/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-28.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:19:02,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:19:02,193 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 16:19:02,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:19:02,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:19:02,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:19:02,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:19:02,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:19:02,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:19:02,232 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:19:02,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:19:02,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:19:02,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:19:02,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:19:02,235 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:19:02,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:19:02,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:19:02,236 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:19:02,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:19:02,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:19:02,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:19:02,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:19:02,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:19:02,238 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:19:02,238 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:19:02,238 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:19:02,238 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:19:02,238 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:19:02,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:19:02,239 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:19:02,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:19:02,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:19:02,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:19:02,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:19:02,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:19:02,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:19:02,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:19:02,241 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:19:02,241 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:19:02,241 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:19:02,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:19:02,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:19:02,241 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:19:02,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:19:02,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:19:02,242 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:19:02,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:19:02,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:19:02,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:19:02,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:19:02,509 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:19:02,510 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:19:02,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-28.i [2023-12-24 16:19:03,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:19:03,901 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:19:03,901 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-28.i [2023-12-24 16:19:03,910 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e76d954/067f906c13a04ac99fe259bd7ee0ef20/FLAGee35a2662 [2023-12-24 16:19:03,928 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e76d954/067f906c13a04ac99fe259bd7ee0ef20 [2023-12-24 16:19:03,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:19:03,931 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:19:03,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:19:03,933 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:19:03,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:19:03,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:19:03" (1/1) ... [2023-12-24 16:19:03,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73066041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:03, skipping insertion in model container [2023-12-24 16:19:03,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:19:03" (1/1) ... [2023-12-24 16:19:03,972 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:19:04,136 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-28.i[916,929] [2023-12-24 16:19:04,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:19:04,242 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:19:04,253 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-28.i[916,929] [2023-12-24 16:19:04,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:19:04,305 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:19:04,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04 WrapperNode [2023-12-24 16:19:04,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:19:04,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:19:04,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:19:04,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:19:04,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,372 INFO L138 Inliner]: procedures = 36, calls = 192, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 594 [2023-12-24 16:19:04,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:19:04,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:19:04,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:19:04,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:19:04,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,419 INFO L175 MemorySlicer]: Split 152 memory accesses to 16 slices as follows [2, 5, 8, 8, 22, 20, 12, 5, 14, 14, 3, 5, 8, 6, 3, 17]. 14 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 17 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1]. [2023-12-24 16:19:04,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,449 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:19:04,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:19:04,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:19:04,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:19:04,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (1/1) ... [2023-12-24 16:19:04,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:19:04,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:19:04,513 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 16:19:04,526 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 16:19:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:19:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:19:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:19:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:19:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:19:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:19:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:19:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:19:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:19:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:19:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:19:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:19:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 16:19:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#12 [2023-12-24 16:19:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#13 [2023-12-24 16:19:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#14 [2023-12-24 16:19:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#15 [2023-12-24 16:19:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 16:19:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 16:19:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 16:19:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 16:19:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 16:19:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 16:19:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 16:19:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 16:19:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 16:19:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 16:19:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-24 16:19:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2023-12-24 16:19:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#12 [2023-12-24 16:19:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#13 [2023-12-24 16:19:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#14 [2023-12-24 16:19:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#15 [2023-12-24 16:19:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:19:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:19:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:19:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:19:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:19:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:19:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:19:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:19:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:19:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:19:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:19:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 16:19:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2023-12-24 16:19:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#13 [2023-12-24 16:19:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#14 [2023-12-24 16:19:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#15 [2023-12-24 16:19:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 16:19:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 16:19:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 16:19:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 16:19:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 16:19:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 16:19:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 16:19:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 16:19:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-24 16:19:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-24 16:19:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-24 16:19:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2023-12-24 16:19:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#12 [2023-12-24 16:19:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#13 [2023-12-24 16:19:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#14 [2023-12-24 16:19:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#15 [2023-12-24 16:19:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 16:19:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 16:19:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 16:19:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 16:19:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 16:19:04,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 16:19:04,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 16:19:04,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-24 16:19:04,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2023-12-24 16:19:04,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2023-12-24 16:19:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2023-12-24 16:19:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#11 [2023-12-24 16:19:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#12 [2023-12-24 16:19:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#13 [2023-12-24 16:19:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#14 [2023-12-24 16:19:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#15 [2023-12-24 16:19:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 16:19:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 16:19:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 16:19:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 16:19:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 16:19:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 16:19:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 16:19:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 16:19:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-24 16:19:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-24 16:19:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-24 16:19:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2023-12-24 16:19:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#12 [2023-12-24 16:19:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#13 [2023-12-24 16:19:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#14 [2023-12-24 16:19:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#15 [2023-12-24 16:19:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 16:19:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 16:19:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 16:19:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 16:19:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 16:19:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 16:19:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 16:19:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 16:19:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 16:19:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 16:19:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-24 16:19:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2023-12-24 16:19:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#12 [2023-12-24 16:19:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#13 [2023-12-24 16:19:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#14 [2023-12-24 16:19:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#15 [2023-12-24 16:19:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 16:19:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 16:19:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 16:19:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 16:19:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 16:19:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 16:19:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 16:19:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-24 16:19:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2023-12-24 16:19:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2023-12-24 16:19:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2023-12-24 16:19:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#11 [2023-12-24 16:19:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#12 [2023-12-24 16:19:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#13 [2023-12-24 16:19:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#14 [2023-12-24 16:19:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#15 [2023-12-24 16:19:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 16:19:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 16:19:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 16:19:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 16:19:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 16:19:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 16:19:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 16:19:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-24 16:19:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2023-12-24 16:19:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2023-12-24 16:19:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2023-12-24 16:19:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#11 [2023-12-24 16:19:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#12 [2023-12-24 16:19:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#13 [2023-12-24 16:19:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#14 [2023-12-24 16:19:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#15 [2023-12-24 16:19:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:19:04,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:19:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:19:04,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:19:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:19:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:19:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:19:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:19:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:19:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:19:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:19:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:19:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:19:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:19:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:19:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 16:19:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#12 [2023-12-24 16:19:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#13 [2023-12-24 16:19:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#14 [2023-12-24 16:19:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#15 [2023-12-24 16:19:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 16:19:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 16:19:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#12 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#13 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#14 [2023-12-24 16:19:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#15 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#12 [2023-12-24 16:19:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#13 [2023-12-24 16:19:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#14 [2023-12-24 16:19:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#15 [2023-12-24 16:19:04,865 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:19:04,867 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:19:05,498 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:19:05,544 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:19:05,544 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:19:05,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:19:05 BoogieIcfgContainer [2023-12-24 16:19:05,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:19:05,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:19:05,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:19:05,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:19:05,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:19:03" (1/3) ... [2023-12-24 16:19:05,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44bc8ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:19:05, skipping insertion in model container [2023-12-24 16:19:05,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:19:04" (2/3) ... [2023-12-24 16:19:05,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44bc8ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:19:05, skipping insertion in model container [2023-12-24 16:19:05,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:19:05" (3/3) ... [2023-12-24 16:19:05,551 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-28.i [2023-12-24 16:19:05,566 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:19:05,566 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:19:05,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:19:05,614 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;@7e84da01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:19:05,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:19:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 91 states have (on average 1.4615384615384615) internal successors, (133), 92 states have internal predecessors, (133), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 16:19:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 16:19:05,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:05,630 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:05,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:05,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:05,635 INFO L85 PathProgramCache]: Analyzing trace with hash -257213236, now seen corresponding path program 1 times [2023-12-24 16:19:05,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:05,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672057710] [2023-12-24 16:19:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:05,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:05,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:05,652 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 16:19:05,660 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 16:19:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:06,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:19:06,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-12-24 16:19:06,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:19:06,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:06,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672057710] [2023-12-24 16:19:06,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672057710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:19:06,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:19:06,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:19:06,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712125157] [2023-12-24 16:19:06,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:06,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:19:06,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:06,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:19:06,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:19:06,226 INFO L87 Difference]: Start difference. First operand has 108 states, 91 states have (on average 1.4615384615384615) internal successors, (133), 92 states have internal predecessors, (133), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 16:19:06,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:06,288 INFO L93 Difference]: Finished difference Result 213 states and 334 transitions. [2023-12-24 16:19:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:19:06,294 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2023-12-24 16:19:06,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:06,299 INFO L225 Difference]: With dead ends: 213 [2023-12-24 16:19:06,300 INFO L226 Difference]: Without dead ends: 106 [2023-12-24 16:19:06,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 122 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 16:19:06,304 INFO L413 NwaCegarLoop]: 152 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, 152 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 16:19:06,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:19:06,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-24 16:19:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-24 16:19:06,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 90 states have internal predecessors, (128), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 16:19:06,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 156 transitions. [2023-12-24 16:19:06,339 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 156 transitions. Word has length 123 [2023-12-24 16:19:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:06,340 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 156 transitions. [2023-12-24 16:19:06,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 16:19:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 156 transitions. [2023-12-24 16:19:06,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 16:19:06,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:06,343 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:06,356 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 16:19:06,555 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 16:19:06,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:06,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1337707296, now seen corresponding path program 1 times [2023-12-24 16:19:06,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:06,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596839009] [2023-12-24 16:19:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:06,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:06,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:06,559 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 16:19:06,564 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 16:19:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:07,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:19:07,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:07,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:19:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:19:07,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:07,736 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:19:07,736 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 16:19:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:19:07,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:07,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596839009] [2023-12-24 16:19:07,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596839009] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:19:07,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:19:07,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-24 16:19:07,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901562801] [2023-12-24 16:19:07,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:19:07,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:19:07,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:07,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:19:07,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:19:07,822 INFO L87 Difference]: Start difference. First operand 106 states and 156 transitions. Second operand has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 13 states have internal predecessors, (86), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 16:19:08,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:08,449 INFO L93 Difference]: Finished difference Result 215 states and 314 transitions. [2023-12-24 16:19:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:19:08,454 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 13 states have internal predecessors, (86), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) Word has length 123 [2023-12-24 16:19:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:08,455 INFO L225 Difference]: With dead ends: 215 [2023-12-24 16:19:08,455 INFO L226 Difference]: Without dead ends: 110 [2023-12-24 16:19:08,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:19:08,457 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 331 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:08,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 547 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:19:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-24 16:19:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-12-24 16:19:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 93 states have (on average 1.3978494623655915) internal successors, (130), 93 states have internal predecessors, (130), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 16:19:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 158 transitions. [2023-12-24 16:19:08,472 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 158 transitions. Word has length 123 [2023-12-24 16:19:08,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:08,478 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 158 transitions. [2023-12-24 16:19:08,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 13 states have internal predecessors, (86), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 16:19:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 158 transitions. [2023-12-24 16:19:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 16:19:08,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:08,484 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:08,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-24 16:19:08,685 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 16:19:08,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:08,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:08,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1826005573, now seen corresponding path program 1 times [2023-12-24 16:19:08,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:08,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071273462] [2023-12-24 16:19:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:08,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:08,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:08,690 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 16:19:08,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 16:19:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:09,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:19:09,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:19:09,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:19:09,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:09,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071273462] [2023-12-24 16:19:09,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071273462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:19:09,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:19:09,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:19:09,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853246034] [2023-12-24 16:19:09,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:09,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:19:09,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:09,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:19:09,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:19:09,221 INFO L87 Difference]: Start difference. First operand 110 states and 158 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:19:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:09,369 INFO L93 Difference]: Finished difference Result 243 states and 349 transitions. [2023-12-24 16:19:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:19:09,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 125 [2023-12-24 16:19:09,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:09,373 INFO L225 Difference]: With dead ends: 243 [2023-12-24 16:19:09,373 INFO L226 Difference]: Without dead ends: 134 [2023-12-24 16:19:09,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:19:09,375 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 53 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:09,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 713 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:19:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-24 16:19:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 116. [2023-12-24 16:19:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 99 states have (on average 1.3737373737373737) internal successors, (136), 99 states have internal predecessors, (136), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 16:19:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 164 transitions. [2023-12-24 16:19:09,388 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 164 transitions. Word has length 125 [2023-12-24 16:19:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:09,389 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 164 transitions. [2023-12-24 16:19:09,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:19:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 164 transitions. [2023-12-24 16:19:09,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 16:19:09,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:09,391 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:09,403 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 16:19:09,600 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 16:19:09,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:09,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:09,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1768747271, now seen corresponding path program 1 times [2023-12-24 16:19:09,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:09,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475238552] [2023-12-24 16:19:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:09,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:09,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:09,603 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 16:19:09,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 16:19:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:10,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:19:10,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:10,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 41 [2023-12-24 16:19:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:19:10,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:19:10,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:10,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475238552] [2023-12-24 16:19:10,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475238552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:19:10,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:19:10,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:19:10,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356802610] [2023-12-24 16:19:10,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:10,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:19:10,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:10,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:19:10,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:19:10,130 INFO L87 Difference]: Start difference. First operand 116 states and 164 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:19:10,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:10,676 INFO L93 Difference]: Finished difference Result 237 states and 336 transitions. [2023-12-24 16:19:10,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:19:10,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 125 [2023-12-24 16:19:10,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:10,679 INFO L225 Difference]: With dead ends: 237 [2023-12-24 16:19:10,679 INFO L226 Difference]: Without dead ends: 122 [2023-12-24 16:19:10,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:19:10,681 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 165 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:10,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 485 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:19:10,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-24 16:19:10,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2023-12-24 16:19:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 99 states have (on average 1.3636363636363635) internal successors, (135), 99 states have internal predecessors, (135), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 16:19:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 163 transitions. [2023-12-24 16:19:10,694 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 163 transitions. Word has length 125 [2023-12-24 16:19:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:10,694 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 163 transitions. [2023-12-24 16:19:10,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:19:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 163 transitions. [2023-12-24 16:19:10,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 16:19:10,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:10,695 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:10,709 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 16:19:10,896 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 16:19:10,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:10,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:10,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1245034111, now seen corresponding path program 1 times [2023-12-24 16:19:10,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:10,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888806656] [2023-12-24 16:19:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:10,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:10,898 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 16:19:10,901 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 16:19:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:11,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:19:11,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:11,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 41 [2023-12-24 16:19:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-24 16:19:11,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:19:11,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:11,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888806656] [2023-12-24 16:19:11,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888806656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:19:11,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:19:11,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:19:11,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696376508] [2023-12-24 16:19:11,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:11,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:19:11,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:11,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:19:11,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:19:11,370 INFO L87 Difference]: Start difference. First operand 116 states and 163 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 16:19:11,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:11,851 INFO L93 Difference]: Finished difference Result 237 states and 334 transitions. [2023-12-24 16:19:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:19:11,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 127 [2023-12-24 16:19:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:11,853 INFO L225 Difference]: With dead ends: 237 [2023-12-24 16:19:11,853 INFO L226 Difference]: Without dead ends: 122 [2023-12-24 16:19:11,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:19:11,854 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 152 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:11,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 480 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:19:11,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-24 16:19:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2023-12-24 16:19:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 99 states have (on average 1.3535353535353536) internal successors, (134), 99 states have internal predecessors, (134), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 16:19:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 162 transitions. [2023-12-24 16:19:11,864 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 162 transitions. Word has length 127 [2023-12-24 16:19:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:11,865 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 162 transitions. [2023-12-24 16:19:11,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 16:19:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 162 transitions. [2023-12-24 16:19:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 16:19:11,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:11,866 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:11,879 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 16:19:12,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:12,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:12,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:12,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1363640519, now seen corresponding path program 1 times [2023-12-24 16:19:12,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:12,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173107033] [2023-12-24 16:19:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:12,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:12,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:12,082 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:19:12,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 16:19:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:12,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:19:12,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:12,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:19:12,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-24 16:19:12,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:19:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 132 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-24 16:19:12,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:19:13,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:13,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173107033] [2023-12-24 16:19:13,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173107033] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:13,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:19:13,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 16:19:13,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925344218] [2023-12-24 16:19:13,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:13,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:19:13,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:13,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:19:13,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:19:13,098 INFO L87 Difference]: Start difference. First operand 116 states and 162 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:19:13,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:13,568 INFO L93 Difference]: Finished difference Result 329 states and 459 transitions. [2023-12-24 16:19:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:19:13,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 129 [2023-12-24 16:19:13,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:13,570 INFO L225 Difference]: With dead ends: 329 [2023-12-24 16:19:13,570 INFO L226 Difference]: Without dead ends: 214 [2023-12-24 16:19:13,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:19:13,572 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 171 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:13,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 583 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:19:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-24 16:19:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 183. [2023-12-24 16:19:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 163 states have (on average 1.3680981595092025) internal successors, (223), 164 states have internal predecessors, (223), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:19:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 255 transitions. [2023-12-24 16:19:13,583 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 255 transitions. Word has length 129 [2023-12-24 16:19:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:13,584 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 255 transitions. [2023-12-24 16:19:13,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:19:13,584 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 255 transitions. [2023-12-24 16:19:13,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 16:19:13,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:13,585 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:13,598 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 (7)] Ended with exit code 0 [2023-12-24 16:19:13,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:13,796 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:13,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:13,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1455844135, now seen corresponding path program 1 times [2023-12-24 16:19:13,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:13,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411435379] [2023-12-24 16:19:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:13,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:13,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:13,799 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 16:19:13,835 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 16:19:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:14,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:19:14,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:14,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:19:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:19:14,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:15,040 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:19:15,041 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 16:19:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:19:15,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:15,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411435379] [2023-12-24 16:19:15,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411435379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:19:15,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:19:15,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-24 16:19:15,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192161718] [2023-12-24 16:19:15,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:19:15,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:19:15,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:15,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:19:15,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:19:15,168 INFO L87 Difference]: Start difference. First operand 183 states and 255 transitions. Second operand has 13 states, 11 states have (on average 10.0) internal successors, (110), 13 states have internal predecessors, (110), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 16:19:15,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:15,997 INFO L93 Difference]: Finished difference Result 379 states and 525 transitions. [2023-12-24 16:19:15,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:19:15,998 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.0) internal successors, (110), 13 states have internal predecessors, (110), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) Word has length 131 [2023-12-24 16:19:15,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:16,000 INFO L225 Difference]: With dead ends: 379 [2023-12-24 16:19:16,000 INFO L226 Difference]: Without dead ends: 197 [2023-12-24 16:19:16,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:19:16,002 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 354 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:16,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 545 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:19:16,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-24 16:19:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 183. [2023-12-24 16:19:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 163 states have (on average 1.3558282208588956) internal successors, (221), 164 states have internal predecessors, (221), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:19:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 253 transitions. [2023-12-24 16:19:16,013 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 253 transitions. Word has length 131 [2023-12-24 16:19:16,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:16,014 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 253 transitions. [2023-12-24 16:19:16,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.0) internal successors, (110), 13 states have internal predecessors, (110), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 16:19:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 253 transitions. [2023-12-24 16:19:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 16:19:16,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:16,016 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:16,027 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 16:19:16,227 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 16:19:16,227 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:16,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:16,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2106609122, now seen corresponding path program 1 times [2023-12-24 16:19:16,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:16,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624078971] [2023-12-24 16:19:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:16,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:16,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:16,230 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 16:19:16,230 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 16:19:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:16,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:19:16,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:16,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:19:16,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 16:19:16,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 16:19:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:19:17,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:19:17,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:17,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624078971] [2023-12-24 16:19:17,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624078971] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:17,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:19:17,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-24 16:19:17,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904920485] [2023-12-24 16:19:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:17,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 16:19:17,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:17,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 16:19:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:19:17,098 INFO L87 Difference]: Start difference. First operand 183 states and 253 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:19:17,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:17,131 INFO L93 Difference]: Finished difference Result 365 states and 505 transitions. [2023-12-24 16:19:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 16:19:17,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 131 [2023-12-24 16:19:17,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:17,133 INFO L225 Difference]: With dead ends: 365 [2023-12-24 16:19:17,133 INFO L226 Difference]: Without dead ends: 183 [2023-12-24 16:19:17,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:19:17,134 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 1 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:17,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 289 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:19:17,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-24 16:19:17,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-12-24 16:19:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 163 states have (on average 1.343558282208589) internal successors, (219), 164 states have internal predecessors, (219), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:19:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 251 transitions. [2023-12-24 16:19:17,143 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 251 transitions. Word has length 131 [2023-12-24 16:19:17,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:17,144 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 251 transitions. [2023-12-24 16:19:17,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:19:17,144 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 251 transitions. [2023-12-24 16:19:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 16:19:17,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:17,145 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:17,160 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 16:19:17,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:17,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:17,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:17,359 INFO L85 PathProgramCache]: Analyzing trace with hash 499414432, now seen corresponding path program 1 times [2023-12-24 16:19:17,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:17,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739155861] [2023-12-24 16:19:17,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:17,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:17,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:17,361 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:19:17,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 16:19:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:34,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 16:19:34,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:39,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:19:39,610 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 16:19:47,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 71 [2023-12-24 16:19:47,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 59 [2023-12-24 16:19:47,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 51 [2023-12-24 16:19:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 238 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 16:19:50,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:20:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:20:06,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:20:06,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739155861] [2023-12-24 16:20:06,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739155861] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:20:06,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:20:06,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [27] total 31 [2023-12-24 16:20:06,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705085040] [2023-12-24 16:20:06,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:20:06,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:20:06,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:20:06,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:20:06,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:20:06,448 INFO L87 Difference]: Start difference. First operand 183 states and 251 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:20:21,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:20:21,930 INFO L93 Difference]: Finished difference Result 393 states and 538 transitions. [2023-12-24 16:20:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:20:21,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 131 [2023-12-24 16:20:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:20:21,942 INFO L225 Difference]: With dead ends: 393 [2023-12-24 16:20:21,942 INFO L226 Difference]: Without dead ends: 211 [2023-12-24 16:20:21,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:20:21,944 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 167 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:20:21,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 411 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-12-24 16:20:21,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-24 16:20:21,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 177. [2023-12-24 16:20:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 157 states have (on average 1.3375796178343948) internal successors, (210), 158 states have internal predecessors, (210), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:20:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 242 transitions. [2023-12-24 16:20:21,952 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 242 transitions. Word has length 131 [2023-12-24 16:20:21,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:20:21,953 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 242 transitions. [2023-12-24 16:20:21,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:20:21,953 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 242 transitions. [2023-12-24 16:20:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 16:20:21,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:20:21,954 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:21,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 16:20:22,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:20:22,171 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:20:22,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:20:22,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1140613558, now seen corresponding path program 1 times [2023-12-24 16:20:22,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:20:22,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618420142] [2023-12-24 16:20:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:22,173 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 16:20:22,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:20:22,174 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 16:20:22,180 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 16:20:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:34,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-24 16:20:34,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:42,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 43 [2023-12-24 16:20:42,330 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 16:20:57,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 81 [2023-12-24 16:20:57,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 69 [2023-12-24 16:20:57,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 50 [2023-12-24 16:21:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 238 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 16:21:01,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:21:20,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:20,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618420142] [2023-12-24 16:21:20,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618420142] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:20,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:20,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [30] total 34 [2023-12-24 16:21:20,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904886748] [2023-12-24 16:21:20,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:20,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:21:20,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:21:20,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 16:21:20,602 INFO L87 Difference]: Start difference. First operand 177 states and 242 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:21:22,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:21:36,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:36,377 INFO L93 Difference]: Finished difference Result 355 states and 484 transitions. [2023-12-24 16:21:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:21:36,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 131 [2023-12-24 16:21:36,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:36,393 INFO L225 Difference]: With dead ends: 355 [2023-12-24 16:21:36,393 INFO L226 Difference]: Without dead ends: 179 [2023-12-24 16:21:36,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 16:21:36,394 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 153 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:36,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 454 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-12-24 16:21:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-24 16:21:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2023-12-24 16:21:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 157 states have (on average 1.3312101910828025) internal successors, (209), 158 states have internal predecessors, (209), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:21:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 241 transitions. [2023-12-24 16:21:36,402 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 241 transitions. Word has length 131 [2023-12-24 16:21:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:36,403 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 241 transitions. [2023-12-24 16:21:36,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:21:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 241 transitions. [2023-12-24 16:21:36,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:21:36,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:36,404 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:36,422 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 16:21:36,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:36,622 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:36,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:36,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1433174596, now seen corresponding path program 1 times [2023-12-24 16:21:36,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:36,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158188627] [2023-12-24 16:21:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:36,623 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 16:21:36,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:36,625 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:21:36,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 16:21:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:37,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:21:37,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:37,944 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 16:21:38,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:21:38,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2023-12-24 16:21:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 16:21:38,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:38,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:38,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158188627] [2023-12-24 16:21:38,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158188627] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:38,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2068214870] [2023-12-24 16:21:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:38,740 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:21:38,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:21:38,778 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:21:38,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-24 16:21:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:40,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 16:21:40,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:42,303 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 16:21:43,187 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 16:21:45,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2023-12-24 16:21:45,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 37 [2023-12-24 16:21:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:21:45,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:21:46,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2068214870] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:46,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:21:46,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 13] total 29 [2023-12-24 16:21:46,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764552584] [2023-12-24 16:21:46,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:46,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:21:46,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:46,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:21:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 16:21:46,335 INFO L87 Difference]: Start difference. First operand 177 states and 241 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:21:46,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:46,836 INFO L93 Difference]: Finished difference Result 506 states and 685 transitions. [2023-12-24 16:21:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:21:46,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:21:46,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:46,839 INFO L225 Difference]: With dead ends: 506 [2023-12-24 16:21:46,840 INFO L226 Difference]: Without dead ends: 330 [2023-12-24 16:21:46,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 395 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 16:21:46,841 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 112 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:46,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 523 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:21:46,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-24 16:21:46,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 326. [2023-12-24 16:21:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 293 states have (on average 1.3276450511945392) internal successors, (389), 296 states have internal predecessors, (389), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:21:46,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 441 transitions. [2023-12-24 16:21:46,855 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 441 transitions. Word has length 133 [2023-12-24 16:21:46,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:46,855 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 441 transitions. [2023-12-24 16:21:46,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:21:46,856 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 441 transitions. [2023-12-24 16:21:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:21:46,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:46,857 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:46,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-24 16:21:47,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:47,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:47,270 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:47,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:47,271 INFO L85 PathProgramCache]: Analyzing trace with hash -938564666, now seen corresponding path program 1 times [2023-12-24 16:21:47,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:47,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21870987] [2023-12-24 16:21:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:47,271 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 16:21:47,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:47,273 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 16:21:47,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 16:21:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:47,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:21:47,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:48,705 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 16:21:48,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:21:48,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2023-12-24 16:21:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 16:21:49,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:49,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:49,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21870987] [2023-12-24 16:21:49,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21870987] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:49,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1367570176] [2023-12-24 16:21:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:49,550 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:21:49,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:21:49,553 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:21:49,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-24 16:21:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:51,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-24 16:21:51,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:51,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 16:21:53,790 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 16:21:54,919 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 16:21:56,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:21:57,061 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 16:21:57,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:21:57,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 52 [2023-12-24 16:21:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:21:58,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:21:58,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1367570176] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:58,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:21:58,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13, 18] total 34 [2023-12-24 16:21:58,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122914153] [2023-12-24 16:21:58,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:58,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:21:58,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:58,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:21:58,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 16:21:58,403 INFO L87 Difference]: Start difference. First operand 326 states and 441 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:21:59,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:59,619 INFO L93 Difference]: Finished difference Result 744 states and 1004 transitions. [2023-12-24 16:21:59,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:21:59,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:21:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:59,625 INFO L225 Difference]: With dead ends: 744 [2023-12-24 16:21:59,625 INFO L226 Difference]: Without dead ends: 419 [2023-12-24 16:21:59,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 394 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=210, Invalid=1512, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 16:21:59,626 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 347 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:59,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1265 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:21:59,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-12-24 16:21:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 334. [2023-12-24 16:21:59,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 301 states have (on average 1.318936877076412) internal successors, (397), 304 states have internal predecessors, (397), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:21:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 449 transitions. [2023-12-24 16:21:59,642 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 449 transitions. Word has length 133 [2023-12-24 16:21:59,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:59,642 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 449 transitions. [2023-12-24 16:21:59,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:21:59,642 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 449 transitions. [2023-12-24 16:21:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:21:59,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:59,643 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:59,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:59,872 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 (14)] Ended with exit code 0 [2023-12-24 16:22:00,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:22:00,064 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:00,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:00,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1949681916, now seen corresponding path program 1 times [2023-12-24 16:22:00,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:00,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580670572] [2023-12-24 16:22:00,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:00,065 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 16:22:00,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:00,066 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 16:22:00,068 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 16:22:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:00,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 16:22:00,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:03,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2023-12-24 16:22:03,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 37 [2023-12-24 16:22:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:22:03,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:22:04,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:04,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580670572] [2023-12-24 16:22:04,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580670572] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:04,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:04,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 19 [2023-12-24 16:22:04,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830045981] [2023-12-24 16:22:04,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:04,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:22:04,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:04,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:22:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:22:04,507 INFO L87 Difference]: Start difference. First operand 334 states and 449 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:05,227 INFO L93 Difference]: Finished difference Result 718 states and 966 transitions. [2023-12-24 16:22:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:22:05,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:22:05,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:05,232 INFO L225 Difference]: With dead ends: 718 [2023-12-24 16:22:05,232 INFO L226 Difference]: Without dead ends: 385 [2023-12-24 16:22:05,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:22:05,236 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 398 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:05,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 540 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:22:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-24 16:22:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 324. [2023-12-24 16:22:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 291 states have (on average 1.3161512027491409) internal successors, (383), 294 states have internal predecessors, (383), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:22:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 435 transitions. [2023-12-24 16:22:05,259 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 435 transitions. Word has length 133 [2023-12-24 16:22:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:05,262 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 435 transitions. [2023-12-24 16:22:05,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 435 transitions. [2023-12-24 16:22:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:22:05,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:05,264 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:05,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 16:22:05,478 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 16:22:05,479 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:05,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1223101149, now seen corresponding path program 1 times [2023-12-24 16:22:05,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:05,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480576965] [2023-12-24 16:22:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:05,481 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 16:22:05,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:05,482 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 16:22:05,520 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 16:22:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:05,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:22:05,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:06,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-24 16:22:06,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:22:06,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2023-12-24 16:22:06,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-24 16:22:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-24 16:22:06,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:22:06,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:06,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480576965] [2023-12-24 16:22:06,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480576965] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:06,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:06,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 14 [2023-12-24 16:22:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759066163] [2023-12-24 16:22:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:06,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:22:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:06,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:22:06,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:22:06,808 INFO L87 Difference]: Start difference. First operand 324 states and 435 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:08,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:08,063 INFO L93 Difference]: Finished difference Result 843 states and 1130 transitions. [2023-12-24 16:22:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:22:08,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:22:08,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:08,067 INFO L225 Difference]: With dead ends: 843 [2023-12-24 16:22:08,067 INFO L226 Difference]: Without dead ends: 520 [2023-12-24 16:22:08,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:22:08,069 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 250 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:08,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1154 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 16:22:08,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-12-24 16:22:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 364. [2023-12-24 16:22:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 331 states have (on average 1.3141993957703928) internal successors, (435), 334 states have internal predecessors, (435), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:22:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 487 transitions. [2023-12-24 16:22:08,095 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 487 transitions. Word has length 133 [2023-12-24 16:22:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:08,096 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 487 transitions. [2023-12-24 16:22:08,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 487 transitions. [2023-12-24 16:22:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:22:08,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:08,097 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:08,108 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 16:22:08,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:08,305 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:08,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:08,305 INFO L85 PathProgramCache]: Analyzing trace with hash -56762529, now seen corresponding path program 1 times [2023-12-24 16:22:08,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:08,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610613577] [2023-12-24 16:22:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:08,306 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 16:22:08,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:08,307 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:22:08,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 16:22:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:08,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 16:22:08,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:10,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2023-12-24 16:22:10,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47 [2023-12-24 16:22:10,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-12-24 16:22:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 206 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:22:10,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:22:11,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:11,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610613577] [2023-12-24 16:22:11,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610613577] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:11,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:11,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 25 [2023-12-24 16:22:11,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801038675] [2023-12-24 16:22:11,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:11,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:22:11,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:11,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:22:11,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:22:11,200 INFO L87 Difference]: Start difference. First operand 364 states and 487 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:12,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:12,763 INFO L93 Difference]: Finished difference Result 1087 states and 1450 transitions. [2023-12-24 16:22:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:22:12,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:22:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:12,767 INFO L225 Difference]: With dead ends: 1087 [2023-12-24 16:22:12,768 INFO L226 Difference]: Without dead ends: 724 [2023-12-24 16:22:12,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:22:12,769 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 570 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:12,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 806 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 16:22:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2023-12-24 16:22:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 376. [2023-12-24 16:22:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 343 states have (on average 1.3090379008746356) internal successors, (449), 346 states have internal predecessors, (449), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 16:22:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 501 transitions. [2023-12-24 16:22:12,790 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 501 transitions. Word has length 133 [2023-12-24 16:22:12,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:12,790 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 501 transitions. [2023-12-24 16:22:12,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 501 transitions. [2023-12-24 16:22:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:22:12,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:12,792 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:12,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 16:22:13,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:13,003 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:13,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash 365939297, now seen corresponding path program 1 times [2023-12-24 16:22:13,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:13,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976099967] [2023-12-24 16:22:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:13,004 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 16:22:13,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:13,006 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 16:22:13,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 16:22:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:13,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 16:22:13,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:14,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-24 16:22:15,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 59 [2023-12-24 16:22:15,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 54 [2023-12-24 16:22:15,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:22:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 206 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:22:15,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:22:16,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:16,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976099967] [2023-12-24 16:22:16,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976099967] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:16,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:16,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 30 [2023-12-24 16:22:16,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134632730] [2023-12-24 16:22:16,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:16,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:22:16,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:16,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:22:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2023-12-24 16:22:16,441 INFO L87 Difference]: Start difference. First operand 376 states and 501 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:20,074 INFO L93 Difference]: Finished difference Result 1346 states and 1790 transitions. [2023-12-24 16:22:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 16:22:20,075 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:22:20,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:20,079 INFO L225 Difference]: With dead ends: 1346 [2023-12-24 16:22:20,079 INFO L226 Difference]: Without dead ends: 971 [2023-12-24 16:22:20,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=250, Invalid=1472, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 16:22:20,081 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 491 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:20,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1764 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 16:22:20,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-12-24 16:22:20,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 296. [2023-12-24 16:22:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 267 states have (on average 1.299625468164794) internal successors, (347), 268 states have internal predecessors, (347), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-24 16:22:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 391 transitions. [2023-12-24 16:22:20,099 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 391 transitions. Word has length 133 [2023-12-24 16:22:20,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:20,099 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 391 transitions. [2023-12-24 16:22:20,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:20,100 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 391 transitions. [2023-12-24 16:22:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:22:20,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:20,101 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:20,114 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 16:22:20,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:20,312 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:20,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:20,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1089087643, now seen corresponding path program 1 times [2023-12-24 16:22:20,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:20,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885493643] [2023-12-24 16:22:20,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:20,313 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 16:22:20,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:20,314 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:22:20,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 16:22:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:20,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 16:22:20,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:22,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2023-12-24 16:22:22,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 48 [2023-12-24 16:22:22,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 16:22:22,428 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 206 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:22:22,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:22:23,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:23,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885493643] [2023-12-24 16:22:23,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885493643] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:23,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:23,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 25 [2023-12-24 16:22:23,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517230888] [2023-12-24 16:22:23,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:23,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:22:23,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:23,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:22:23,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:22:23,188 INFO L87 Difference]: Start difference. First operand 296 states and 391 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:24,907 INFO L93 Difference]: Finished difference Result 951 states and 1253 transitions. [2023-12-24 16:22:24,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:22:24,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:22:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:24,910 INFO L225 Difference]: With dead ends: 951 [2023-12-24 16:22:24,910 INFO L226 Difference]: Without dead ends: 656 [2023-12-24 16:22:24,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:22:24,911 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 346 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:24,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 859 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 16:22:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-12-24 16:22:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 302. [2023-12-24 16:22:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 273 states have (on average 1.293040293040293) internal successors, (353), 274 states have internal predecessors, (353), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-24 16:22:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 397 transitions. [2023-12-24 16:22:24,927 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 397 transitions. Word has length 133 [2023-12-24 16:22:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:24,928 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 397 transitions. [2023-12-24 16:22:24,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 397 transitions. [2023-12-24 16:22:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:22:24,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:24,929 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:24,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 16:22:25,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:25,141 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:25,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash -190776035, now seen corresponding path program 1 times [2023-12-24 16:22:25,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:25,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167670312] [2023-12-24 16:22:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:25,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:25,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:25,143 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 16:22:25,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 16:22:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:25,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:22:25,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:25,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 16:22:25,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:22:25,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 16:22:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 16:22:25,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:22:26,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:26,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167670312] [2023-12-24 16:22:26,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167670312] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:26,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:26,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2023-12-24 16:22:26,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574347738] [2023-12-24 16:22:26,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:26,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:22:26,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:26,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:22:26,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:22:26,005 INFO L87 Difference]: Start difference. First operand 302 states and 397 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:26,698 INFO L93 Difference]: Finished difference Result 811 states and 1060 transitions. [2023-12-24 16:22:26,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:22:26,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:22:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:26,700 INFO L225 Difference]: With dead ends: 811 [2023-12-24 16:22:26,700 INFO L226 Difference]: Without dead ends: 510 [2023-12-24 16:22:26,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:22:26,702 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 262 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:26,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1366 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:22:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-12-24 16:22:26,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 440. [2023-12-24 16:22:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 393 states have (on average 1.2798982188295165) internal successors, (503), 396 states have internal predecessors, (503), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 16:22:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 571 transitions. [2023-12-24 16:22:26,726 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 571 transitions. Word has length 133 [2023-12-24 16:22:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:26,726 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 571 transitions. [2023-12-24 16:22:26,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 571 transitions. [2023-12-24 16:22:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:22:26,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:26,727 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:26,740 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 16:22:26,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:26,939 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:26,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:26,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1511789469, now seen corresponding path program 1 times [2023-12-24 16:22:26,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:26,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404239685] [2023-12-24 16:22:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:26,941 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 16:22:26,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:26,942 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:22:26,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 16:22:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:27,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 16:22:27,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:28,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 16:22:29,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 63 [2023-12-24 16:22:29,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:22:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 206 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 16:22:29,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:22:30,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:30,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404239685] [2023-12-24 16:22:30,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404239685] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:30,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:30,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 30 [2023-12-24 16:22:30,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997367970] [2023-12-24 16:22:30,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:30,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:22:30,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:30,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:22:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2023-12-24 16:22:30,530 INFO L87 Difference]: Start difference. First operand 440 states and 571 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:34,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:34,180 INFO L93 Difference]: Finished difference Result 1438 states and 1886 transitions. [2023-12-24 16:22:34,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 16:22:34,182 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:22:34,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:34,184 INFO L225 Difference]: With dead ends: 1438 [2023-12-24 16:22:34,184 INFO L226 Difference]: Without dead ends: 999 [2023-12-24 16:22:34,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=250, Invalid=1472, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 16:22:34,194 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 662 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:34,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1761 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 16:22:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2023-12-24 16:22:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 446. [2023-12-24 16:22:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 399 states have (on average 1.280701754385965) internal successors, (511), 402 states have internal predecessors, (511), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 16:22:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 579 transitions. [2023-12-24 16:22:34,221 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 579 transitions. Word has length 133 [2023-12-24 16:22:34,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:34,221 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 579 transitions. [2023-12-24 16:22:34,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:34,222 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 579 transitions. [2023-12-24 16:22:34,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:22:34,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:34,223 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:34,235 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 (22)] Ended with exit code 0 [2023-12-24 16:22:34,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:34,434 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:34,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:34,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1455806850, now seen corresponding path program 1 times [2023-12-24 16:22:34,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:34,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677683445] [2023-12-24 16:22:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:34,435 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 16:22:34,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:34,436 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 16:22:34,437 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 16:22:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:34,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:22:34,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:36,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:22:36,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2023-12-24 16:22:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:22:36,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:22:36,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677683445] [2023-12-24 16:22:36,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677683445] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:36,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:36,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 16:22:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127375467] [2023-12-24 16:22:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:36,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:22:36,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:36,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:22:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:22:36,425 INFO L87 Difference]: Start difference. First operand 446 states and 579 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:36,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:36,852 INFO L93 Difference]: Finished difference Result 1166 states and 1515 transitions. [2023-12-24 16:22:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:22:36,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:22:36,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:36,855 INFO L225 Difference]: With dead ends: 1166 [2023-12-24 16:22:36,855 INFO L226 Difference]: Without dead ends: 721 [2023-12-24 16:22:36,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:22:36,856 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 170 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:36,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 757 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:22:36,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-12-24 16:22:36,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 528. [2023-12-24 16:22:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 481 states have (on average 1.2827442827442828) internal successors, (617), 484 states have internal predecessors, (617), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 16:22:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 685 transitions. [2023-12-24 16:22:36,884 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 685 transitions. Word has length 133 [2023-12-24 16:22:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:36,884 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 685 transitions. [2023-12-24 16:22:36,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:36,885 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 685 transitions. [2023-12-24 16:22:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:22:36,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:36,886 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:36,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-24 16:22:37,100 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 16:22:37,100 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:37,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:37,101 INFO L85 PathProgramCache]: Analyzing trace with hash 444689600, now seen corresponding path program 1 times [2023-12-24 16:22:37,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:37,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089784482] [2023-12-24 16:22:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:37,101 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 16:22:37,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:37,102 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 16:22:37,103 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 16:22:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:37,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:22:37,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:38,427 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 15 treesize of output 1 [2023-12-24 16:22:38,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:22:38,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2023-12-24 16:22:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:22:38,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:39,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:39,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089784482] [2023-12-24 16:22:39,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089784482] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:39,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1737560208] [2023-12-24 16:22:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:39,329 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:22:39,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:22:39,331 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 16:22:39,332 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 16:22:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:41,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-24 16:22:41,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:41,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 16:22:43,574 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 16:22:44,762 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 16:22:46,990 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 16:22:47,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 50 [2023-12-24 16:22:48,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:22:48,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 52 [2023-12-24 16:22:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:22:48,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:22:49,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1737560208] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:49,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:22:49,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 20] total 37 [2023-12-24 16:22:49,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276027902] [2023-12-24 16:22:49,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:49,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:22:49,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:49,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:22:49,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1334, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 16:22:49,274 INFO L87 Difference]: Start difference. First operand 528 states and 685 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:51,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:51,450 INFO L93 Difference]: Finished difference Result 1249 states and 1610 transitions. [2023-12-24 16:22:51,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 16:22:51,452 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:22:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:51,454 INFO L225 Difference]: With dead ends: 1249 [2023-12-24 16:22:51,454 INFO L226 Difference]: Without dead ends: 722 [2023-12-24 16:22:51,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 392 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=235, Invalid=2021, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 16:22:51,456 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 552 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:51,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1862 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 16:22:51,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-12-24 16:22:51,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 543. [2023-12-24 16:22:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 493 states have (on average 1.2778904665314401) internal successors, (630), 496 states have internal predecessors, (630), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:22:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 700 transitions. [2023-12-24 16:22:51,491 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 700 transitions. Word has length 133 [2023-12-24 16:22:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:51,492 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 700 transitions. [2023-12-24 16:22:51,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 700 transitions. [2023-12-24 16:22:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:22:51,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:51,493 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:51,508 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 16:22:51,720 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 16:22:51,905 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 16:22:51,905 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:51,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash -915932412, now seen corresponding path program 1 times [2023-12-24 16:22:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:51,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831413500] [2023-12-24 16:22:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:51,906 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 16:22:51,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:51,907 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 16:22:51,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 16:22:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:52,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 16:22:52,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:54,921 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 126 treesize of output 78 [2023-12-24 16:22:54,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 54 [2023-12-24 16:22:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:22:55,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:22:55,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:55,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831413500] [2023-12-24 16:22:55,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831413500] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:55,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:55,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 19 [2023-12-24 16:22:55,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156637758] [2023-12-24 16:22:55,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:55,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:22:55,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:55,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:22:55,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:22:55,675 INFO L87 Difference]: Start difference. First operand 543 states and 700 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:56,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:56,329 INFO L93 Difference]: Finished difference Result 1236 states and 1589 transitions. [2023-12-24 16:22:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:22:56,336 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-12-24 16:22:56,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:56,338 INFO L225 Difference]: With dead ends: 1236 [2023-12-24 16:22:56,338 INFO L226 Difference]: Without dead ends: 694 [2023-12-24 16:22:56,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:22:56,339 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 324 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:56,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 699 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:22:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2023-12-24 16:22:56,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 543. [2023-12-24 16:22:56,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 493 states have (on average 1.2738336713995944) internal successors, (628), 496 states have internal predecessors, (628), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:22:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 698 transitions. [2023-12-24 16:22:56,374 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 698 transitions. Word has length 133 [2023-12-24 16:22:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:56,375 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 698 transitions. [2023-12-24 16:22:56,375 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:22:56,375 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 698 transitions. [2023-12-24 16:22:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:22:56,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:56,377 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:56,390 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 16:22:56,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:56,588 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:56,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:56,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1927049662, now seen corresponding path program 1 times [2023-12-24 16:22:56,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:56,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522458552] [2023-12-24 16:22:56,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:56,589 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 16:22:56,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:56,590 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:22:56,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 16:22:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:57,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:22:57,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:57,834 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 16:22:58,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:22:58,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2023-12-24 16:22:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:22:58,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:58,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:58,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522458552] [2023-12-24 16:22:58,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522458552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:58,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [520329372] [2023-12-24 16:22:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:58,571 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:22:58,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:22:58,572 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:22:58,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-24 16:23:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:23:00,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 16:23:00,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:23:01,873 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 16:23:02,719 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 16:23:04,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:23:04,631 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 16:23:05,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:23:05,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 53 [2023-12-24 16:23:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:23:05,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:23:05,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [520329372] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:23:05,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:23:05,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 26 [2023-12-24 16:23:05,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418966488] [2023-12-24 16:23:05,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:23:05,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-24 16:23:05,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:23:05,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-24 16:23:05,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 16:23:05,841 INFO L87 Difference]: Start difference. First operand 543 states and 698 transitions. Second operand has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 26 states have internal predecessors, (128), 5 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 16:23:21,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:23:21,626 INFO L93 Difference]: Finished difference Result 3032 states and 3891 transitions. [2023-12-24 16:23:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-24 16:23:21,627 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 26 states have internal predecessors, (128), 5 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 133 [2023-12-24 16:23:21,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:23:21,632 INFO L225 Difference]: With dead ends: 3032 [2023-12-24 16:23:21,632 INFO L226 Difference]: Without dead ends: 2490 [2023-12-24 16:23:21,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 294 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1551 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=820, Invalid=5342, Unknown=0, NotChecked=0, Total=6162 [2023-12-24 16:23:21,635 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1284 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 184 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 4278 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:23:21,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 4278 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 3107 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2023-12-24 16:23:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2023-12-24 16:23:21,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 780. [2023-12-24 16:23:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 703 states have (on average 1.271692745376956) internal successors, (894), 708 states have internal predecessors, (894), 55 states have call successors, (55), 21 states have call predecessors, (55), 21 states have return successors, (55), 50 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-24 16:23:21,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1004 transitions. [2023-12-24 16:23:21,718 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1004 transitions. Word has length 133 [2023-12-24 16:23:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:23:21,719 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1004 transitions. [2023-12-24 16:23:21,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 26 states have internal predecessors, (128), 5 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-24 16:23:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1004 transitions. [2023-12-24 16:23:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:23:21,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:23:21,720 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:21,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-24 16:23:21,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2023-12-24 16:23:22,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:23:22,132 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:23:22,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:23:22,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1981442560, now seen corresponding path program 1 times [2023-12-24 16:23:22,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:23:22,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906951806] [2023-12-24 16:23:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:23:22,133 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 16:23:22,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:23:22,134 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 16:23:22,135 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 16:23:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:23:22,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:23:22,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:23:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:23:22,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:23:22,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:23:22,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906951806] [2023-12-24 16:23:22,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906951806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:23:22,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:23:22,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:23:22,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416316686] [2023-12-24 16:23:22,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:23:22,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:23:22,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:23:22,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:23:22,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:23:22,532 INFO L87 Difference]: Start difference. First operand 780 states and 1004 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 16:23:22,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:23:22,618 INFO L93 Difference]: Finished difference Result 1563 states and 2013 transitions. [2023-12-24 16:23:22,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:23:22,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2023-12-24 16:23:22,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:23:22,621 INFO L225 Difference]: With dead ends: 1563 [2023-12-24 16:23:22,621 INFO L226 Difference]: Without dead ends: 784 [2023-12-24 16:23:22,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 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 16:23:22,622 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 7 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:23:22,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 438 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:23:22,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2023-12-24 16:23:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 780. [2023-12-24 16:23:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 703 states have (on average 1.2702702702702702) internal successors, (893), 708 states have internal predecessors, (893), 55 states have call successors, (55), 21 states have call predecessors, (55), 21 states have return successors, (55), 50 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-24 16:23:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1003 transitions. [2023-12-24 16:23:22,710 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1003 transitions. Word has length 133 [2023-12-24 16:23:22,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:23:22,710 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1003 transitions. [2023-12-24 16:23:22,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 16:23:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1003 transitions. [2023-12-24 16:23:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:23:22,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:23:22,712 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:22,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 16:23:22,928 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 16:23:22,928 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:23:22,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:23:22,929 INFO L85 PathProgramCache]: Analyzing trace with hash -591744900, now seen corresponding path program 1 times [2023-12-24 16:23:22,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:23:22,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539885996] [2023-12-24 16:23:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:23:22,930 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 16:23:22,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:23:22,931 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 16:23:22,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 16:23:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:23:23,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:23:23,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:23:25,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-24 16:23:25,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:23:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 4 proven. 224 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 16:23:25,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:23:26,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:23:26,746 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 88 treesize of output 63 [2023-12-24 16:23:27,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:23:27,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539885996] [2023-12-24 16:23:27,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539885996] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:23:27,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [52675338] [2023-12-24 16:23:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:23:27,573 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:23:27,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:23:27,574 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:23:27,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-12-24 16:23:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:23:28,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 16:23:28,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:23:30,654 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 16:23:31,486 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 16:23:33,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:23:33,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-24 16:23:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 4 proven. 224 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 16:23:33,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:23:34,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 72 [2023-12-24 16:23:34,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [52675338] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:23:34,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:23:34,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-24 16:23:34,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911400996] [2023-12-24 16:23:34,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:23:34,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-24 16:23:34,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:23:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-24 16:23:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 16:23:34,678 INFO L87 Difference]: Start difference. First operand 780 states and 1003 transitions. Second operand has 27 states, 25 states have (on average 4.96) internal successors, (124), 24 states have internal predecessors, (124), 8 states have call successors, (28), 8 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 16:23:40,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:23:40,604 INFO L93 Difference]: Finished difference Result 2572 states and 3302 transitions. [2023-12-24 16:23:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 16:23:40,609 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 4.96) internal successors, (124), 24 states have internal predecessors, (124), 8 states have call successors, (28), 8 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) Word has length 135 [2023-12-24 16:23:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:23:40,614 INFO L225 Difference]: With dead ends: 2572 [2023-12-24 16:23:40,614 INFO L226 Difference]: Without dead ends: 1793 [2023-12-24 16:23:40,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 367 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=414, Invalid=2136, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 16:23:40,616 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 784 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:23:40,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 2111 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-24 16:23:40,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2023-12-24 16:23:40,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 848. [2023-12-24 16:23:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 748 states have (on average 1.2620320855614973) internal successors, (944), 757 states have internal predecessors, (944), 73 states have call successors, (73), 26 states have call predecessors, (73), 26 states have return successors, (73), 64 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 16:23:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1090 transitions. [2023-12-24 16:23:40,707 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1090 transitions. Word has length 135 [2023-12-24 16:23:40,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:23:40,707 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1090 transitions. [2023-12-24 16:23:40,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 4.96) internal successors, (124), 24 states have internal predecessors, (124), 8 states have call successors, (28), 8 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 16:23:40,708 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1090 transitions. [2023-12-24 16:23:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:23:40,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:23:40,709 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:40,724 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 16:23:40,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2023-12-24 16:23:41,122 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=3,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:23:41,122 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:23:41,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:23:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1009141506, now seen corresponding path program 1 times [2023-12-24 16:23:41,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:23:41,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372529803] [2023-12-24 16:23:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:23:41,123 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 16:23:41,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:23:41,124 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 16:23:41,125 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 16:23:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:23:41,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:23:41,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:23:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-12-24 16:23:41,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:23:41,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:23:41,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372529803] [2023-12-24 16:23:41,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372529803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:23:41,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:23:41,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:23:41,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607181021] [2023-12-24 16:23:41,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:23:41,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:23:41,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:23:41,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:23:41,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:23:41,560 INFO L87 Difference]: Start difference. First operand 848 states and 1090 transitions. Second operand has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-24 16:23:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:23:41,798 INFO L93 Difference]: Finished difference Result 1689 states and 2170 transitions. [2023-12-24 16:23:41,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:23:41,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2023-12-24 16:23:41,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:23:41,801 INFO L225 Difference]: With dead ends: 1689 [2023-12-24 16:23:41,801 INFO L226 Difference]: Without dead ends: 838 [2023-12-24 16:23:41,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:23:41,804 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 5 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:23:41,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 619 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:23:41,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2023-12-24 16:23:41,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 833. [2023-12-24 16:23:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 740 states have (on average 1.2621621621621621) internal successors, (934), 747 states have internal predecessors, (934), 67 states have call successors, (67), 25 states have call predecessors, (67), 25 states have return successors, (67), 60 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-24 16:23:41,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1068 transitions. [2023-12-24 16:23:41,890 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1068 transitions. Word has length 135 [2023-12-24 16:23:41,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:23:41,890 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1068 transitions. [2023-12-24 16:23:41,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-24 16:23:41,890 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1068 transitions. [2023-12-24 16:23:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:23:41,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:23:41,892 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:41,903 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 16:23:42,103 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 16:23:42,103 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:23:42,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:23:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash -222743221, now seen corresponding path program 1 times [2023-12-24 16:23:42,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:23:42,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604756255] [2023-12-24 16:23:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:23:42,104 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 16:23:42,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:23:42,105 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 16:23:42,106 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 16:23:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:23:42,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:23:42,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:23:43,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 61 [2023-12-24 16:23:43,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:23:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 16:23:44,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:23:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:23:44,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:23:44,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604756255] [2023-12-24 16:23:44,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604756255] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:23:44,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:23:44,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2023-12-24 16:23:44,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086641881] [2023-12-24 16:23:44,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:23:44,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:23:44,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:23:44,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:23:44,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:23:44,394 INFO L87 Difference]: Start difference. First operand 833 states and 1068 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:23:44,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:23:44,809 INFO L93 Difference]: Finished difference Result 1942 states and 2491 transitions. [2023-12-24 16:23:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:23:44,811 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2023-12-24 16:23:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:23:44,813 INFO L225 Difference]: With dead ends: 1942 [2023-12-24 16:23:44,813 INFO L226 Difference]: Without dead ends: 1110 [2023-12-24 16:23:44,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:23:44,815 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 149 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:23:44,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 574 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:23:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2023-12-24 16:23:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 917. [2023-12-24 16:23:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 824 states have (on average 1.2572815533980584) internal successors, (1036), 831 states have internal predecessors, (1036), 67 states have call successors, (67), 25 states have call predecessors, (67), 25 states have return successors, (67), 60 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-24 16:23:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1170 transitions. [2023-12-24 16:23:44,907 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1170 transitions. Word has length 135 [2023-12-24 16:23:44,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:23:44,908 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1170 transitions. [2023-12-24 16:23:44,908 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:23:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1170 transitions. [2023-12-24 16:23:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:23:44,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:23:44,909 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:44,923 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 16:23:45,123 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 16:23:45,124 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:23:45,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:23:45,125 INFO L85 PathProgramCache]: Analyzing trace with hash 478321357, now seen corresponding path program 1 times [2023-12-24 16:23:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:23:45,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33010930] [2023-12-24 16:23:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:23:45,126 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 16:23:45,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:23:45,128 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 16:23:45,164 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 16:23:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:23:45,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:23:45,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:23:46,551 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 16:23:46,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:23:46,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2023-12-24 16:23:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:23:46,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:23:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:23:47,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:23:47,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33010930] [2023-12-24 16:23:47,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33010930] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:23:47,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:23:47,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 20 [2023-12-24 16:23:47,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105596380] [2023-12-24 16:23:47,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:23:47,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:23:47,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:23:47,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:23:47,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:23:47,422 INFO L87 Difference]: Start difference. First operand 917 states and 1170 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:23:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:23:48,487 INFO L93 Difference]: Finished difference Result 2057 states and 2615 transitions. [2023-12-24 16:23:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:23:48,488 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2023-12-24 16:23:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:23:48,492 INFO L225 Difference]: With dead ends: 2057 [2023-12-24 16:23:48,492 INFO L226 Difference]: Without dead ends: 1141 [2023-12-24 16:23:48,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 248 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:23:48,494 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 348 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:23:48,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 1166 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:23:48,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2023-12-24 16:23:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 693. [2023-12-24 16:23:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 628 states have (on average 1.2547770700636942) internal successors, (788), 631 states have internal predecessors, (788), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 16:23:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 880 transitions. [2023-12-24 16:23:48,564 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 880 transitions. Word has length 135 [2023-12-24 16:23:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:23:48,564 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 880 transitions. [2023-12-24 16:23:48,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:23:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 880 transitions. [2023-12-24 16:23:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:23:48,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:23:48,566 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:48,581 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 16:23:48,777 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 16:23:48,778 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:23:48,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:23:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1272501769, now seen corresponding path program 1 times [2023-12-24 16:23:48,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:23:48,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152331073] [2023-12-24 16:23:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:23:48,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:23:48,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:23:48,781 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 16:23:48,817 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 16:23:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:23:49,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:23:49,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:23:49,641 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 21 treesize of output 13 [2023-12-24 16:23:49,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 16:23:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:23:49,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:23:49,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:23:50,307 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:23:50,307 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 16:23:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:23:50,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:23:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152331073] [2023-12-24 16:23:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152331073] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:23:50,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:23:50,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2023-12-24 16:23:50,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529879664] [2023-12-24 16:23:50,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:23:50,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 16:23:50,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:23:50,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 16:23:50,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:23:50,388 INFO L87 Difference]: Start difference. First operand 693 states and 880 transitions. Second operand has 18 states, 16 states have (on average 5.4375) internal successors, (87), 18 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:23:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:23:52,332 INFO L93 Difference]: Finished difference Result 1769 states and 2246 transitions. [2023-12-24 16:23:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 16:23:52,332 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 18 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 135 [2023-12-24 16:23:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:23:52,335 INFO L225 Difference]: With dead ends: 1769 [2023-12-24 16:23:52,335 INFO L226 Difference]: Without dead ends: 1077 [2023-12-24 16:23:52,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 16:23:52,336 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 828 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:23:52,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 972 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 16:23:52,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-12-24 16:23:52,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 733. [2023-12-24 16:23:52,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 668 states have (on average 1.2634730538922156) internal successors, (844), 671 states have internal predecessors, (844), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 16:23:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 936 transitions. [2023-12-24 16:23:52,404 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 936 transitions. Word has length 135 [2023-12-24 16:23:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:23:52,405 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 936 transitions. [2023-12-24 16:23:52,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 18 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:23:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 936 transitions. [2023-12-24 16:23:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:23:52,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:23:52,407 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:52,420 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 (35)] Ended with exit code 0 [2023-12-24 16:23:52,618 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 16:23:52,618 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:23:52,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:23:52,619 INFO L85 PathProgramCache]: Analyzing trace with hash -416441973, now seen corresponding path program 1 times [2023-12-24 16:23:52,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:23:52,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695864214] [2023-12-24 16:23:52,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:23:52,619 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 16:23:52,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:23:52,621 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 16:23:52,622 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 16:23:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:23:53,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 16:23:53,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:23:54,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2023-12-24 16:23:54,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2023-12-24 16:23:54,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-12-24 16:23:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 203 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:23:54,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:23:55,459 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:23:55,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:23:55,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695864214] [2023-12-24 16:23:55,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695864214] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:23:55,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:23:55,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2023-12-24 16:23:55,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469529001] [2023-12-24 16:23:55,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:23:55,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:23:55,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:23:55,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:23:55,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:23:55,461 INFO L87 Difference]: Start difference. First operand 733 states and 936 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:23:57,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:23:57,460 INFO L93 Difference]: Finished difference Result 1909 states and 2413 transitions. [2023-12-24 16:23:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:23:57,465 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2023-12-24 16:23:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:23:57,468 INFO L225 Difference]: With dead ends: 1909 [2023-12-24 16:23:57,469 INFO L226 Difference]: Without dead ends: 1177 [2023-12-24 16:23:57,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:23:57,471 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 378 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:23:57,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1223 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 16:23:57,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2023-12-24 16:23:57,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 737. [2023-12-24 16:23:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 672 states have (on average 1.2619047619047619) internal successors, (848), 675 states have internal predecessors, (848), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 16:23:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 940 transitions. [2023-12-24 16:23:57,547 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 940 transitions. Word has length 135 [2023-12-24 16:23:57,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:23:57,547 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 940 transitions. [2023-12-24 16:23:57,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:23:57,547 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 940 transitions. [2023-12-24 16:23:57,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:23:57,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:23:57,550 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:57,563 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 16:23:57,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:23:57,763 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:23:57,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:23:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash -532936565, now seen corresponding path program 1 times [2023-12-24 16:23:57,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:23:57,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921016227] [2023-12-24 16:23:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:23:57,765 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 16:23:57,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:23:57,766 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:23:57,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-24 16:23:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:23:58,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:23:58,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:23:58,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 16:23:58,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 16:23:58,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:23:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:23:58,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:23:58,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-24 16:23:59,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:23:59,561 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:23:59,561 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 16:23:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:23:59,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:23:59,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921016227] [2023-12-24 16:23:59,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921016227] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:23:59,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:23:59,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-12-24 16:23:59,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415789816] [2023-12-24 16:23:59,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:23:59,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 16:23:59,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:23:59,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 16:23:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:23:59,640 INFO L87 Difference]: Start difference. First operand 737 states and 940 transitions. Second operand has 22 states, 20 states have (on average 4.55) internal successors, (91), 22 states have internal predecessors, (91), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:24:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:24:03,120 INFO L93 Difference]: Finished difference Result 2500 states and 3138 transitions. [2023-12-24 16:24:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 16:24:03,121 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 4.55) internal successors, (91), 22 states have internal predecessors, (91), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 135 [2023-12-24 16:24:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:24:03,125 INFO L225 Difference]: With dead ends: 2500 [2023-12-24 16:24:03,125 INFO L226 Difference]: Without dead ends: 1764 [2023-12-24 16:24:03,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=407, Invalid=1573, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 16:24:03,127 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 704 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:24:03,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 2115 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 16:24:03,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-12-24 16:24:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1093. [2023-12-24 16:24:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1004 states have (on average 1.2390438247011952) internal successors, (1244), 1011 states have internal predecessors, (1244), 62 states have call successors, (62), 26 states have call predecessors, (62), 26 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 16:24:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1368 transitions. [2023-12-24 16:24:03,234 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1368 transitions. Word has length 135 [2023-12-24 16:24:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:24:03,234 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 1368 transitions. [2023-12-24 16:24:03,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 4.55) internal successors, (91), 22 states have internal predecessors, (91), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:24:03,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1368 transitions. [2023-12-24 16:24:03,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:24:03,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:24:03,236 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:03,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-24 16:24:03,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:24:03,447 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:24:03,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:24:03,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2073086989, now seen corresponding path program 1 times [2023-12-24 16:24:03,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:24:03,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404593356] [2023-12-24 16:24:03,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:24:03,448 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 16:24:03,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:24:03,449 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 16:24:03,451 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 16:24:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:24:03,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:24:03,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:24:04,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:24:04,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2023-12-24 16:24:04,712 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 37 treesize of output 25 [2023-12-24 16:24:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 203 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:24:04,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:24:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:24:05,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:24:05,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404593356] [2023-12-24 16:24:05,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404593356] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:24:05,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:24:05,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2023-12-24 16:24:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069835559] [2023-12-24 16:24:05,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:24:05,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:24:05,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:24:05,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:24:05,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:24:05,595 INFO L87 Difference]: Start difference. First operand 1093 states and 1368 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:24:07,404 INFO L93 Difference]: Finished difference Result 2906 states and 3623 transitions. [2023-12-24 16:24:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:24:07,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2023-12-24 16:24:07,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:24:07,409 INFO L225 Difference]: With dead ends: 2906 [2023-12-24 16:24:07,410 INFO L226 Difference]: Without dead ends: 1814 [2023-12-24 16:24:07,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:24:07,411 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 437 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:24:07,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1146 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 16:24:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2023-12-24 16:24:07,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1059. [2023-12-24 16:24:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 970 states have (on average 1.2391752577319588) internal successors, (1202), 977 states have internal predecessors, (1202), 62 states have call successors, (62), 26 states have call predecessors, (62), 26 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 16:24:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1326 transitions. [2023-12-24 16:24:07,518 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1326 transitions. Word has length 135 [2023-12-24 16:24:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:24:07,519 INFO L495 AbstractCegarLoop]: Abstraction has 1059 states and 1326 transitions. [2023-12-24 16:24:07,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1326 transitions. [2023-12-24 16:24:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:24:07,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:24:07,521 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:07,532 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 16:24:07,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:24:07,732 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:24:07,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:24:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash 925461319, now seen corresponding path program 1 times [2023-12-24 16:24:07,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:24:07,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068693324] [2023-12-24 16:24:07,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:24:07,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:24:07,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:24:07,734 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:24:07,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-24 16:24:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:24:08,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 16:24:08,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:24:08,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 16:24:09,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2023-12-24 16:24:09,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:24:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 203 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:24:09,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:24:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:24:10,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:24:10,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068693324] [2023-12-24 16:24:10,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068693324] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:24:10,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:24:10,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 28 [2023-12-24 16:24:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788884900] [2023-12-24 16:24:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:24:10,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 16:24:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:24:10,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 16:24:10,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:24:10,604 INFO L87 Difference]: Start difference. First operand 1059 states and 1326 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:15,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:24:15,080 INFO L93 Difference]: Finished difference Result 2950 states and 3680 transitions. [2023-12-24 16:24:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 16:24:15,081 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2023-12-24 16:24:15,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:24:15,086 INFO L225 Difference]: With dead ends: 2950 [2023-12-24 16:24:15,086 INFO L226 Difference]: Without dead ends: 1892 [2023-12-24 16:24:15,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=327, Invalid=1479, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 16:24:15,088 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 601 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:24:15,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1892 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-24 16:24:15,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2023-12-24 16:24:15,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1029. [2023-12-24 16:24:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 940 states have (on average 1.2382978723404254) internal successors, (1164), 947 states have internal predecessors, (1164), 62 states have call successors, (62), 26 states have call predecessors, (62), 26 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 16:24:15,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1288 transitions. [2023-12-24 16:24:15,174 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1288 transitions. Word has length 135 [2023-12-24 16:24:15,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:24:15,174 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1288 transitions. [2023-12-24 16:24:15,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:15,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1288 transitions. [2023-12-24 16:24:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:24:15,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:24:15,176 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:15,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-12-24 16:24:15,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:24:15,387 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:24:15,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:24:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash 808966727, now seen corresponding path program 1 times [2023-12-24 16:24:15,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:24:15,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377462507] [2023-12-24 16:24:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:24:15,388 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 16:24:15,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:24:15,389 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 16:24:15,391 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 16:24:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:24:15,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:24:15,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:24:16,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2023-12-24 16:24:16,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:24:16,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:24:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:24:16,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:24:17,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-24 16:24:17,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2023-12-24 16:24:17,472 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:24:17,473 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 16:24:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:24:17,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:24:17,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377462507] [2023-12-24 16:24:17,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377462507] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:24:17,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:24:17,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-12-24 16:24:17,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503049707] [2023-12-24 16:24:17,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:24:17,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 16:24:17,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:24:17,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 16:24:17,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:24:17,578 INFO L87 Difference]: Start difference. First operand 1029 states and 1288 transitions. Second operand has 22 states, 20 states have (on average 4.5) internal successors, (90), 22 states have internal predecessors, (90), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:24:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:24:25,945 INFO L93 Difference]: Finished difference Result 2211 states and 2765 transitions. [2023-12-24 16:24:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 16:24:25,947 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 4.5) internal successors, (90), 22 states have internal predecessors, (90), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 135 [2023-12-24 16:24:25,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:24:25,950 INFO L225 Difference]: With dead ends: 2211 [2023-12-24 16:24:25,950 INFO L226 Difference]: Without dead ends: 1183 [2023-12-24 16:24:25,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=476, Invalid=1780, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 16:24:25,952 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 751 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:24:25,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1839 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-24 16:24:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2023-12-24 16:24:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1013. [2023-12-24 16:24:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 924 states have (on average 1.2380952380952381) internal successors, (1144), 931 states have internal predecessors, (1144), 62 states have call successors, (62), 26 states have call predecessors, (62), 26 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 16:24:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1268 transitions. [2023-12-24 16:24:26,043 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1268 transitions. Word has length 135 [2023-12-24 16:24:26,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:24:26,043 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1268 transitions. [2023-12-24 16:24:26,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 4.5) internal successors, (90), 22 states have internal predecessors, (90), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:24:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1268 transitions. [2023-12-24 16:24:26,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:24:26,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:24:26,045 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:26,058 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 16:24:26,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 16:24:26,258 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:24:26,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:24:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash -879977015, now seen corresponding path program 1 times [2023-12-24 16:24:26,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:24:26,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567342719] [2023-12-24 16:24:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:24:26,259 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 16:24:26,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:24:26,260 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:24:26,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-24 16:24:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:24:26,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 16:24:26,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:24:27,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 16:24:27,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 62 [2023-12-24 16:24:27,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-24 16:24:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 203 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 16:24:28,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:24:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:24:28,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:24:28,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567342719] [2023-12-24 16:24:28,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567342719] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:24:28,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:24:28,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2023-12-24 16:24:28,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965617458] [2023-12-24 16:24:28,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:24:28,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:24:28,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:24:28,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:24:28,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-12-24 16:24:28,770 INFO L87 Difference]: Start difference. First operand 1013 states and 1268 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:24:31,246 INFO L93 Difference]: Finished difference Result 2204 states and 2749 transitions. [2023-12-24 16:24:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:24:31,247 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2023-12-24 16:24:31,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:24:31,250 INFO L225 Difference]: With dead ends: 2204 [2023-12-24 16:24:31,250 INFO L226 Difference]: Without dead ends: 1192 [2023-12-24 16:24:31,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:24:31,252 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 342 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:24:31,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1488 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 16:24:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2023-12-24 16:24:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 995. [2023-12-24 16:24:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 906 states have (on average 1.2339955849889626) internal successors, (1118), 913 states have internal predecessors, (1118), 62 states have call successors, (62), 26 states have call predecessors, (62), 26 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 16:24:31,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1242 transitions. [2023-12-24 16:24:31,325 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1242 transitions. Word has length 135 [2023-12-24 16:24:31,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:24:31,326 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1242 transitions. [2023-12-24 16:24:31,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:31,326 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1242 transitions. [2023-12-24 16:24:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:24:31,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:24:31,327 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:31,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-24 16:24:31,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:24:31,539 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:24:31,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:24:31,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1939711941, now seen corresponding path program 1 times [2023-12-24 16:24:31,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:24:31,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786151316] [2023-12-24 16:24:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:24:31,540 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 16:24:31,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:24:31,541 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 16:24:31,542 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 16:24:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:24:32,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:24:32,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:24:32,683 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 16:24:32,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:24:32,981 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 94 treesize of output 46 [2023-12-24 16:24:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 16:24:33,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:24:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:24:33,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:24:33,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786151316] [2023-12-24 16:24:33,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786151316] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:24:33,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:24:33,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2023-12-24 16:24:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642794580] [2023-12-24 16:24:33,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:24:33,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:24:33,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:24:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:24:33,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:24:33,439 INFO L87 Difference]: Start difference. First operand 995 states and 1242 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:34,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:24:34,546 INFO L93 Difference]: Finished difference Result 2295 states and 2896 transitions. [2023-12-24 16:24:34,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:24:34,546 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2023-12-24 16:24:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:24:34,550 INFO L225 Difference]: With dead ends: 2295 [2023-12-24 16:24:34,550 INFO L226 Difference]: Without dead ends: 1301 [2023-12-24 16:24:34,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:24:34,552 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 234 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:24:34,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1412 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:24:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2023-12-24 16:24:34,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 995. [2023-12-24 16:24:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 906 states have (on average 1.2339955849889626) internal successors, (1118), 913 states have internal predecessors, (1118), 62 states have call successors, (62), 26 states have call predecessors, (62), 26 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 16:24:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1242 transitions. [2023-12-24 16:24:34,643 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1242 transitions. Word has length 135 [2023-12-24 16:24:34,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:24:34,643 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1242 transitions. [2023-12-24 16:24:34,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:34,643 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1242 transitions. [2023-12-24 16:24:34,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:24:34,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:24:34,645 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:34,654 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 16:24:34,848 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 16:24:34,848 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:24:34,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:24:34,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1654190777, now seen corresponding path program 1 times [2023-12-24 16:24:34,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:24:34,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397227536] [2023-12-24 16:24:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:24:34,850 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 16:24:34,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:24:34,851 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:24:34,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-24 16:24:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:24:35,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:24:35,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:24:36,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:24:36,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2023-12-24 16:24:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:24:36,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:24:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:24:36,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:24:36,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397227536] [2023-12-24 16:24:36,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397227536] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:24:36,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:24:36,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-24 16:24:36,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338002031] [2023-12-24 16:24:36,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:24:36,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:24:36,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:24:36,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:24:36,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:24:36,930 INFO L87 Difference]: Start difference. First operand 995 states and 1242 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:37,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:24:37,359 INFO L93 Difference]: Finished difference Result 2192 states and 2745 transitions. [2023-12-24 16:24:37,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:24:37,360 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2023-12-24 16:24:37,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:24:37,363 INFO L225 Difference]: With dead ends: 2192 [2023-12-24 16:24:37,363 INFO L226 Difference]: Without dead ends: 1198 [2023-12-24 16:24:37,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:24:37,365 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 183 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:24:37,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 572 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:24:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2023-12-24 16:24:37,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 995. [2023-12-24 16:24:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 906 states have (on average 1.229580573951435) internal successors, (1114), 913 states have internal predecessors, (1114), 62 states have call successors, (62), 26 states have call predecessors, (62), 26 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 16:24:37,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1238 transitions. [2023-12-24 16:24:37,450 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1238 transitions. Word has length 135 [2023-12-24 16:24:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:24:37,450 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1238 transitions. [2023-12-24 16:24:37,450 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1238 transitions. [2023-12-24 16:24:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:24:37,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:24:37,452 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:37,464 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 (43)] Forceful destruction successful, exit code 0 [2023-12-24 16:24:37,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:24:37,664 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:24:37,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:24:37,664 INFO L85 PathProgramCache]: Analyzing trace with hash -267987383, now seen corresponding path program 1 times [2023-12-24 16:24:37,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:24:37,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424647708] [2023-12-24 16:24:37,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:24:37,665 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 16:24:37,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:24:37,666 INFO L229 MonitoredProcess]: Starting monitored process 44 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 16:24:37,667 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 (44)] Waiting until timeout for monitored process [2023-12-24 16:24:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:24:38,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 16:24:38,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:24:38,997 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 16:24:39,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:24:39,406 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 97 treesize of output 49 [2023-12-24 16:24:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:24:39,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:24:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:24:40,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:24:40,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424647708] [2023-12-24 16:24:40,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424647708] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:24:40,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:24:40,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 23 [2023-12-24 16:24:40,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604208673] [2023-12-24 16:24:40,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:24:40,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:24:40,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:24:40,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:24:40,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:24:40,285 INFO L87 Difference]: Start difference. First operand 995 states and 1238 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:24:42,727 INFO L93 Difference]: Finished difference Result 2482 states and 3156 transitions. [2023-12-24 16:24:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:24:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2023-12-24 16:24:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:24:42,731 INFO L225 Difference]: With dead ends: 2482 [2023-12-24 16:24:42,731 INFO L226 Difference]: Without dead ends: 1488 [2023-12-24 16:24:42,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:24:42,733 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 479 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:24:42,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 2127 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 16:24:42,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2023-12-24 16:24:42,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 742. [2023-12-24 16:24:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 686 states have (on average 1.215743440233236) internal successors, (834), 689 states have internal predecessors, (834), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 36 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 16:24:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 912 transitions. [2023-12-24 16:24:42,798 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 912 transitions. Word has length 135 [2023-12-24 16:24:42,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:24:42,798 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 912 transitions. [2023-12-24 16:24:42,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:24:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 912 transitions. [2023-12-24 16:24:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 16:24:42,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:24:42,800 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:42,809 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 (44)] Forceful destruction successful, exit code 0 [2023-12-24 16:24:43,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:24:43,000 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:24:43,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:24:43,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1142359550, now seen corresponding path program 1 times [2023-12-24 16:24:43,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:24:43,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938964842] [2023-12-24 16:24:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:24:43,001 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 16:24:43,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:24:43,002 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:24:43,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-24 16:24:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:24:43,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:24:43,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:24:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 16:24:43,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:24:43,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:24:43,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938964842] [2023-12-24 16:24:43,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938964842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:24:43,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:24:43,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:24:43,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049869759] [2023-12-24 16:24:43,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:24:43,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:24:43,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:24:43,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:24:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:24:43,434 INFO L87 Difference]: Start difference. First operand 742 states and 912 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 16:24:43,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:24:43,525 INFO L93 Difference]: Finished difference Result 1487 states and 1829 transitions. [2023-12-24 16:24:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:24:43,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2023-12-24 16:24:43,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:24:43,527 INFO L225 Difference]: With dead ends: 1487 [2023-12-24 16:24:43,527 INFO L226 Difference]: Without dead ends: 746 [2023-12-24 16:24:43,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 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 16:24:43,528 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 7 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:24:43,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 432 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:24:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-12-24 16:24:43,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 742. [2023-12-24 16:24:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 686 states have (on average 1.2142857142857142) internal successors, (833), 689 states have internal predecessors, (833), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 36 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 16:24:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 911 transitions. [2023-12-24 16:24:43,581 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 911 transitions. Word has length 135 [2023-12-24 16:24:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:24:43,581 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 911 transitions. [2023-12-24 16:24:43,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 16:24:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 911 transitions. [2023-12-24 16:24:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 16:24:43,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:24:43,582 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:43,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2023-12-24 16:24:43,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:24:43,783 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:24:43,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:24:43,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1491312192, now seen corresponding path program 1 times [2023-12-24 16:24:43,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:24:43,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938556773] [2023-12-24 16:24:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:24:43,784 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 16:24:43,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:24:43,785 INFO L229 MonitoredProcess]: Starting monitored process 46 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 16:24:43,792 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 (46)] Waiting until timeout for monitored process [2023-12-24 16:24:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:24:44,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:24:44,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:24:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-24 16:24:44,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:24:44,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:24:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938556773] [2023-12-24 16:24:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938556773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:24:44,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:24:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:24:44,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961653458] [2023-12-24 16:24:44,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:24:44,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:24:44,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:24:44,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:24:44,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:24:44,257 INFO L87 Difference]: Start difference. First operand 742 states and 911 transitions. Second operand has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-24 16:24:44,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:24:44,448 INFO L93 Difference]: Finished difference Result 1485 states and 1824 transitions. [2023-12-24 16:24:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:24:44,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 137 [2023-12-24 16:24:44,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:24:44,450 INFO L225 Difference]: With dead ends: 1485 [2023-12-24 16:24:44,450 INFO L226 Difference]: Without dead ends: 742 [2023-12-24 16:24:44,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:24:44,451 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 5 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:24:44,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 606 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:24:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-12-24 16:24:44,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2023-12-24 16:24:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 686 states have (on average 1.2128279883381925) internal successors, (832), 689 states have internal predecessors, (832), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 36 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 16:24:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 910 transitions. [2023-12-24 16:24:44,501 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 910 transitions. Word has length 137 [2023-12-24 16:24:44,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:24:44,502 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 910 transitions. [2023-12-24 16:24:44,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-24 16:24:44,502 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 910 transitions. [2023-12-24 16:24:44,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 16:24:44,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:24:44,503 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:44,516 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 (46)] Forceful destruction successful, exit code 0 [2023-12-24 16:24:44,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:24:44,715 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:24:44,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:24:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1916432258, now seen corresponding path program 1 times [2023-12-24 16:24:44,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:24:44,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532442273] [2023-12-24 16:24:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:24:44,718 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 16:24:44,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:24:44,719 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:24:44,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-12-24 16:24:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:24:45,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 16:24:45,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:24:46,220 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 16:24:46,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:24:46,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 47 [2023-12-24 16:24:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 4 proven. 192 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:24:46,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:24:47,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:24:47,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532442273] [2023-12-24 16:24:47,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532442273] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:24:47,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [858478459] [2023-12-24 16:24:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:24:47,010 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:24:47,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:24:47,011 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:24:47,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2023-12-24 16:24:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:24:49,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-24 16:24:49,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:24:49,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 16:24:51,180 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 16:24:52,662 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 16:24:54,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-24 16:24:55,106 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 16:24:55,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:24:55,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 52 [2023-12-24 16:24:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 4 proven. 224 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 16:24:56,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:24:56,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [858478459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:24:56,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:24:56,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 24] total 35 [2023-12-24 16:24:56,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498561882] [2023-12-24 16:24:56,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:24:56,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 16:24:56,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:24:56,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 16:24:56,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1613, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 16:24:56,362 INFO L87 Difference]: Start difference. First operand 742 states and 910 transitions. Second operand has 36 states, 33 states have (on average 4.303030303030303) internal successors, (142), 32 states have internal predecessors, (142), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) [2023-12-24 16:25:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:25:17,260 INFO L93 Difference]: Finished difference Result 3011 states and 3718 transitions. [2023-12-24 16:25:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-24 16:25:17,261 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 4.303030303030303) internal successors, (142), 32 states have internal predecessors, (142), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) Word has length 137 [2023-12-24 16:25:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:25:17,264 INFO L225 Difference]: With dead ends: 3011 [2023-12-24 16:25:17,264 INFO L226 Difference]: Without dead ends: 2270 [2023-12-24 16:25:17,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 293 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3353 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=1396, Invalid=9946, Unknown=0, NotChecked=0, Total=11342 [2023-12-24 16:25:17,267 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1251 mSDsluCounter, 4589 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 4836 SdHoareTripleChecker+Invalid, 3505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:25:17,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 4836 Invalid, 3505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-24 16:25:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2023-12-24 16:25:17,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 615. [2023-12-24 16:25:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 558 states have (on average 1.2132616487455197) internal successors, (677), 562 states have internal predecessors, (677), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 35 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 16:25:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 755 transitions. [2023-12-24 16:25:17,332 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 755 transitions. Word has length 137 [2023-12-24 16:25:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:25:17,333 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 755 transitions. [2023-12-24 16:25:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 4.303030303030303) internal successors, (142), 32 states have internal predecessors, (142), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) [2023-12-24 16:25:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 755 transitions. [2023-12-24 16:25:17,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 16:25:17,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:25:17,334 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:17,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2023-12-24 16:25:17,543 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 (47)] Forceful destruction successful, exit code 0 [2023-12-24 16:25:17,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:17,734 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:25:17,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:25:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1154165763, now seen corresponding path program 1 times [2023-12-24 16:25:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:25:17,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606025043] [2023-12-24 16:25:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:17,736 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 16:25:17,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:25:17,737 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:25:17,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-12-24 16:25:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:18,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:25:18,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:18,547 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 14 [2023-12-24 16:25:18,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:25:18,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 35 [2023-12-24 16:25:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 132 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-24 16:25:18,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:25:18,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:25:18,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606025043] [2023-12-24 16:25:18,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606025043] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:18,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:25:18,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 16:25:18,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072993337] [2023-12-24 16:25:18,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:25:18,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:25:18,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:25:18,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:25:18,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:25:18,873 INFO L87 Difference]: Start difference. First operand 615 states and 755 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:19,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:25:19,329 INFO L93 Difference]: Finished difference Result 1260 states and 1549 transitions. [2023-12-24 16:25:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:25:19,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 140 [2023-12-24 16:25:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:25:19,330 INFO L225 Difference]: With dead ends: 1260 [2023-12-24 16:25:19,330 INFO L226 Difference]: Without dead ends: 646 [2023-12-24 16:25:19,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:25:19,331 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 65 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:25:19,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 508 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:25:19,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2023-12-24 16:25:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 623. [2023-12-24 16:25:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 566 states have (on average 1.2102473498233215) internal successors, (685), 570 states have internal predecessors, (685), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 35 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 16:25:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 763 transitions. [2023-12-24 16:25:19,389 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 763 transitions. Word has length 140 [2023-12-24 16:25:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:25:19,389 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 763 transitions. [2023-12-24 16:25:19,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 763 transitions. [2023-12-24 16:25:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 16:25:19,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:25:19,390 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:19,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-12-24 16:25:19,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:19,600 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:25:19,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:25:19,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1154106181, now seen corresponding path program 1 times [2023-12-24 16:25:19,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:25:19,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140397834] [2023-12-24 16:25:19,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:19,601 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 16:25:19,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:25:19,602 INFO L229 MonitoredProcess]: Starting monitored process 50 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 16:25:19,603 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 (50)] Waiting until timeout for monitored process [2023-12-24 16:25:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:20,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:25:20,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:20,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:25:20,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 16:25:20,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 16:25:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:25:20,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:25:20,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:25:20,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140397834] [2023-12-24 16:25:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140397834] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:20,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:25:20,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-24 16:25:20,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310947253] [2023-12-24 16:25:20,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:25:20,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 16:25:20,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:25:20,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 16:25:20,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:25:20,636 INFO L87 Difference]: Start difference. First operand 623 states and 763 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:20,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:25:20,719 INFO L93 Difference]: Finished difference Result 1277 states and 1565 transitions. [2023-12-24 16:25:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 16:25:20,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 140 [2023-12-24 16:25:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:25:20,720 INFO L225 Difference]: With dead ends: 1277 [2023-12-24 16:25:20,720 INFO L226 Difference]: Without dead ends: 655 [2023-12-24 16:25:20,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:25:20,721 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 9 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:25:20,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 277 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:25:20,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-12-24 16:25:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 623. [2023-12-24 16:25:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 566 states have (on average 1.2031802120141342) internal successors, (681), 570 states have internal predecessors, (681), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 35 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 16:25:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 759 transitions. [2023-12-24 16:25:20,777 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 759 transitions. Word has length 140 [2023-12-24 16:25:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:25:20,777 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 759 transitions. [2023-12-24 16:25:20,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 759 transitions. [2023-12-24 16:25:20,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 16:25:20,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:25:20,779 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:20,788 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 (50)] Forceful destruction successful, exit code 0 [2023-12-24 16:25:20,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:20,980 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:25:20,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:25:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash 761079171, now seen corresponding path program 1 times [2023-12-24 16:25:20,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:25:20,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507003133] [2023-12-24 16:25:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:20,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:20,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:25:20,983 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:25:21,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-12-24 16:25:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:21,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:25:21,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:21,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-24 16:25:21,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:25:21,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 35 [2023-12-24 16:25:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:25:21,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:25:22,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:25:22,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507003133] [2023-12-24 16:25:22,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507003133] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:22,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:25:22,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 16:25:22,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627126813] [2023-12-24 16:25:22,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:25:22,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:25:22,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:25:22,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:25:22,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:25:22,076 INFO L87 Difference]: Start difference. First operand 623 states and 759 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:22,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:25:22,391 INFO L93 Difference]: Finished difference Result 664 states and 808 transitions. [2023-12-24 16:25:22,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:25:22,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 140 [2023-12-24 16:25:22,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:25:22,393 INFO L225 Difference]: With dead ends: 664 [2023-12-24 16:25:22,393 INFO L226 Difference]: Without dead ends: 662 [2023-12-24 16:25:22,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:25:22,393 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 66 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:25:22,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 516 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:25:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-12-24 16:25:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 483. [2023-12-24 16:25:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 431 states have (on average 1.2250580046403712) internal successors, (528), 434 states have internal predecessors, (528), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:25:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 598 transitions. [2023-12-24 16:25:22,455 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 598 transitions. Word has length 140 [2023-12-24 16:25:22,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:25:22,455 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 598 transitions. [2023-12-24 16:25:22,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 598 transitions. [2023-12-24 16:25:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 16:25:22,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:25:22,457 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:22,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2023-12-24 16:25:22,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:22,669 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:25:22,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:25:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash 818397055, now seen corresponding path program 1 times [2023-12-24 16:25:22,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:25:22,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933972944] [2023-12-24 16:25:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:22,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:22,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:25:22,671 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:25:22,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2023-12-24 16:25:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:23,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:25:23,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:23,609 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 14 [2023-12-24 16:25:23,747 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 33 treesize of output 29 [2023-12-24 16:25:23,911 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 61 treesize of output 45 [2023-12-24 16:25:23,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:25:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:25:24,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:25:24,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:25:24,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933972944] [2023-12-24 16:25:24,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933972944] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:24,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:25:24,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 22 [2023-12-24 16:25:24,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50404845] [2023-12-24 16:25:24,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:25:24,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:25:24,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:25:24,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:25:24,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:25:24,537 INFO L87 Difference]: Start difference. First operand 483 states and 598 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:25:25,361 INFO L93 Difference]: Finished difference Result 1140 states and 1393 transitions. [2023-12-24 16:25:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:25:25,361 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 140 [2023-12-24 16:25:25,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:25:25,362 INFO L225 Difference]: With dead ends: 1140 [2023-12-24 16:25:25,362 INFO L226 Difference]: Without dead ends: 680 [2023-12-24 16:25:25,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:25:25,363 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 111 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:25:25,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1324 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:25:25,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-12-24 16:25:25,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 586. [2023-12-24 16:25:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 534 states have (on average 1.1947565543071161) internal successors, (638), 537 states have internal predecessors, (638), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:25:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 708 transitions. [2023-12-24 16:25:25,426 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 708 transitions. Word has length 140 [2023-12-24 16:25:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:25:25,426 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 708 transitions. [2023-12-24 16:25:25,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 708 transitions. [2023-12-24 16:25:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:25:25,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:25:25,428 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:25,441 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 (52)] Forceful destruction successful, exit code 0 [2023-12-24 16:25:25,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:25,639 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:25:25,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:25:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2023101421, now seen corresponding path program 1 times [2023-12-24 16:25:25,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:25:25,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910685740] [2023-12-24 16:25:25,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:25,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:25,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:25:25,641 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:25:25,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2023-12-24 16:25:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:26,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:25:26,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:26,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 16:25:26,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 16:25:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:25:26,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:27,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 16:25:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:25:27,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:25:27,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910685740] [2023-12-24 16:25:27,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910685740] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:27,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:25:27,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2023-12-24 16:25:27,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099200583] [2023-12-24 16:25:27,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:25:27,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:25:27,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:25:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:25:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:25:27,232 INFO L87 Difference]: Start difference. First operand 586 states and 708 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:25:28,718 INFO L93 Difference]: Finished difference Result 1350 states and 1620 transitions. [2023-12-24 16:25:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:25:28,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 142 [2023-12-24 16:25:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:25:28,720 INFO L225 Difference]: With dead ends: 1350 [2023-12-24 16:25:28,720 INFO L226 Difference]: Without dead ends: 787 [2023-12-24 16:25:28,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:25:28,721 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 110 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:25:28,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1043 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 16:25:28,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-12-24 16:25:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 667. [2023-12-24 16:25:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 615 states have (on average 1.1723577235772358) internal successors, (721), 618 states have internal predecessors, (721), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:25:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 791 transitions. [2023-12-24 16:25:28,779 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 791 transitions. Word has length 142 [2023-12-24 16:25:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:25:28,780 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 791 transitions. [2023-12-24 16:25:28,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 791 transitions. [2023-12-24 16:25:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:25:28,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:25:28,781 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:28,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2023-12-24 16:25:28,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:28,981 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:25:28,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:25:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1764935983, now seen corresponding path program 1 times [2023-12-24 16:25:28,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:25:28,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825698936] [2023-12-24 16:25:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:28,982 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 16:25:28,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:25:28,983 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:25:28,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2023-12-24 16:25:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:29,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:25:29,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:29,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 27 [2023-12-24 16:25:29,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:25:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 162 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-24 16:25:30,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:25:30,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:25:30,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825698936] [2023-12-24 16:25:30,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825698936] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:30,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:25:30,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-12-24 16:25:30,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991827663] [2023-12-24 16:25:30,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:25:30,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:25:30,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:25:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:25:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:25:30,342 INFO L87 Difference]: Start difference. First operand 667 states and 791 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:31,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:25:31,124 INFO L93 Difference]: Finished difference Result 1625 states and 1930 transitions. [2023-12-24 16:25:31,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:25:31,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 142 [2023-12-24 16:25:31,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:25:31,125 INFO L225 Difference]: With dead ends: 1625 [2023-12-24 16:25:31,126 INFO L226 Difference]: Without dead ends: 981 [2023-12-24 16:25:31,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:25:31,127 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 345 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:25:31,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 522 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:25:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2023-12-24 16:25:31,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 667. [2023-12-24 16:25:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 615 states have (on average 1.1691056910569106) internal successors, (719), 618 states have internal predecessors, (719), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:25:31,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 789 transitions. [2023-12-24 16:25:31,180 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 789 transitions. Word has length 142 [2023-12-24 16:25:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:25:31,180 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 789 transitions. [2023-12-24 16:25:31,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 789 transitions. [2023-12-24 16:25:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:25:31,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:25:31,181 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:31,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Ended with exit code 0 [2023-12-24 16:25:31,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:31,382 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:25:31,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:25:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash 876528661, now seen corresponding path program 1 times [2023-12-24 16:25:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:25:31,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961726940] [2023-12-24 16:25:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:31,383 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 16:25:31,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:25:31,383 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:25:31,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2023-12-24 16:25:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:31,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:25:31,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:32,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:25:32,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 16:25:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:25:32,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:32,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:25:33,157 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:25:33,158 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 16:25:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 16:25:33,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:25:33,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961726940] [2023-12-24 16:25:33,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961726940] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:25:33,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:25:33,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2023-12-24 16:25:33,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501256255] [2023-12-24 16:25:33,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:25:33,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 16:25:33,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:25:33,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 16:25:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:25:33,276 INFO L87 Difference]: Start difference. First operand 667 states and 789 transitions. Second operand has 18 states, 16 states have (on average 5.875) internal successors, (94), 18 states have internal predecessors, (94), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:25:35,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:25:35,463 INFO L93 Difference]: Finished difference Result 1457 states and 1729 transitions. [2023-12-24 16:25:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 16:25:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.875) internal successors, (94), 18 states have internal predecessors, (94), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) Word has length 142 [2023-12-24 16:25:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:25:35,465 INFO L225 Difference]: With dead ends: 1457 [2023-12-24 16:25:35,465 INFO L226 Difference]: Without dead ends: 813 [2023-12-24 16:25:35,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 16:25:35,467 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 410 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:25:35,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 922 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 16:25:35,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2023-12-24 16:25:35,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 677. [2023-12-24 16:25:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 625 states have (on average 1.176) internal successors, (735), 628 states have internal predecessors, (735), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:25:35,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 805 transitions. [2023-12-24 16:25:35,537 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 805 transitions. Word has length 142 [2023-12-24 16:25:35,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:25:35,538 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 805 transitions. [2023-12-24 16:25:35,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.875) internal successors, (94), 18 states have internal predecessors, (94), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 2 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-24 16:25:35,538 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 805 transitions. [2023-12-24 16:25:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:25:35,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:25:35,539 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:35,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2023-12-24 16:25:35,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:35,751 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:25:35,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:25:35,752 INFO L85 PathProgramCache]: Analyzing trace with hash 483501651, now seen corresponding path program 1 times [2023-12-24 16:25:35,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:25:35,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882887308] [2023-12-24 16:25:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:35,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:35,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:25:35,754 INFO L229 MonitoredProcess]: Starting monitored process 56 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 16:25:35,788 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 (56)] Waiting until timeout for monitored process [2023-12-24 16:25:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:36,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:25:36,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:36,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-12-24 16:25:36,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:25:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:25:36,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:37,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:25:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:25:37,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:25:37,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882887308] [2023-12-24 16:25:37,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882887308] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:37,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:25:37,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-12-24 16:25:37,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598873748] [2023-12-24 16:25:37,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:25:37,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:25:37,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:25:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:25:37,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:25:37,215 INFO L87 Difference]: Start difference. First operand 677 states and 805 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:38,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:25:38,280 INFO L93 Difference]: Finished difference Result 1511 states and 1789 transitions. [2023-12-24 16:25:38,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:25:38,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 142 [2023-12-24 16:25:38,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:25:38,282 INFO L225 Difference]: With dead ends: 1511 [2023-12-24 16:25:38,282 INFO L226 Difference]: Without dead ends: 857 [2023-12-24 16:25:38,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:25:38,283 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 119 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:25:38,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 774 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:25:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-12-24 16:25:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 749. [2023-12-24 16:25:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 697 states have (on average 1.1606886657101865) internal successors, (809), 700 states have internal predecessors, (809), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:25:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 879 transitions. [2023-12-24 16:25:38,361 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 879 transitions. Word has length 142 [2023-12-24 16:25:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:25:38,361 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 879 transitions. [2023-12-24 16:25:38,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:38,362 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 879 transitions. [2023-12-24 16:25:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:25:38,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:25:38,363 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:38,373 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 (56)] Forceful destruction successful, exit code 0 [2023-12-24 16:25:38,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:38,568 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:25:38,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:25:38,569 INFO L85 PathProgramCache]: Analyzing trace with hash -134588589, now seen corresponding path program 1 times [2023-12-24 16:25:38,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:25:38,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922918324] [2023-12-24 16:25:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:38,569 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 16:25:38,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:25:38,570 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:25:38,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2023-12-24 16:25:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:39,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:25:39,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:39,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:25:39,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:25:39,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:25:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:25:40,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:40,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-24 16:25:40,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 16:25:40,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:25:40,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922918324] [2023-12-24 16:25:40,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922918324] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:40,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [934151073] [2023-12-24 16:25:40,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:40,966 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:25:40,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:25:40,967 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:25:40,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2023-12-24 16:25:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:42,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:25:42,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:42,441 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 16:25:43,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 16:25:44,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:25:44,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:25:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:25:44,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:44,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-24 16:25:44,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 16:25:45,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [934151073] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:45,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:25:45,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2023-12-24 16:25:45,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224544332] [2023-12-24 16:25:45,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:25:45,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-24 16:25:45,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:25:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-24 16:25:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:25:45,006 INFO L87 Difference]: Start difference. First operand 749 states and 879 transitions. Second operand has 21 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 4 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 16:25:51,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:25:51,139 INFO L93 Difference]: Finished difference Result 1647 states and 1938 transitions. [2023-12-24 16:25:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 16:25:51,140 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 4 states have call predecessors, (28), 6 states have call successors, (28) Word has length 142 [2023-12-24 16:25:51,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:25:51,141 INFO L225 Difference]: With dead ends: 1647 [2023-12-24 16:25:51,141 INFO L226 Difference]: Without dead ends: 921 [2023-12-24 16:25:51,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 336 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=432, Invalid=1824, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 16:25:51,142 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 890 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:25:51,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1215 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-24 16:25:51,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-12-24 16:25:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 749. [2023-12-24 16:25:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 697 states have (on average 1.1606886657101865) internal successors, (809), 700 states have internal predecessors, (809), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:25:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 879 transitions. [2023-12-24 16:25:51,201 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 879 transitions. Word has length 142 [2023-12-24 16:25:51,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:25:51,201 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 879 transitions. [2023-12-24 16:25:51,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 4 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 16:25:51,201 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 879 transitions. [2023-12-24 16:25:51,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:25:51,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:25:51,203 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:51,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (58)] Ended with exit code 0 [2023-12-24 16:25:51,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2023-12-24 16:25:51,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:51,603 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:25:51,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:25:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash -527615599, now seen corresponding path program 1 times [2023-12-24 16:25:51,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:25:51,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466727426] [2023-12-24 16:25:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:51,604 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 16:25:51,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:25:51,605 INFO L229 MonitoredProcess]: Starting monitored process 59 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 16:25:51,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2023-12-24 16:25:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:52,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:25:52,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:52,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:25:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 162 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-24 16:25:52,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:25:52,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:25:52,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466727426] [2023-12-24 16:25:52,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466727426] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:52,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:25:52,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-24 16:25:52,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021304497] [2023-12-24 16:25:52,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:25:52,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:25:52,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:25:52,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:25:52,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:25:52,818 INFO L87 Difference]: Start difference. First operand 749 states and 879 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:25:53,398 INFO L93 Difference]: Finished difference Result 1677 states and 1969 transitions. [2023-12-24 16:25:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:25:53,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 142 [2023-12-24 16:25:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:25:53,400 INFO L225 Difference]: With dead ends: 1677 [2023-12-24 16:25:53,400 INFO L226 Difference]: Without dead ends: 945 [2023-12-24 16:25:53,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:25:53,401 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 210 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:25:53,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 586 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:25:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2023-12-24 16:25:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 749. [2023-12-24 16:25:53,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 697 states have (on average 1.1606886657101865) internal successors, (809), 700 states have internal predecessors, (809), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:25:53,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 879 transitions. [2023-12-24 16:25:53,476 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 879 transitions. Word has length 142 [2023-12-24 16:25:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:25:53,476 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 879 transitions. [2023-12-24 16:25:53,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:25:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 879 transitions. [2023-12-24 16:25:53,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:25:53,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:25:53,477 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:53,486 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 (59)] Forceful destruction successful, exit code 0 [2023-12-24 16:25:53,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:25:53,678 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:25:53,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:25:53,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1238868717, now seen corresponding path program 1 times [2023-12-24 16:25:53,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:25:53,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708718797] [2023-12-24 16:25:53,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:53,679 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 16:25:53,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:25:53,680 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:25:53,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2023-12-24 16:25:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:54,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:25:54,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:54,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:25:54,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:25:54,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 16:25:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:25:54,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:54,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:25:55,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 16:25:55,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:25:55,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708718797] [2023-12-24 16:25:55,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708718797] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:55,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [425175626] [2023-12-24 16:25:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:25:55,404 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:25:55,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:25:55,408 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:25:55,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2023-12-24 16:25:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:25:56,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:25:56,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:25:56,945 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 16:25:57,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 16:25:57,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:25:57,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 16:25:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:25:58,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:25:58,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:25:58,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 16:25:58,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [425175626] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:25:58,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:25:58,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2023-12-24 16:25:58,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752419259] [2023-12-24 16:25:58,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:25:58,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 16:25:58,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:25:58,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 16:25:58,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:25:58,384 INFO L87 Difference]: Start difference. First operand 749 states and 879 transitions. Second operand has 19 states, 17 states have (on average 7.647058823529412) internal successors, (130), 17 states have internal predecessors, (130), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 4 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 16:26:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:26:02,455 INFO L93 Difference]: Finished difference Result 1682 states and 1969 transitions. [2023-12-24 16:26:02,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 16:26:02,455 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 7.647058823529412) internal successors, (130), 17 states have internal predecessors, (130), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 4 states have call predecessors, (28), 6 states have call successors, (28) Word has length 142 [2023-12-24 16:26:02,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:26:02,457 INFO L225 Difference]: With dead ends: 1682 [2023-12-24 16:26:02,457 INFO L226 Difference]: Without dead ends: 956 [2023-12-24 16:26:02,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 338 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=505, Invalid=2147, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 16:26:02,458 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 564 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:26:02,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1660 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 16:26:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-12-24 16:26:02,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 766. [2023-12-24 16:26:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 714 states have (on average 1.1526610644257702) internal successors, (823), 717 states have internal predecessors, (823), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:26:02,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 893 transitions. [2023-12-24 16:26:02,528 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 893 transitions. Word has length 142 [2023-12-24 16:26:02,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:26:02,528 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 893 transitions. [2023-12-24 16:26:02,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 7.647058823529412) internal successors, (130), 17 states have internal predecessors, (130), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 4 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 16:26:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 893 transitions. [2023-12-24 16:26:02,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:26:02,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:26:02,529 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:02,539 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 (60)] Forceful destruction successful, exit code 0 [2023-12-24 16:26:02,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2023-12-24 16:26:02,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:26:02,936 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:26:02,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:26:02,937 INFO L85 PathProgramCache]: Analyzing trace with hash -980703279, now seen corresponding path program 1 times [2023-12-24 16:26:02,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:26:02,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101533093] [2023-12-24 16:26:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:26:02,937 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 16:26:02,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:26:02,938 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:26:02,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2023-12-24 16:26:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:26:03,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:26:03,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:26:03,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 16:26:03,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 16:26:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:26:04,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:26:04,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:26:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:26:04,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:26:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101533093] [2023-12-24 16:26:04,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101533093] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:26:04,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:26:04,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-12-24 16:26:04,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752027483] [2023-12-24 16:26:04,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:26:04,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:26:04,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:26:04,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:26:04,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:26:04,403 INFO L87 Difference]: Start difference. First operand 766 states and 893 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:05,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:26:05,292 INFO L93 Difference]: Finished difference Result 1572 states and 1832 transitions. [2023-12-24 16:26:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:26:05,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 142 [2023-12-24 16:26:05,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:26:05,294 INFO L225 Difference]: With dead ends: 1572 [2023-12-24 16:26:05,294 INFO L226 Difference]: Without dead ends: 829 [2023-12-24 16:26:05,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:26:05,295 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 163 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:26:05,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 855 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:26:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-12-24 16:26:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 766. [2023-12-24 16:26:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 714 states have (on average 1.1512605042016806) internal successors, (822), 717 states have internal predecessors, (822), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:26:05,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 892 transitions. [2023-12-24 16:26:05,403 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 892 transitions. Word has length 142 [2023-12-24 16:26:05,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:26:05,403 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 892 transitions. [2023-12-24 16:26:05,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 892 transitions. [2023-12-24 16:26:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:26:05,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:26:05,405 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:05,420 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 (62)] Forceful destruction successful, exit code 0 [2023-12-24 16:26:05,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:26:05,618 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:26:05,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:26:05,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1748341807, now seen corresponding path program 1 times [2023-12-24 16:26:05,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:26:05,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826355769] [2023-12-24 16:26:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:26:05,619 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 16:26:05,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:26:05,620 INFO L229 MonitoredProcess]: Starting monitored process 63 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 16:26:05,621 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 (63)] Waiting until timeout for monitored process [2023-12-24 16:26:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:26:06,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:26:06,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:26:06,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2023-12-24 16:26:06,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:26:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 162 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-24 16:26:06,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:26:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:26:07,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:26:07,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826355769] [2023-12-24 16:26:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826355769] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:26:07,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:26:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-12-24 16:26:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068809615] [2023-12-24 16:26:07,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:26:07,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:26:07,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:26:07,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:26:07,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:26:07,071 INFO L87 Difference]: Start difference. First operand 766 states and 892 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:26:07,911 INFO L93 Difference]: Finished difference Result 1674 states and 1948 transitions. [2023-12-24 16:26:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:26:07,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 142 [2023-12-24 16:26:07,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:26:07,913 INFO L225 Difference]: With dead ends: 1674 [2023-12-24 16:26:07,913 INFO L226 Difference]: Without dead ends: 931 [2023-12-24 16:26:07,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:26:07,914 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 259 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:26:07,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 782 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:26:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-24 16:26:08,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 713. [2023-12-24 16:26:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 661 states have (on average 1.1603630862329803) internal successors, (767), 664 states have internal predecessors, (767), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:26:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 837 transitions. [2023-12-24 16:26:08,015 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 837 transitions. Word has length 142 [2023-12-24 16:26:08,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:26:08,015 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 837 transitions. [2023-12-24 16:26:08,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 837 transitions. [2023-12-24 16:26:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:26:08,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:26:08,016 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:08,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2023-12-24 16:26:08,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:26:08,231 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:26:08,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:26:08,232 INFO L85 PathProgramCache]: Analyzing trace with hash 758261265, now seen corresponding path program 1 times [2023-12-24 16:26:08,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:26:08,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635505654] [2023-12-24 16:26:08,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:26:08,232 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 16:26:08,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:26:08,234 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:26:08,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2023-12-24 16:26:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:26:08,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:26:08,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:26:09,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:26:09,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:26:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 199 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-24 16:26:09,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:26:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:26:10,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:26:10,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635505654] [2023-12-24 16:26:10,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635505654] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:26:10,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:26:10,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 20 [2023-12-24 16:26:10,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129945359] [2023-12-24 16:26:10,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:26:10,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:26:10,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:26:10,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:26:10,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:26:10,155 INFO L87 Difference]: Start difference. First operand 713 states and 837 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:11,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:26:11,011 INFO L93 Difference]: Finished difference Result 1509 states and 1765 transitions. [2023-12-24 16:26:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:26:11,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 142 [2023-12-24 16:26:11,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:26:11,013 INFO L225 Difference]: With dead ends: 1509 [2023-12-24 16:26:11,013 INFO L226 Difference]: Without dead ends: 819 [2023-12-24 16:26:11,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:26:11,014 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 163 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:26:11,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 604 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:26:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2023-12-24 16:26:11,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 711. [2023-12-24 16:26:11,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 659 states have (on average 1.157814871016692) internal successors, (763), 662 states have internal predecessors, (763), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:26:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 833 transitions. [2023-12-24 16:26:11,086 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 833 transitions. Word has length 142 [2023-12-24 16:26:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:26:11,086 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 833 transitions. [2023-12-24 16:26:11,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 833 transitions. [2023-12-24 16:26:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:26:11,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:26:11,087 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:11,096 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 (64)] Forceful destruction successful, exit code 0 [2023-12-24 16:26:11,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:26:11,288 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:26:11,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:26:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash 140171025, now seen corresponding path program 1 times [2023-12-24 16:26:11,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:26:11,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305970403] [2023-12-24 16:26:11,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:26:11,289 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 16:26:11,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:26:11,290 INFO L229 MonitoredProcess]: Starting monitored process 65 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 16:26:11,291 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 (65)] Waiting until timeout for monitored process [2023-12-24 16:26:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:26:11,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:26:11,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:26:12,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-12-24 16:26:12,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:26:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:26:12,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:26:12,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:26:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:26:12,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:26:12,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305970403] [2023-12-24 16:26:12,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305970403] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:26:12,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:26:12,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-12-24 16:26:12,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162477291] [2023-12-24 16:26:12,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:26:12,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:26:12,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:26:12,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:26:12,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:26:12,799 INFO L87 Difference]: Start difference. First operand 711 states and 833 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:13,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:26:13,608 INFO L93 Difference]: Finished difference Result 1482 states and 1728 transitions. [2023-12-24 16:26:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:26:13,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 142 [2023-12-24 16:26:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:26:13,611 INFO L225 Difference]: With dead ends: 1482 [2023-12-24 16:26:13,611 INFO L226 Difference]: Without dead ends: 794 [2023-12-24 16:26:13,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:26:13,612 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 119 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:26:13,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 686 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:26:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-12-24 16:26:13,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 614. [2023-12-24 16:26:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 567 states have (on average 1.1657848324514992) internal successors, (661), 569 states have internal predecessors, (661), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:26:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 723 transitions. [2023-12-24 16:26:13,676 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 723 transitions. Word has length 142 [2023-12-24 16:26:13,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:26:13,677 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 723 transitions. [2023-12-24 16:26:13,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:13,677 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 723 transitions. [2023-12-24 16:26:13,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 16:26:13,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:26:13,678 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:13,688 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 (65)] Forceful destruction successful, exit code 0 [2023-12-24 16:26:13,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:26:13,878 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:26:13,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:26:13,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1402666471, now seen corresponding path program 1 times [2023-12-24 16:26:13,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:26:13,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248191014] [2023-12-24 16:26:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:26:13,880 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 16:26:13,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:26:13,881 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:26:13,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2023-12-24 16:26:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:26:14,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:26:14,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:26:14,707 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 33 treesize of output 29 [2023-12-24 16:26:14,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2023-12-24 16:26:14,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-24 16:26:14,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 16:26:15,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:26:15,290 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-24 16:26:15,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:26:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:26:16,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:26:16,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248191014] [2023-12-24 16:26:16,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248191014] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:26:16,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:26:16,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 21 [2023-12-24 16:26:16,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169128115] [2023-12-24 16:26:16,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:26:16,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:26:16,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:26:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:26:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:26:16,288 INFO L87 Difference]: Start difference. First operand 614 states and 723 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:31,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:26:31,514 INFO L93 Difference]: Finished difference Result 1530 states and 1781 transitions. [2023-12-24 16:26:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 16:26:31,515 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2023-12-24 16:26:31,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:26:31,516 INFO L225 Difference]: With dead ends: 1530 [2023-12-24 16:26:31,516 INFO L226 Difference]: Without dead ends: 917 [2023-12-24 16:26:31,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 267 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=154, Invalid=715, Unknown=1, NotChecked=0, Total=870 [2023-12-24 16:26:31,518 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 155 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:26:31,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1862 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 16:26:31,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-12-24 16:26:31,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 817. [2023-12-24 16:26:31,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 770 states have (on average 1.138961038961039) internal successors, (877), 772 states have internal predecessors, (877), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:26:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 939 transitions. [2023-12-24 16:26:31,588 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 939 transitions. Word has length 144 [2023-12-24 16:26:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:26:31,589 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 939 transitions. [2023-12-24 16:26:31,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 939 transitions. [2023-12-24 16:26:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 16:26:31,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:26:31,590 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:31,601 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 (66)] Forceful destruction successful, exit code 0 [2023-12-24 16:26:31,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:26:31,792 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:26:31,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:26:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1660831909, now seen corresponding path program 1 times [2023-12-24 16:26:31,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:26:31,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339637080] [2023-12-24 16:26:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:26:31,793 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 16:26:31,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:26:31,794 INFO L229 MonitoredProcess]: Starting monitored process 67 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 16:26:31,794 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 (67)] Waiting until timeout for monitored process [2023-12-24 16:26:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:26:32,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:26:32,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:26:33,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:26:33,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:26:33,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-12-24 16:26:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 280 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-24 16:26:33,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:26:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:26:33,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:26:33,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339637080] [2023-12-24 16:26:33,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339637080] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:26:33,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:26:33,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2023-12-24 16:26:33,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827929576] [2023-12-24 16:26:33,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:26:33,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:26:33,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:26:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:26:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:26:33,715 INFO L87 Difference]: Start difference. First operand 817 states and 939 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:26:34,303 INFO L93 Difference]: Finished difference Result 1793 states and 2058 transitions. [2023-12-24 16:26:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:26:34,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2023-12-24 16:26:34,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:26:34,306 INFO L225 Difference]: With dead ends: 1793 [2023-12-24 16:26:34,306 INFO L226 Difference]: Without dead ends: 977 [2023-12-24 16:26:34,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:26:34,308 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 127 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:26:34,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 437 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:26:34,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-12-24 16:26:34,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 869. [2023-12-24 16:26:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 822 states have (on average 1.1265206812652069) internal successors, (926), 824 states have internal predecessors, (926), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:26:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 988 transitions. [2023-12-24 16:26:34,407 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 988 transitions. Word has length 144 [2023-12-24 16:26:34,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:26:34,407 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 988 transitions. [2023-12-24 16:26:34,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 988 transitions. [2023-12-24 16:26:34,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 16:26:34,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:26:34,409 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:34,422 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 (67)] Forceful destruction successful, exit code 0 [2023-12-24 16:26:34,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:26:34,622 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:26:34,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:26:34,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1677426085, now seen corresponding path program 1 times [2023-12-24 16:26:34,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:26:34,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377568728] [2023-12-24 16:26:34,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:26:34,623 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 16:26:34,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:26:34,626 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:26:34,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2023-12-24 16:26:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:26:35,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:26:35,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:26:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 280 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-24 16:26:36,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:26:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:26:36,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:26:36,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377568728] [2023-12-24 16:26:36,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377568728] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:26:36,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:26:36,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2023-12-24 16:26:36,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535434836] [2023-12-24 16:26:36,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:26:36,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:26:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:26:36,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:26:36,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:26:36,535 INFO L87 Difference]: Start difference. First operand 869 states and 988 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:26:37,135 INFO L93 Difference]: Finished difference Result 1813 states and 2066 transitions. [2023-12-24 16:26:37,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:26:37,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2023-12-24 16:26:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:26:37,137 INFO L225 Difference]: With dead ends: 1813 [2023-12-24 16:26:37,137 INFO L226 Difference]: Without dead ends: 945 [2023-12-24 16:26:37,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:26:37,138 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 71 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:26:37,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 611 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:26:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2023-12-24 16:26:37,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 869. [2023-12-24 16:26:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 822 states have (on average 1.1228710462287104) internal successors, (923), 824 states have internal predecessors, (923), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:26:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 985 transitions. [2023-12-24 16:26:37,247 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 985 transitions. Word has length 144 [2023-12-24 16:26:37,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:26:37,247 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 985 transitions. [2023-12-24 16:26:37,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:37,247 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 985 transitions. [2023-12-24 16:26:37,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 16:26:37,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:26:37,249 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:37,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2023-12-24 16:26:37,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:26:37,461 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:26:37,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:26:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1935591523, now seen corresponding path program 1 times [2023-12-24 16:26:37,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:26:37,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292750955] [2023-12-24 16:26:37,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:26:37,462 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 16:26:37,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:26:37,463 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:26:37,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2023-12-24 16:26:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:26:37,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:26:37,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:26:38,140 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 39 treesize of output 35 [2023-12-24 16:26:38,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-12-24 16:26:38,355 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 48 treesize of output 40 [2023-12-24 16:26:38,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:26:38,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:26:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-24 16:26:38,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:26:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:26:39,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:26:39,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292750955] [2023-12-24 16:26:39,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292750955] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:26:39,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:26:39,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 18 [2023-12-24 16:26:39,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101869392] [2023-12-24 16:26:39,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:26:39,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:26:39,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:26:39,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:26:39,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:26:39,597 INFO L87 Difference]: Start difference. First operand 869 states and 985 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:26:45,455 INFO L93 Difference]: Finished difference Result 1852 states and 2096 transitions. [2023-12-24 16:26:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:26:45,457 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2023-12-24 16:26:45,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:26:45,458 INFO L225 Difference]: With dead ends: 1852 [2023-12-24 16:26:45,458 INFO L226 Difference]: Without dead ends: 984 [2023-12-24 16:26:45,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 270 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:26:45,459 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 139 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:26:45,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1914 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 16:26:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2023-12-24 16:26:45,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 909. [2023-12-24 16:26:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 862 states have (on average 1.1136890951276102) internal successors, (960), 864 states have internal predecessors, (960), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:26:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1022 transitions. [2023-12-24 16:26:45,521 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1022 transitions. Word has length 144 [2023-12-24 16:26:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:26:45,521 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 1022 transitions. [2023-12-24 16:26:45,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1022 transitions. [2023-12-24 16:26:45,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 16:26:45,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:26:45,522 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:45,532 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 (69)] Forceful destruction successful, exit code 0 [2023-12-24 16:26:45,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:26:45,723 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:26:45,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:26:45,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1482039321, now seen corresponding path program 1 times [2023-12-24 16:26:45,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:26:45,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190797992] [2023-12-24 16:26:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:26:45,725 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 16:26:45,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:26:45,725 INFO L229 MonitoredProcess]: Starting monitored process 70 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 16:26:45,726 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 (70)] Waiting until timeout for monitored process [2023-12-24 16:26:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:26:46,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:26:46,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:26:46,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-12-24 16:26:46,712 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 38 treesize of output 30 [2023-12-24 16:26:46,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-12-24 16:26:46,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-12-24 16:26:46,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 16:26:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-24 16:26:47,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:26:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:26:48,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:26:48,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190797992] [2023-12-24 16:26:48,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190797992] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:26:48,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:26:48,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 21 [2023-12-24 16:26:48,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543992427] [2023-12-24 16:26:48,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:26:48,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:26:48,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:26:48,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:26:48,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:26:48,173 INFO L87 Difference]: Start difference. First operand 909 states and 1022 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:26:59,590 INFO L93 Difference]: Finished difference Result 1860 states and 2095 transitions. [2023-12-24 16:26:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:26:59,591 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2023-12-24 16:26:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:26:59,592 INFO L225 Difference]: With dead ends: 1860 [2023-12-24 16:26:59,592 INFO L226 Difference]: Without dead ends: 952 [2023-12-24 16:26:59,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 267 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:26:59,593 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 137 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:26:59,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1839 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 16:26:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-12-24 16:26:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 911. [2023-12-24 16:26:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 864 states have (on average 1.1145833333333333) internal successors, (963), 866 states have internal predecessors, (963), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:26:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1025 transitions. [2023-12-24 16:26:59,656 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1025 transitions. Word has length 144 [2023-12-24 16:26:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:26:59,657 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1025 transitions. [2023-12-24 16:26:59,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:26:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1025 transitions. [2023-12-24 16:26:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 16:26:59,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:26:59,658 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:59,670 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 (70)] Forceful destruction successful, exit code 0 [2023-12-24 16:26:59,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:26:59,868 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:26:59,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:26:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1875066331, now seen corresponding path program 1 times [2023-12-24 16:26:59,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:26:59,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579724721] [2023-12-24 16:26:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:26:59,869 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 16:26:59,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:26:59,870 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:26:59,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2023-12-24 16:27:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:27:00,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:27:00,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:27:00,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:27:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:27:00,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:27:00,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:27:00,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579724721] [2023-12-24 16:27:00,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579724721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:27:00,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:27:00,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:27:00,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637008144] [2023-12-24 16:27:00,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:27:00,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:27:00,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:27:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:27:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:27:00,452 INFO L87 Difference]: Start difference. First operand 911 states and 1025 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:27:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:27:01,152 INFO L93 Difference]: Finished difference Result 1862 states and 2097 transitions. [2023-12-24 16:27:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:27:01,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2023-12-24 16:27:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:27:01,154 INFO L225 Difference]: With dead ends: 1862 [2023-12-24 16:27:01,154 INFO L226 Difference]: Without dead ends: 952 [2023-12-24 16:27:01,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:27:01,155 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 61 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:27:01,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 661 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:27:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-12-24 16:27:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 911. [2023-12-24 16:27:01,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 864 states have (on average 1.1122685185185186) internal successors, (961), 866 states have internal predecessors, (961), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:27:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1023 transitions. [2023-12-24 16:27:01,247 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1023 transitions. Word has length 144 [2023-12-24 16:27:01,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:27:01,247 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1023 transitions. [2023-12-24 16:27:01,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:27:01,247 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1023 transitions. [2023-12-24 16:27:01,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 16:27:01,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:27:01,249 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:01,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2023-12-24 16:27:01,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:27:01,468 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:27:01,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:27:01,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1459407067, now seen corresponding path program 1 times [2023-12-24 16:27:01,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:27:01,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071588504] [2023-12-24 16:27:01,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:27:01,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:27:01,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:27:01,470 INFO L229 MonitoredProcess]: Starting monitored process 72 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 16:27:01,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2023-12-24 16:27:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:27:01,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:27:01,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:27:02,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 16:27:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:27:02,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:27:02,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:27:02,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071588504] [2023-12-24 16:27:02,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071588504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:27:02,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:27:02,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:27:02,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69280843] [2023-12-24 16:27:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:27:02,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:27:02,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:27:02,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:27:02,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:27:02,068 INFO L87 Difference]: Start difference. First operand 911 states and 1023 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:27:02,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:27:02,749 INFO L93 Difference]: Finished difference Result 1876 states and 2110 transitions. [2023-12-24 16:27:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:27:02,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2023-12-24 16:27:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:27:02,751 INFO L225 Difference]: With dead ends: 1876 [2023-12-24 16:27:02,751 INFO L226 Difference]: Without dead ends: 966 [2023-12-24 16:27:02,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:27:02,752 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 51 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:27:02,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 569 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:27:02,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-12-24 16:27:02,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 905. [2023-12-24 16:27:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 858 states have (on average 1.1118881118881119) internal successors, (954), 860 states have internal predecessors, (954), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:27:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1016 transitions. [2023-12-24 16:27:02,845 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1016 transitions. Word has length 144 [2023-12-24 16:27:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:27:02,845 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1016 transitions. [2023-12-24 16:27:02,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:27:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1016 transitions. [2023-12-24 16:27:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 16:27:02,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:27:02,847 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:02,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2023-12-24 16:27:03,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:27:03,059 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:27:03,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:27:03,060 INFO L85 PathProgramCache]: Analyzing trace with hash -949114269, now seen corresponding path program 1 times [2023-12-24 16:27:03,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:27:03,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054865840] [2023-12-24 16:27:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:27:03,060 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 16:27:03,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:27:03,061 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:27:03,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2023-12-24 16:27:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:27:03,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:27:03,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:27:03,759 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 40 treesize of output 36 [2023-12-24 16:27:03,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2023-12-24 16:27:04,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-12-24 16:27:04,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 16:27:04,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:27:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-24 16:27:04,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:27:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:27:05,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:27:05,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054865840] [2023-12-24 16:27:05,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054865840] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:27:05,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:27:05,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 18 [2023-12-24 16:27:05,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107280201] [2023-12-24 16:27:05,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:27:05,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:27:05,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:27:05,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:27:05,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:27:05,320 INFO L87 Difference]: Start difference. First operand 905 states and 1016 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:27:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:27:10,926 INFO L93 Difference]: Finished difference Result 1827 states and 2053 transitions. [2023-12-24 16:27:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:27:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2023-12-24 16:27:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:27:10,927 INFO L225 Difference]: With dead ends: 1827 [2023-12-24 16:27:10,927 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 16:27:10,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 270 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:27:10,929 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 97 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:27:10,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1816 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 16:27:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 16:27:10,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 16:27:10,930 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 16:27:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 16:27:10,930 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 144 [2023-12-24 16:27:10,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:27:10,930 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 16:27:10,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 16:27:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 16:27:10,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 16:27:10,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 16:27:10,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2023-12-24 16:27:11,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:27:11,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:28:25,683 WARN L293 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 365 DAG size of output: 378 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:28:47,690 WARN L293 SmtUtils]: Spent 21.98s on a formula simplification. DAG size of input: 285 DAG size of output: 255 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:29:09,719 WARN L293 SmtUtils]: Spent 21.91s on a formula simplification. DAG size of input: 285 DAG size of output: 255 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-24 16:33:15,381 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-12-12-6-16-8-16-8-16-8-17-8-17-8-17-8-17-8-17-6-17-6-17-6-17-6-17-6-17-5-6-4-6-2-6-2-6-2-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-62-16-10-17-18-17-18-17-18-17-14-17-11-17-8-17-8-17-6-17-6-17-6-17-6-17-6-17-5-6-4-6-2-6-2-6-2-1 context. [2023-12-24 16:33:15,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:33:15,393 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 16:33:15,395 INFO L158 Benchmark]: Toolchain (without parser) took 851464.00ms. Allocated memory was 297.8MB in the beginning and 744.5MB in the end (delta: 446.7MB). Free memory was 248.7MB in the beginning and 420.6MB in the end (delta: -172.0MB). Peak memory consumption was 275.2MB. Max. memory is 8.0GB. [2023-12-24 16:33:15,396 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 186.6MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 16:33:15,396 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.90ms. Allocated memory is still 297.8MB. Free memory was 248.1MB in the beginning and 232.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 16:33:15,396 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.87ms. Allocated memory is still 297.8MB. Free memory was 232.4MB in the beginning and 229.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 16:33:15,396 INFO L158 Benchmark]: Boogie Preprocessor took 103.66ms. Allocated memory is still 297.8MB. Free memory was 229.3MB in the beginning and 221.4MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-24 16:33:15,396 INFO L158 Benchmark]: RCFGBuilder took 1066.73ms. Allocated memory is still 297.8MB. Free memory was 221.4MB in the beginning and 161.6MB in the end (delta: 59.8MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. [2023-12-24 16:33:15,396 INFO L158 Benchmark]: TraceAbstraction took 849848.92ms. Allocated memory was 297.8MB in the beginning and 744.5MB in the end (delta: 446.7MB). Free memory was 161.1MB in the beginning and 420.6MB in the end (delta: -259.5MB). Peak memory consumption was 188.2MB. Max. memory is 8.0GB. [2023-12-24 16:33:15,397 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 186.6MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 373.90ms. Allocated memory is still 297.8MB. Free memory was 248.1MB in the beginning and 232.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.87ms. Allocated memory is still 297.8MB. Free memory was 232.4MB in the beginning and 229.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 103.66ms. Allocated memory is still 297.8MB. Free memory was 229.3MB in the beginning and 221.4MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 1066.73ms. Allocated memory is still 297.8MB. Free memory was 221.4MB in the beginning and 161.6MB in the end (delta: 59.8MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. * TraceAbstraction took 849848.92ms. Allocated memory was 297.8MB in the beginning and 744.5MB in the end (delta: 446.7MB). Free memory was 161.1MB in the beginning and 420.6MB in the end (delta: -259.5MB). Peak memory consumption was 188.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-4-12-5-16-8-10-6-14-6-17-6-17-6-17-6-17-5-6-4-6-2-6-2-6-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-50-16-7-17-8-17-6-17-6-17-6-17-6-17-6-17-5-6-4-6-2-6-2-6-2-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-12-24 16:33:15,412 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