 [2023-12-24 16:55:57,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:55:57,436 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 198 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:55:57,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 841 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 16:55:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2023-12-24 16:55:57,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1426. [2023-12-24 16:55:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1235 states have (on average 1.3870445344129554) internal successors, (1713), 1245 states have internal predecessors, (1713), 154 states have call successors, (154), 36 states have call predecessors, (154), 36 states have return successors, (154), 144 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-24 16:55:57,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2021 transitions. [2023-12-24 16:55:57,517 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2021 transitions. Word has length 159 [2023-12-24 16:55:57,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:55:57,518 INFO L495 AbstractCegarLoop]: Abstraction has 1426 states and 2021 transitions. [2023-12-24 16:55:57,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:55:57,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2021 transitions. [2023-12-24 16:55:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 16:55:57,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:55:57,519 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:57,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-24 16:55:57,759 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 16:55:57,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:55:57,945 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:55:57,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:55:57,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1023330708, now seen corresponding path program 1 times [2023-12-24 16:55:57,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:55:57,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147376634] [2023-12-24 16:55:57,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:55:57,946 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 16:55:57,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:55:57,947 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 16:55:57,953 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 16:55:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:55:58,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:55:58,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:56:00,716 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 18 treesize of output 19 [2023-12-24 16:56:01,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:56:01,156 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 203 treesize of output 133 [2023-12-24 16:56:01,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:56:01,163 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 286 treesize of output 136 [2023-12-24 16:56:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 427 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:56:01,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:56:01,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:56:01,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147376634] [2023-12-24 16:56:01,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147376634] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:56:01,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2102858331] [2023-12-24 16:56:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:56:01,749 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:56:01,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:56:01,750 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:56:01,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-24 16:56:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:56:03,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 16:56:03,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:56:05,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 8 [2023-12-24 16:56:13,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 16:56:14,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:56:14,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 121 [2023-12-24 16:56:14,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 140 [2023-12-24 16:56:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 427 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:56:14,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:56:14,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2102858331] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:56:14,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:56:14,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2023-12-24 16:56:14,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441113664] [2023-12-24 16:56:14,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:56:14,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 16:56:14,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:56:14,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 16:56:14,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=647, Unknown=1, NotChecked=0, Total=756 [2023-12-24 16:56:14,941 INFO L87 Difference]: Start difference. First operand 1426 states and 2021 transitions. Second operand has 24 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 21 states have internal predecessors, (126), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 16:56:22,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:56:25,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:56:29,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:56:31,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:56:37,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:56:40,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:56:44,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:56:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:56:44,775 INFO L93 Difference]: Finished difference Result 4029 states and 5647 transitions. [2023-12-24 16:56:44,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 16:56:44,777 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 21 states have internal predecessors, (126), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) Word has length 159 [2023-12-24 16:56:44,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:56:44,785 INFO L225 Difference]: With dead ends: 4029 [2023-12-24 16:56:44,785 INFO L226 Difference]: Without dead ends: 2865 [2023-12-24 16:56:44,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 338 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=539, Invalid=2322, Unknown=1, NotChecked=0, Total=2862 [2023-12-24 16:56:44,789 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1754 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:56:44,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 2166 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 26.6s Time] [2023-12-24 16:56:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2023-12-24 16:56:44,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1905. [2023-12-24 16:56:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1638 states have (on average 1.379120879120879) internal successors, (2259), 1652 states have internal predecessors, (2259), 212 states have call successors, (212), 54 states have call predecessors, (212), 54 states have return successors, (212), 198 states have call predecessors, (212), 212 states have call successors, (212) [2023-12-24 16:56:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2683 transitions. [2023-12-24 16:56:44,919 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2683 transitions. Word has length 159 [2023-12-24 16:56:44,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:56:44,920 INFO L495 AbstractCegarLoop]: Abstraction has 1905 states and 2683 transitions. [2023-12-24 16:56:44,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 21 states have internal predecessors, (126), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 16:56:44,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2683 transitions. [2023-12-24 16:56:44,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 16:56:44,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:56:44,922 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:44,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-12-24 16:56:45,150 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 (21)] Forceful destruction successful, exit code 0 [2023-12-24 16:56:45,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:56:45,339 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:56:45,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:56:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1395153770, now seen corresponding path program 1 times [2023-12-24 16:56:45,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:56:45,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837332025] [2023-12-24 16:56:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:56:45,340 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 16:56:45,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:56:45,341 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 16:56:45,341 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 16:56:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:56:45,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:56:45,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:56:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 426 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2023-12-24 16:56:45,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:56:45,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:56:45,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837332025] [2023-12-24 16:56:45,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837332025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:56:45,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:56:45,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:56:45,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173346403] [2023-12-24 16:56:45,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:56:45,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:56:45,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:56:45,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:56:45,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:56:45,820 INFO L87 Difference]: Start difference. First operand 1905 states and 2683 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-24 16:56:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:56:46,257 INFO L93 Difference]: Finished difference Result 3097 states and 4346 transitions. [2023-12-24 16:56:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:56:46,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 159 [2023-12-24 16:56:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:56:46,261 INFO L225 Difference]: With dead ends: 3097 [2023-12-24 16:56:46,261 INFO L226 Difference]: Without dead ends: 1418 [2023-12-24 16:56:46,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:56:46,264 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 7 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:56:46,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 654 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:56:46,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2023-12-24 16:56:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1386. [2023-12-24 16:56:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1192 states have (on average 1.3724832214765101) internal successors, (1636), 1202 states have internal predecessors, (1636), 154 states have call successors, (154), 39 states have call predecessors, (154), 39 states have return successors, (154), 144 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-24 16:56:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1944 transitions. [2023-12-24 16:56:46,355 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1944 transitions. Word has length 159 [2023-12-24 16:56:46,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:56:46,355 INFO L495 AbstractCegarLoop]: Abstraction has 1386 states and 1944 transitions. [2023-12-24 16:56:46,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-24 16:56:46,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1944 transitions. [2023-12-24 16:56:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 16:56:46,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:56:46,356 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:46,372 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 16:56:46,568 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 16:56:46,569 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:56:46,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:56:46,569 INFO L85 PathProgramCache]: Analyzing trace with hash 491915252, now seen corresponding path program 1 times [2023-12-24 16:56:46,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:56:46,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541729142] [2023-12-24 16:56:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:56:46,570 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 16:56:46,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:56:46,571 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 16:56:46,572 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 16:56:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:56:46,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:56:47,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:56:47,045 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 17 treesize of output 9 [2023-12-24 16:56:48,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:56:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 17 proven. 195 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-24 16:56:48,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:56:48,889 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:56:48,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 16:56:48,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:56:48,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541729142] [2023-12-24 16:56:48,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541729142] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:56:48,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1601451049] [2023-12-24 16:56:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:56:48,974 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:56:48,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:56:48,975 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:56:48,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-24 16:56:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:56:50,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:56:50,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:56:50,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:56:50,984 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 16:56:53,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:56:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 17 proven. 195 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-24 16:56:53,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:56:53,492 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 38 treesize of output 34 [2023-12-24 16:56:53,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1601451049] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:56:53,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:56:53,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 16:56:53,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101054366] [2023-12-24 16:56:53,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:56:53,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 16:56:53,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:56:53,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 16:56:53,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:56:53,584 INFO L87 Difference]: Start difference. First operand 1386 states and 1944 transitions. Second operand has 17 states, 15 states have (on average 8.133333333333333) internal successors, (122), 14 states have internal predecessors, (122), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 16:56:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:56:55,560 INFO L93 Difference]: Finished difference Result 2743 states and 3836 transitions. [2023-12-24 16:56:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:56:55,560 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.133333333333333) internal successors, (122), 14 states have internal predecessors, (122), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) Word has length 160 [2023-12-24 16:56:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:56:55,573 INFO L225 Difference]: With dead ends: 2743 [2023-12-24 16:56:55,574 INFO L226 Difference]: Without dead ends: 1599 [2023-12-24 16:56:55,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 592 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 16:56:55,576 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 531 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:56:55,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 1019 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 16:56:55,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2023-12-24 16:56:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1386. [2023-12-24 16:56:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1192 states have (on average 1.3657718120805369) internal successors, (1628), 1202 states have internal predecessors, (1628), 154 states have call successors, (154), 39 states have call predecessors, (154), 39 states have return successors, (154), 144 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-24 16:56:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1936 transitions. [2023-12-24 16:56:55,667 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1936 transitions. Word has length 160 [2023-12-24 16:56:55,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:56:55,667 INFO L495 AbstractCegarLoop]: Abstraction has 1386 states and 1936 transitions. [2023-12-24 16:56:55,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.133333333333333) internal successors, (122), 14 states have internal predecessors, (122), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 16:56:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1936 transitions. [2023-12-24 16:56:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 16:56:55,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:56:55,668 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:55,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 16:56:55,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-12-24 16:56:56,084 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=3,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:56:56,084 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:56:56,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:56:56,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1449956081, now seen corresponding path program 1 times [2023-12-24 16:56:56,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:56:56,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260659808] [2023-12-24 16:56:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:56:56,085 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 16:56:56,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:56:56,086 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 16:56:56,088 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 16:56:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:56:56,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:56:56,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:56:57,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:56:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 17 proven. 195 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-24 16:56:57,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:56:57,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:56:57,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260659808] [2023-12-24 16:56:57,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260659808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:56:57,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [274018050] [2023-12-24 16:56:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:56:57,319 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:56:57,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:56:57,320 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:56:57,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-12-24 16:56:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:56:58,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:56:58,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:56:58,870 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 16:57:00,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:57:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 17 proven. 195 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-24 16:57:00,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:57:00,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [274018050] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:57:00,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:57:00,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-24 16:57:00,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945075935] [2023-12-24 16:57:00,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:57:00,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 16:57:00,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:57:00,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 16:57:00,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:57:00,289 INFO L87 Difference]: Start difference. First operand 1386 states and 1936 transitions. Second operand has 15 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 16:57:02,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:57:03,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:57:03,044 INFO L93 Difference]: Finished difference Result 2510 states and 3463 transitions. [2023-12-24 16:57:03,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:57:03,055 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) Word has length 160 [2023-12-24 16:57:03,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:57:03,059 INFO L225 Difference]: With dead ends: 2510 [2023-12-24 16:57:03,059 INFO L226 Difference]: Without dead ends: 1292 [2023-12-24 16:57:03,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:57:03,061 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 550 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:57:03,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 930 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 16:57:03,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2023-12-24 16:57:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1234. [2023-12-24 16:57:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1040 states have (on average 1.3240384615384615) internal successors, (1377), 1051 states have internal predecessors, (1377), 146 states have call successors, (146), 47 states have call predecessors, (146), 47 states have return successors, (146), 135 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-24 16:57:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1669 transitions. [2023-12-24 16:57:03,162 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1669 transitions. Word has length 160 [2023-12-24 16:57:03,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:57:03,162 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 1669 transitions. [2023-12-24 16:57:03,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 16:57:03,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1669 transitions. [2023-12-24 16:57:03,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 16:57:03,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:57:03,163 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:03,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2023-12-24 16:57:03,390 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 16:57:03,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:57:03,586 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:57:03,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:57:03,586 INFO L85 PathProgramCache]: Analyzing trace with hash -162929878, now seen corresponding path program 1 times [2023-12-24 16:57:03,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:57:03,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315366926] [2023-12-24 16:57:03,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:03,587 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 16:57:03,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:57:03,589 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 16:57:03,612 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 16:57:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:04,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:57:04,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:57:05,008 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 16:57:05,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:57:05,127 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 42 treesize of output 30 [2023-12-24 16:57:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:57:05,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:57:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:57:05,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:57:05,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315366926] [2023-12-24 16:57:05,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315366926] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:57:05,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:57:05,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2023-12-24 16:57:05,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525742394] [2023-12-24 16:57:05,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:57:05,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:57:05,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:57:05,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:57:05,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:57:05,368 INFO L87 Difference]: Start difference. First operand 1234 states and 1669 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:57:05,675 INFO L93 Difference]: Finished difference Result 1288 states and 1730 transitions. [2023-12-24 16:57:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:57:05,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 163 [2023-12-24 16:57:05,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:57:05,680 INFO L225 Difference]: With dead ends: 1288 [2023-12-24 16:57:05,680 INFO L226 Difference]: Without dead ends: 1286 [2023-12-24 16:57:05,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:57:05,681 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 132 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:57:05,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1065 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:57:05,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2023-12-24 16:57:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1286. [2023-12-24 16:57:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1088 states have (on average 1.3097426470588236) internal successors, (1425), 1099 states have internal predecessors, (1425), 146 states have call successors, (146), 51 states have call predecessors, (146), 51 states have return successors, (146), 135 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-24 16:57:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1717 transitions. [2023-12-24 16:57:05,784 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1717 transitions. Word has length 163 [2023-12-24 16:57:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:57:05,785 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1717 transitions. [2023-12-24 16:57:05,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1717 transitions. [2023-12-24 16:57:05,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 16:57:05,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:57:05,786 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:05,802 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 16:57:06,000 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 16:57:06,000 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:57:06,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:57:06,001 INFO L85 PathProgramCache]: Analyzing trace with hash 11125150, now seen corresponding path program 1 times [2023-12-24 16:57:06,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:57:06,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186820954] [2023-12-24 16:57:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:06,002 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 16:57:06,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:57:06,003 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 16:57:06,048 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 16:57:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:06,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:57:06,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:57:07,780 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 16:57:07,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:57:08,058 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 42 treesize of output 26 [2023-12-24 16:57:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 44 proven. 351 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-12-24 16:57:08,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:57:08,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-24 16:57:08,666 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-24 16:57:08,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:57:08,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2023-12-24 16:57:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:57:08,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:57:08,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186820954] [2023-12-24 16:57:08,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186820954] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:57:08,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:57:08,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 24 [2023-12-24 16:57:08,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015740127] [2023-12-24 16:57:08,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:57:08,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:57:08,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:57:08,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:57:08,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2023-12-24 16:57:08,910 INFO L87 Difference]: Start difference. First operand 1286 states and 1717 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:10,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:57:10,331 INFO L93 Difference]: Finished difference Result 2830 states and 3788 transitions. [2023-12-24 16:57:10,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 16:57:10,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 163 [2023-12-24 16:57:10,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:57:10,343 INFO L225 Difference]: With dead ends: 2830 [2023-12-24 16:57:10,343 INFO L226 Difference]: Without dead ends: 2251 [2023-12-24 16:57:10,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 16:57:10,345 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 239 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:57:10,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1997 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:57:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2023-12-24 16:57:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 1639. [2023-12-24 16:57:10,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1404 states have (on average 1.3212250712250713) internal successors, (1855), 1419 states have internal predecessors, (1855), 175 states have call successors, (175), 59 states have call predecessors, (175), 59 states have return successors, (175), 160 states have call predecessors, (175), 175 states have call successors, (175) [2023-12-24 16:57:10,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2205 transitions. [2023-12-24 16:57:10,472 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2205 transitions. Word has length 163 [2023-12-24 16:57:10,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:57:10,473 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2205 transitions. [2023-12-24 16:57:10,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2205 transitions. [2023-12-24 16:57:10,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 16:57:10,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:57:10,474 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:10,488 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 16:57:10,684 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 16:57:10,684 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:57:10,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:57:10,685 INFO L85 PathProgramCache]: Analyzing trace with hash -122888356, now seen corresponding path program 1 times [2023-12-24 16:57:10,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:57:10,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072727234] [2023-12-24 16:57:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:10,686 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 16:57:10,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:57:10,687 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 16:57:10,691 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 16:57:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:11,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:57:11,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:57:12,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 26 [2023-12-24 16:57:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 40 proven. 405 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-24 16:57:12,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:57:12,888 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:57:12,889 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 30 treesize of output 25 [2023-12-24 16:57:13,189 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 69 proven. 42 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2023-12-24 16:57:13,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:57:13,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072727234] [2023-12-24 16:57:13,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072727234] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:57:13,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:57:13,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2023-12-24 16:57:13,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323473224] [2023-12-24 16:57:13,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:57:13,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 16:57:13,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:57:13,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 16:57:13,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:57:13,191 INFO L87 Difference]: Start difference. First operand 1639 states and 2205 transitions. Second operand has 20 states, 16 states have (on average 6.1875) internal successors, (99), 18 states have internal predecessors, (99), 7 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 5 states have call predecessors, (40), 7 states have call successors, (40) [2023-12-24 16:57:14,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:57:14,786 INFO L93 Difference]: Finished difference Result 2584 states and 3482 transitions. [2023-12-24 16:57:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 16:57:14,787 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 6.1875) internal successors, (99), 18 states have internal predecessors, (99), 7 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 5 states have call predecessors, (40), 7 states have call successors, (40) Word has length 163 [2023-12-24 16:57:14,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:57:14,791 INFO L225 Difference]: With dead ends: 2584 [2023-12-24 16:57:14,791 INFO L226 Difference]: Without dead ends: 1652 [2023-12-24 16:57:14,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 306 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:57:14,793 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 472 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:57:14,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1360 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 16:57:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2023-12-24 16:57:14,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1622. [2023-12-24 16:57:14,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1387 states have (on average 1.3165104542177362) internal successors, (1826), 1402 states have internal predecessors, (1826), 175 states have call successors, (175), 59 states have call predecessors, (175), 59 states have return successors, (175), 160 states have call predecessors, (175), 175 states have call successors, (175) [2023-12-24 16:57:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2176 transitions. [2023-12-24 16:57:14,923 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2176 transitions. Word has length 163 [2023-12-24 16:57:14,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:57:14,923 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 2176 transitions. [2023-12-24 16:57:14,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 6.1875) internal successors, (99), 18 states have internal predecessors, (99), 7 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 5 states have call predecessors, (40), 7 states have call successors, (40) [2023-12-24 16:57:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2176 transitions. [2023-12-24 16:57:14,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 16:57:14,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:57:14,924 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:14,939 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 16:57:15,124 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 16:57:15,125 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:57:15,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:57:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash 553345944, now seen corresponding path program 1 times [2023-12-24 16:57:15,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:57:15,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651422333] [2023-12-24 16:57:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:15,126 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 16:57:15,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:57:15,127 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 16:57:15,127 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 16:57:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:15,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:57:15,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:57:16,118 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 17 treesize of output 9 [2023-12-24 16:57:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:57:16,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:57:16,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:57:16,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651422333] [2023-12-24 16:57:16,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651422333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:57:16,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:57:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:57:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481674328] [2023-12-24 16:57:16,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:57:16,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:57:16,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:57:16,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:57:16,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:57:16,132 INFO L87 Difference]: Start difference. First operand 1622 states and 2176 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:57:16,413 INFO L93 Difference]: Finished difference Result 3214 states and 4306 transitions. [2023-12-24 16:57:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:57:16,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2023-12-24 16:57:16,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:57:16,417 INFO L225 Difference]: With dead ends: 3214 [2023-12-24 16:57:16,418 INFO L226 Difference]: Without dead ends: 1724 [2023-12-24 16:57:16,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 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 16:57:16,419 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 90 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:57:16,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 471 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:57:16,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2023-12-24 16:57:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1598. [2023-12-24 16:57:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1363 states have (on average 1.3088774761555393) internal successors, (1784), 1378 states have internal predecessors, (1784), 175 states have call successors, (175), 59 states have call predecessors, (175), 59 states have return successors, (175), 160 states have call predecessors, (175), 175 states have call successors, (175) [2023-12-24 16:57:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2134 transitions. [2023-12-24 16:57:16,533 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2134 transitions. Word has length 164 [2023-12-24 16:57:16,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:57:16,534 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2134 transitions. [2023-12-24 16:57:16,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2134 transitions. [2023-12-24 16:57:16,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 16:57:16,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:57:16,535 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:16,549 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 16:57:16,747 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 16:57:16,747 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:57:16,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:57:16,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1650118555, now seen corresponding path program 1 times [2023-12-24 16:57:16,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:57:16,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968142240] [2023-12-24 16:57:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:16,748 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 16:57:16,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:57:16,749 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 16:57:16,750 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 16:57:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:17,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:57:17,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:57:21,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-12-24 16:57:21,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:57:21,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:57:21,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:57:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 440 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-12-24 16:57:21,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:57:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:57:24,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:57:24,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968142240] [2023-12-24 16:57:24,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968142240] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:57:24,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:57:24,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-24 16:57:24,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626814037] [2023-12-24 16:57:24,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:57:24,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:57:24,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:57:24,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:57:24,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:57:24,691 INFO L87 Difference]: Start difference. First operand 1598 states and 2134 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:57:26,999 INFO L93 Difference]: Finished difference Result 3743 states and 5026 transitions. [2023-12-24 16:57:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:57:27,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 165 [2023-12-24 16:57:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:57:27,024 INFO L225 Difference]: With dead ends: 3743 [2023-12-24 16:57:27,024 INFO L226 Difference]: Without dead ends: 2277 [2023-12-24 16:57:27,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:57:27,026 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 67 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:57:27,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 454 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 16:57:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2023-12-24 16:57:27,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2163. [2023-12-24 16:57:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 1928 states have (on average 1.329875518672199) internal successors, (2564), 1943 states have internal predecessors, (2564), 175 states have call successors, (175), 59 states have call predecessors, (175), 59 states have return successors, (175), 160 states have call predecessors, (175), 175 states have call successors, (175) [2023-12-24 16:57:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2914 transitions. [2023-12-24 16:57:27,156 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2914 transitions. Word has length 165 [2023-12-24 16:57:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:57:27,157 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 2914 transitions. [2023-12-24 16:57:27,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2914 transitions. [2023-12-24 16:57:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 16:57:27,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:57:27,158 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:27,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 16:57:27,364 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 16:57:27,364 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:57:27,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:57:27,365 INFO L85 PathProgramCache]: Analyzing trace with hash 874495603, now seen corresponding path program 1 times [2023-12-24 16:57:27,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:57:27,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950369966] [2023-12-24 16:57:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:27,365 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 16:57:27,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:57:27,366 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 16:57:27,367 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 16:57:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:27,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:57:27,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:57:28,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:57:28,343 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:57:28,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:57:28,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:57:28,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950369966] [2023-12-24 16:57:28,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950369966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:57:28,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:57:28,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:57:28,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433167853] [2023-12-24 16:57:28,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:57:28,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:57:28,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:57:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:57:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:57:28,345 INFO L87 Difference]: Start difference. First operand 2163 states and 2914 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:28,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:57:28,621 INFO L93 Difference]: Finished difference Result 4201 states and 5664 transitions. [2023-12-24 16:57:28,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:57:28,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 166 [2023-12-24 16:57:28,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:57:28,626 INFO L225 Difference]: With dead ends: 4201 [2023-12-24 16:57:28,626 INFO L226 Difference]: Without dead ends: 2177 [2023-12-24 16:57:28,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 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 16:57:28,628 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 74 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:57:28,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 463 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:57:28,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2023-12-24 16:57:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 2163. [2023-12-24 16:57:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 1928 states have (on average 1.3262448132780082) internal successors, (2557), 1943 states have internal predecessors, (2557), 175 states have call successors, (175), 59 states have call predecessors, (175), 59 states have return successors, (175), 160 states have call predecessors, (175), 175 states have call successors, (175) [2023-12-24 16:57:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2907 transitions. [2023-12-24 16:57:28,766 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2907 transitions. Word has length 166 [2023-12-24 16:57:28,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:57:28,766 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 2907 transitions. [2023-12-24 16:57:28,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:28,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2907 transitions. [2023-12-24 16:57:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 16:57:28,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:57:28,767 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:28,782 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 16:57:28,973 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 16:57:28,973 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:57:28,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:57:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash 733946993, now seen corresponding path program 1 times [2023-12-24 16:57:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:57:28,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029783934] [2023-12-24 16:57:28,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:28,974 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 16:57:28,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:57:28,975 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 16:57:28,976 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 (34)] Waiting until timeout for monitored process [2023-12-24 16:57:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:29,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:57:29,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:57:30,427 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 16:57:30,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:57:30,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:57:30,596 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:57:30,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:57:30,810 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:57:30,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:57:30,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029783934] [2023-12-24 16:57:30,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029783934] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:57:30,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:57:30,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2023-12-24 16:57:30,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825728332] [2023-12-24 16:57:30,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:57:30,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:57:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:57:30,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:57:30,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:57:30,812 INFO L87 Difference]: Start difference. First operand 2163 states and 2907 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:31,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:57:31,310 INFO L93 Difference]: Finished difference Result 2197 states and 2956 transitions. [2023-12-24 16:57:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:57:31,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 166 [2023-12-24 16:57:31,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:57:31,320 INFO L225 Difference]: With dead ends: 2197 [2023-12-24 16:57:31,320 INFO L226 Difference]: Without dead ends: 2195 [2023-12-24 16:57:31,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:57:31,321 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 132 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:57:31,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1297 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:57:31,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2023-12-24 16:57:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2147. [2023-12-24 16:57:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 1912 states have (on average 1.3289748953974896) internal successors, (2541), 1927 states have internal predecessors, (2541), 175 states have call successors, (175), 59 states have call predecessors, (175), 59 states have return successors, (175), 160 states have call predecessors, (175), 175 states have call successors, (175) [2023-12-24 16:57:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2891 transitions. [2023-12-24 16:57:31,450 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2891 transitions. Word has length 166 [2023-12-24 16:57:31,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:57:31,450 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 2891 transitions. [2023-12-24 16:57:31,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 16:57:31,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2891 transitions. [2023-12-24 16:57:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 16:57:31,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:57:31,451 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:31,464 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 16:57:31,663 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 16:57:31,664 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:57:31,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:57:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1220282429, now seen corresponding path program 1 times [2023-12-24 16:57:31,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:57:31,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146694247] [2023-12-24 16:57:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:31,665 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 16:57:31,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:57:31,666 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 16:57:31,669 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 16:57:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:32,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:57:32,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:57:33,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 26 [2023-12-24 16:57:33,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:57:33,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:57:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 44 proven. 351 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-12-24 16:57:33,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:57:33,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 22 [2023-12-24 16:57:33,560 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-24 16:57:33,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:57:33,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2023-12-24 16:57:34,152 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:57:34,152 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 30 treesize of output 25 [2023-12-24 16:57:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 81 proven. 30 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2023-12-24 16:57:34,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:57:34,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146694247] [2023-12-24 16:57:34,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146694247] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:57:34,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:57:34,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2023-12-24 16:57:34,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878751045] [2023-12-24 16:57:34,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:57:34,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 16:57:34,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:57:34,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 16:57:34,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:57:34,452 INFO L87 Difference]: Start difference. First operand 2147 states and 2891 transitions. Second operand has 23 states, 19 states have (on average 6.157894736842105) internal successors, (117), 21 states have internal predecessors, (117), 7 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 5 states have call predecessors, (40), 7 states have call successors, (40) [2023-12-24 16:57:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:57:36,625 INFO L93 Difference]: Finished difference Result 3482 states and 4686 transitions. [2023-12-24 16:57:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 16:57:36,632 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 6.157894736842105) internal successors, (117), 21 states have internal predecessors, (117), 7 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 5 states have call predecessors, (40), 7 states have call successors, (40) Word has length 166 [2023-12-24 16:57:36,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:57:36,635 INFO L225 Difference]: With dead ends: 3482 [2023-12-24 16:57:36,635 INFO L226 Difference]: Without dead ends: 2209 [2023-12-24 16:57:36,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=397, Invalid=1163, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 16:57:36,637 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 689 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:57:36,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 1319 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 16:57:36,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2023-12-24 16:57:36,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 2083. [2023-12-24 16:57:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 1844 states have (on average 1.3085683297180044) internal successors, (2413), 1859 states have internal predecessors, (2413), 175 states have call successors, (175), 63 states have call predecessors, (175), 63 states have return successors, (175), 160 states have call predecessors, (175), 175 states have call successors, (175) [2023-12-24 16:57:36,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2763 transitions. [2023-12-24 16:57:36,778 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2763 transitions. Word has length 166 [2023-12-24 16:57:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:57:36,778 INFO L495 AbstractCegarLoop]: Abstraction has 2083 states and 2763 transitions. [2023-12-24 16:57:36,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 6.157894736842105) internal successors, (117), 21 states have internal predecessors, (117), 7 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 5 states have call predecessors, (40), 7 states have call successors, (40) [2023-12-24 16:57:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2763 transitions. [2023-12-24 16:57:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-12-24 16:57:36,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:57:36,781 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-24 16:57:36,796 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 16:57:36,996 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 16:57:36,996 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:57:36,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:57:36,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1429274957, now seen corresponding path program 1 times [2023-12-24 16:57:36,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:57:36,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766658782] [2023-12-24 16:57:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:36,998 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 16:57:36,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:57:36,999 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 16:57:37,000 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 16:57:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:37,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:57:37,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:57:39,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:57:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 36 proven. 1684 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2023-12-24 16:57:39,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:57:39,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:57:39,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766658782] [2023-12-24 16:57:39,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766658782] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:57:39,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1292971098] [2023-12-24 16:57:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:39,575 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:57:39,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:57:39,576 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:57:39,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-12-24 16:57:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:42,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:57:42,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:57:46,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:57:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 36 proven. 1684 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2023-12-24 16:57:46,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:57:46,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1292971098] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:57:46,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:57:46,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-24 16:57:46,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411845021] [2023-12-24 16:57:46,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:57:46,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 16:57:46,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:57:46,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 16:57:46,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:57:46,076 INFO L87 Difference]: Start difference. First operand 2083 states and 2763 transitions. Second operand has 14 states, 12 states have (on average 18.916666666666668) internal successors, (227), 12 states have internal predecessors, (227), 6 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (76), 4 states have call predecessors, (76), 6 states have call successors, (76) [2023-12-24 16:57:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:57:47,187 INFO L93 Difference]: Finished difference Result 3600 states and 4754 transitions. [2023-12-24 16:57:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:57:47,199 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 18.916666666666668) internal successors, (227), 12 states have internal predecessors, (227), 6 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (76), 4 states have call predecessors, (76), 6 states have call successors, (76) Word has length 317 [2023-12-24 16:57:47,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:57:47,202 INFO L225 Difference]: With dead ends: 3600 [2023-12-24 16:57:47,202 INFO L226 Difference]: Without dead ends: 1663 [2023-12-24 16:57:47,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:57:47,204 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 245 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:57:47,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 770 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:57:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2023-12-24 16:57:47,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1633. [2023-12-24 16:57:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1419 states have (on average 1.291754756871036) internal successors, (1833), 1429 states have internal predecessors, (1833), 155 states have call successors, (155), 58 states have call predecessors, (155), 58 states have return successors, (155), 145 states have call predecessors, (155), 155 states have call successors, (155) [2023-12-24 16:57:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2143 transitions. [2023-12-24 16:57:47,330 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2143 transitions. Word has length 317 [2023-12-24 16:57:47,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:57:47,330 INFO L495 AbstractCegarLoop]: Abstraction has 1633 states and 2143 transitions. [2023-12-24 16:57:47,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 18.916666666666668) internal successors, (227), 12 states have internal predecessors, (227), 6 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (76), 4 states have call predecessors, (76), 6 states have call successors, (76) [2023-12-24 16:57:47,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2143 transitions. [2023-12-24 16:57:47,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-12-24 16:57:47,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:57:47,332 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-24 16:57:47,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2023-12-24 16:57:47,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-24 16:57:47,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:57:47,751 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:57:47,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:57:47,751 INFO L85 PathProgramCache]: Analyzing trace with hash -608570041, now seen corresponding path program 1 times [2023-12-24 16:57:47,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:57:47,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607926103] [2023-12-24 16:57:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:47,752 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 16:57:47,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:57:47,753 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 16:57:47,768 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 16:57:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:48,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:57:48,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:57:52,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:57:52,848 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 19 treesize of output 11 [2023-12-24 16:57:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3195 backedges. 35 proven. 1907 refuted. 0 times theorem prover too weak. 1253 trivial. 0 not checked. [2023-12-24 16:57:53,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:57:54,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:57:54,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607926103] [2023-12-24 16:57:54,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607926103] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:57:54,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1830573973] [2023-12-24 16:57:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:57:54,875 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:57:54,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:57:54,876 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:57:54,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-12-24 16:57:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:57:57,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:57:57,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:58:07,656 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 15 treesize of output 7 [2023-12-24 16:58:07,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:58:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3195 backedges. 35 proven. 1907 refuted. 0 times theorem prover too weak. 1253 trivial. 0 not checked. [2023-12-24 16:58:08,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:58:08,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1830573973] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:58:08,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:58:08,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-24 16:58:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144121452] [2023-12-24 16:58:08,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:58:08,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-24 16:58:08,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:58:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-24 16:58:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2023-12-24 16:58:08,392 INFO L87 Difference]: Start difference. First operand 1633 states and 2143 transitions. Second operand has 27 states, 23 states have (on average 10.608695652173912) internal successors, (244), 22 states have internal predecessors, (244), 10 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 6 states have call predecessors, (76), 10 states have call successors, (76) [2023-12-24 16:58:12,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:58:12,816 INFO L93 Difference]: Finished difference Result 2563 states and 3308 transitions. [2023-12-24 16:58:12,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 16:58:12,827 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 10.608695652173912) internal successors, (244), 22 states have internal predecessors, (244), 10 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 6 states have call predecessors, (76), 10 states have call successors, (76) Word has length 320 [2023-12-24 16:58:12,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:58:12,829 INFO L225 Difference]: With dead ends: 2563 [2023-12-24 16:58:12,829 INFO L226 Difference]: Without dead ends: 1076 [2023-12-24 16:58:12,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 661 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=364, Invalid=1706, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 16:58:12,831 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 497 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:58:12,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 1267 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 16:58:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2023-12-24 16:58:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1018. [2023-12-24 16:58:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 863 states have (on average 1.2549246813441484) internal successors, (1083), 870 states have internal predecessors, (1083), 101 states have call successors, (101), 53 states have call predecessors, (101), 53 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-24 16:58:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1285 transitions. [2023-12-24 16:58:12,934 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1285 transitions. Word has length 320 [2023-12-24 16:58:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:58:12,934 INFO L495 AbstractCegarLoop]: Abstraction has 1018 states and 1285 transitions. [2023-12-24 16:58:12,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 10.608695652173912) internal successors, (244), 22 states have internal predecessors, (244), 10 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 6 states have call predecessors, (76), 10 states have call successors, (76) [2023-12-24 16:58:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1285 transitions. [2023-12-24 16:58:12,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-12-24 16:58:12,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:58:12,936 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-24 16:58:12,958 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 16:58:13,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2023-12-24 16:58:13,337 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=3,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:58:13,337 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:58:13,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:58:13,338 INFO L85 PathProgramCache]: Analyzing trace with hash -49917014, now seen corresponding path program 1 times [2023-12-24 16:58:13,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:58:13,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923742019] [2023-12-24 16:58:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:58:13,338 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 16:58:13,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:58:13,339 INFO L229 MonitoredProcess]: Starting monitored process 40 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 16:58:13,340 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 (40)] Waiting until timeout for monitored process [2023-12-24 16:58:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:58:14,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:58:14,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:58:18,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:58:18,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:58:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3195 backedges. 25 proven. 1917 refuted. 0 times theorem prover too weak. 1253 trivial. 0 not checked. [2023-12-24 16:58:18,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:58:21,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:58:21,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923742019] [2023-12-24 16:58:21,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923742019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:58:21,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [991012672] [2023-12-24 16:58:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:58:21,624 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:58:21,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:58:21,625 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:58:21,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-12-24 16:58:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:58:24,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:58:24,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:58:34,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:58:34,641 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 19 treesize of output 11 [2023-12-24 16:58:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3195 backedges. 25 proven. 1917 refuted. 0 times theorem prover too weak. 1253 trivial. 0 not checked. [2023-12-24 16:58:34,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:58:35,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [991012672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:58:35,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:58:35,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-24 16:58:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528627661] [2023-12-24 16:58:35,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:58:35,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-24 16:58:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:58:35,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-24 16:58:35,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2023-12-24 16:58:35,857 INFO L87 Difference]: Start difference. First operand 1018 states and 1285 transitions. Second operand has 27 states, 23 states have (on average 11.08695652173913) internal successors, (255), 22 states have internal predecessors, (255), 10 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 6 states have call predecessors, (76), 10 states have call successors, (76) [2023-12-24 16:58:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:58:40,584 INFO L93 Difference]: Finished difference Result 2018 states and 2501 transitions. [2023-12-24 16:58:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 16:58:40,585 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 11.08695652173913) internal successors, (255), 22 states have internal predecessors, (255), 10 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 6 states have call predecessors, (76), 10 states have call successors, (76) Word has length 321 [2023-12-24 16:58:40,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:58:40,586 INFO L225 Difference]: With dead ends: 2018 [2023-12-24 16:58:40,586 INFO L226 Difference]: Without dead ends: 1150 [2023-12-24 16:58:40,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 665 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=364, Invalid=1706, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 16:58:40,592 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 794 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:58:40,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1240 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 16:58:40,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2023-12-24 16:58:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 912. [2023-12-24 16:58:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 757 states have (on average 1.2166446499339498) internal successors, (921), 764 states have internal predecessors, (921), 101 states have call successors, (101), 53 states have call predecessors, (101), 53 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-24 16:58:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1123 transitions. [2023-12-24 16:58:40,700 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1123 transitions. Word has length 321 [2023-12-24 16:58:40,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:58:40,701 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1123 transitions. [2023-12-24 16:58:40,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 11.08695652173913) internal successors, (255), 22 states have internal predecessors, (255), 10 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 6 states have call predecessors, (76), 10 states have call successors, (76) [2023-12-24 16:58:40,701 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1123 transitions. [2023-12-24 16:58:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-24 16:58:40,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:58:40,703 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-24 16:58:40,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2023-12-24 16:58:40,940 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 (40)] Forceful destruction successful, exit code 0 [2023-12-24 16:58:41,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:58:41,112 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:58:41,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:58:41,113 INFO L85 PathProgramCache]: Analyzing trace with hash -219800705, now seen corresponding path program 1 times [2023-12-24 16:58:41,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:58:41,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422272432] [2023-12-24 16:58:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:58:41,114 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 16:58:41,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:58:41,115 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 16:58:41,121 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 16:58:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:58:41,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 16:58:41,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:58:43,206 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 42 treesize of output 26 [2023-12-24 16:58:43,255 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 16:58:45,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:58:45,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 26 [2023-12-24 16:58:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3194 backedges. 1199 proven. 1265 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2023-12-24 16:58:45,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:58:47,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:58:47,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2023-12-24 16:58:48,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 22 [2023-12-24 16:58:48,412 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-24 16:58:48,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:58:48,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2023-12-24 16:58:49,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:58:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3194 backedges. 313 proven. 211 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-12-24 16:58:49,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:58:49,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422272432] [2023-12-24 16:58:49,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422272432] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:58:49,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:58:49,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 46 [2023-12-24 16:58:49,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551423517] [2023-12-24 16:58:49,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:58:49,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-24 16:58:49,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:58:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-24 16:58:49,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1787, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 16:58:49,945 INFO L87 Difference]: Start difference. First operand 912 states and 1123 transitions. Second operand has 46 states, 38 states have (on average 6.578947368421052) internal successors, (250), 42 states have internal predecessors, (250), 15 states have call successors, (80), 7 states have call predecessors, (80), 13 states have return successors, (80), 10 states have call predecessors, (80), 15 states have call successors, (80) [2023-12-24 16:58:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:58:53,665 INFO L93 Difference]: Finished difference Result 1524 states and 1858 transitions. [2023-12-24 16:58:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 16:58:53,666 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 38 states have (on average 6.578947368421052) internal successors, (250), 42 states have internal predecessors, (250), 15 states have call successors, (80), 7 states have call predecessors, (80), 13 states have return successors, (80), 10 states have call predecessors, (80), 15 states have call successors, (80) Word has length 322 [2023-12-24 16:58:53,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:58:53,666 INFO L225 Difference]: With dead ends: 1524 [2023-12-24 16:58:53,666 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 16:58:53,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 598 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=820, Invalid=3212, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 16:58:53,668 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 575 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:58:53,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 2899 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 16:58:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 16:58:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 16:58:53,669 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 16:58:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 16:58:53,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 322 [2023-12-24 16:58:53,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:58:53,669 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 16:58:53,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 38 states have (on average 6.578947368421052) internal successors, (250), 42 states have internal predecessors, (250), 15 states have call successors, (80), 7 states have call predecessors, (80), 13 states have return successors, (80), 10 states have call predecessors, (80), 15 states have call successors, (80) [2023-12-24 16:58:53,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 16:58:53,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 16:58:53,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 16:58:53,693 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 16:58:53,872 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 16:58:53,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:59:17,131 WARN L293 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 186 DAG size of output: 145 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:00:22,009 WARN L293 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 185 DAG size of output: 167 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:00:38,899 WARN L293 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 186 DAG size of output: 145 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:00:57,926 WARN L293 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 185 DAG size of output: 167 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:01:17,650 WARN L293 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 186 DAG size of output: 145 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:02:10,152 WARN L293 SmtUtils]: Spent 39.49s on a formula simplification. DAG size of input: 185 DAG size of output: 147 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-24 17:03:00,621 WARN L293 SmtUtils]: Spent 50.47s on a formula simplification. DAG size of input: 152 DAG size of output: 149 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-24 17:04:31,954 WARN L293 SmtUtils]: Spent 1.52m on a formula simplification. DAG size of input: 206 DAG size of output: 175 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-24 17:05:30,261 WARN L293 SmtUtils]: Spent 58.31s on a formula simplification. DAG size of input: 150 DAG size of output: 145 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-24 17:06:24,496 WARN L293 SmtUtils]: Spent 54.23s on a formula simplification. DAG size of input: 150 DAG size of output: 145 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-24 17:07:06,023 WARN L293 SmtUtils]: Spent 41.52s on a formula simplification. DAG size of input: 201 DAG size of output: 152 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-24 17:07:44,924 WARN L293 SmtUtils]: Spent 38.90s on a formula simplification. DAG size of input: 185 DAG size of output: 147 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) Received shutdown request... [2023-12-24 17:08:08,985 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 17:08:10,185 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-24 17:08:10,207 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack at de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.restore(UndoableWrapperScript.java:87) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeIcfgHoareAnnotation(NwaCegarLoop.java:539) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop$CegarLoopResultBuilder.getResult(AbstractCegarLoop.java:873) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-24 17:08:10,212 INFO L158 Benchmark]: Toolchain (without parser) took 868254.08ms. Allocated memory was 300.9MB in the beginning and 724.6MB in the end (delta: 423.6MB). Free memory was 246.0MB in the beginning and 342.1MB in the end (delta: -96.1MB). Peak memory consumption was 437.4MB. Max. memory is 8.0GB. [2023-12-24 17:08:10,212 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 212.9MB. Free memory was 161.8MB in the beginning and 161.7MB in the end (delta: 144.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 17:08:10,212 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.25ms. Allocated memory is still 300.9MB. Free memory was 245.7MB in the beginning and 230.2MB in the end (delta: 15.5MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 17:08:10,212 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.99ms. Allocated memory is still 300.9MB. Free memory was 230.2MB in the beginning and 226.6MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 17:08:10,212 INFO L158 Benchmark]: Boogie Preprocessor took 88.03ms. Allocated memory is still 300.9MB. Free memory was 226.6MB in the beginning and 217.4MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-24 17:08:10,212 INFO L158 Benchmark]: RCFGBuilder took 2851.80ms. Allocated memory is still 300.9MB. Free memory was 217.4MB in the beginning and 209.3MB in the end (delta: 8.1MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. [2023-12-24 17:08:10,213 INFO L158 Benchmark]: TraceAbstraction took 865028.88ms. Allocated memory was 300.9MB in the beginning and 724.6MB in the end (delta: 423.6MB). Free memory was 208.8MB in the beginning and 342.1MB in the end (delta: -133.3MB). Peak memory consumption was 399.3MB. Max. memory is 8.0GB. [2023-12-24 17:08:10,213 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-24 17:08:10,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 212.9MB. Free memory was 161.8MB in the beginning and 161.7MB in the end (delta: 144.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 243.25ms. Allocated memory is still 300.9MB. Free memory was 245.7MB in the beginning and 230.2MB in the end (delta: 15.5MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.99ms. Allocated memory is still 300.9MB. Free memory was 230.2MB in the beginning and 226.6MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 88.03ms. Allocated memory is still 300.9MB. Free memory was 226.6MB in the beginning and 217.4MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 2851.80ms. Allocated memory is still 300.9MB. Free memory was 217.4MB in the beginning and 209.3MB in the end (delta: 8.1MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. * TraceAbstraction took 865028.88ms. Allocated memory was 300.9MB in the beginning and 724.6MB in the end (delta: 423.6MB). Free memory was 208.8MB in the beginning and 342.1MB in the end (delta: -133.3MB). Peak memory consumption was 399.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Not enough levels on assertion stack de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Not enough levels on assertion stack: de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) RESULT: Ultimate could not prove your program: Toolchain returned no result. !ENTRY org.eclipse.osgi 4 0 2023-12-24 17:08:10.222 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07298127f/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) Completed graceful shutdown