/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-90.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 14:10:04,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 14:10:04,467 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 14:10:04,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 14:10:04,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 14:10:04,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 14:10:04,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 14:10:04,511 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 14:10:04,511 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 14:10:04,511 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 14:10:04,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 14:10:04,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 14:10:04,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 14:10:04,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 14:10:04,513 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 14:10:04,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 14:10:04,513 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 14:10:04,513 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 14:10:04,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 14:10:04,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 14:10:04,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 14:10:04,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 14:10:04,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 14:10:04,518 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 14:10:04,521 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 14:10:04,521 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 14:10:04,521 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 14:10:04,522 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 14:10:04,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 14:10:04,522 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 14:10:04,523 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 14:10:04,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 14:10:04,523 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 14:10:04,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 14:10:04,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:10:04,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 14:10:04,524 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 14:10:04,524 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 14:10:04,524 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 14:10:04,524 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 14:10:04,524 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 14:10:04,524 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 14:10:04,525 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 14:10:04,525 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 14:10:04,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 14:10:04,525 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 14:10:04,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 14:10:04,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 14:10:04,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 14:10:04,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 14:10:04,681 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 14:10:04,682 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 14:10:04,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-90.i [2023-12-24 14:10:05,660 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 14:10:05,840 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 14:10:05,840 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-90.i [2023-12-24 14:10:05,848 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0892ecc89/3975002a8e6541b3a0910edac38060d5/FLAG56f9bfb42 [2023-12-24 14:10:05,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0892ecc89/3975002a8e6541b3a0910edac38060d5 [2023-12-24 14:10:05,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 14:10:05,866 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 14:10:05,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 14:10:05,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 14:10:05,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 14:10:05,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:10:05" (1/1) ... [2023-12-24 14:10:05,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f7c9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:05, skipping insertion in model container [2023-12-24 14:10:05,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:10:05" (1/1) ... [2023-12-24 14:10:05,901 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 14:10:06,013 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-90.i[916,929] [2023-12-24 14:10:06,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:10:06,071 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 14:10:06,079 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-90.i[916,929] [2023-12-24 14:10:06,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:10:06,120 INFO L206 MainTranslator]: Completed translation [2023-12-24 14:10:06,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06 WrapperNode [2023-12-24 14:10:06,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 14:10:06,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 14:10:06,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 14:10:06,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 14:10:06,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,167 INFO L138 Inliner]: procedures = 33, calls = 165, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 465 [2023-12-24 14:10:06,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 14:10:06,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 14:10:06,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 14:10:06,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 14:10:06,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,180 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,205 INFO L175 MemorySlicer]: Split 130 memory accesses to 5 slices as follows [2, 34, 4, 55, 35]. 42 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 1, 6, 3]. The 19 writes are split as follows [0, 6, 1, 6, 6]. [2023-12-24 14:10:06,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,239 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,242 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 14:10:06,250 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 14:10:06,250 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 14:10:06,250 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 14:10:06,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (1/1) ... [2023-12-24 14:10:06,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:10:06,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 14:10:06,286 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 14:10:06,307 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 14:10:06,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 14:10:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 14:10:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 14:10:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 14:10:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 14:10:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 14:10:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 14:10:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 14:10:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 14:10:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 14:10:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 14:10:06,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 14:10:06,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 14:10:06,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 14:10:06,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 14:10:06,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 14:10:06,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 14:10:06,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 14:10:06,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 14:10:06,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 14:10:06,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 14:10:06,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 14:10:06,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 14:10:06,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 14:10:06,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 14:10:06,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 14:10:06,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 14:10:06,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 14:10:06,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 14:10:06,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 14:10:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 14:10:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 14:10:06,330 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 14:10:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 14:10:06,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 14:10:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 14:10:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 14:10:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 14:10:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 14:10:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 14:10:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 14:10:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 14:10:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 14:10:06,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 14:10:06,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 14:10:06,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 14:10:06,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 14:10:06,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 14:10:06,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 14:10:06,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 14:10:06,437 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 14:10:06,439 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 14:10:06,829 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 14:10:06,876 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 14:10:06,876 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 14:10:06,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:10:06 BoogieIcfgContainer [2023-12-24 14:10:06,877 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 14:10:06,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 14:10:06,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 14:10:06,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 14:10:06,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 02:10:05" (1/3) ... [2023-12-24 14:10:06,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225c6a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:10:06, skipping insertion in model container [2023-12-24 14:10:06,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:10:06" (2/3) ... [2023-12-24 14:10:06,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225c6a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:10:06, skipping insertion in model container [2023-12-24 14:10:06,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:10:06" (3/3) ... [2023-12-24 14:10:06,882 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-90.i [2023-12-24 14:10:06,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 14:10:06,895 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 14:10:06,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 14:10:06,936 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;@39b3c21d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 14:10:06,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 14:10:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 82 states have internal predecessors, (114), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 14:10:06,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 14:10:06,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:06,948 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:06,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:06,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1750151490, now seen corresponding path program 1 times [2023-12-24 14:10:06,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:06,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677539053] [2023-12-24 14:10:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:06,962 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 14:10:06,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:06,963 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 14:10:06,964 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 14:10:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:07,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 14:10:07,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-12-24 14:10:07,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:07,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:07,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677539053] [2023-12-24 14:10:07,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677539053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:07,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:07,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 14:10:07,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241737737] [2023-12-24 14:10:07,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:07,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 14:10:07,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:07,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 14:10:07,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 14:10:07,219 INFO L87 Difference]: Start difference. First operand has 104 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 82 states have internal predecessors, (114), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 14:10:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:07,270 INFO L93 Difference]: Finished difference Result 205 states and 326 transitions. [2023-12-24 14:10:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 14:10:07,271 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2023-12-24 14:10:07,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:07,276 INFO L225 Difference]: With dead ends: 205 [2023-12-24 14:10:07,276 INFO L226 Difference]: Without dead ends: 102 [2023-12-24 14:10:07,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 147 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 14:10:07,312 INFO L413 NwaCegarLoop]: 145 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, 145 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 14:10:07,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:10:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-24 14:10:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-24 14:10:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.3625) internal successors, (109), 80 states have internal predecessors, (109), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 14:10:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 149 transitions. [2023-12-24 14:10:07,347 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 149 transitions. Word has length 148 [2023-12-24 14:10:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:07,347 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 149 transitions. [2023-12-24 14:10:07,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 14:10:07,362 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 149 transitions. [2023-12-24 14:10:07,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 14:10:07,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:07,366 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:07,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 14:10:07,570 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 14:10:07,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:07,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:07,573 INFO L85 PathProgramCache]: Analyzing trace with hash -305656682, now seen corresponding path program 1 times [2023-12-24 14:10:07,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:07,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141515057] [2023-12-24 14:10:07,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:07,574 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 14:10:07,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:07,593 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 14:10:07,594 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 14:10:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:07,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 14:10:07,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:07,836 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 14:10:07,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 9 [2023-12-24 14:10:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:07,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:07,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:07,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141515057] [2023-12-24 14:10:07,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141515057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:07,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:07,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:10:07,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697280465] [2023-12-24 14:10:07,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:07,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:10:07,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:10:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:10:07,885 INFO L87 Difference]: Start difference. First operand 102 states and 149 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:08,096 INFO L93 Difference]: Finished difference Result 306 states and 447 transitions. [2023-12-24 14:10:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:10:08,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2023-12-24 14:10:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:08,104 INFO L225 Difference]: With dead ends: 306 [2023-12-24 14:10:08,104 INFO L226 Difference]: Without dead ends: 205 [2023-12-24 14:10:08,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 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 14:10:08,106 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 139 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:08,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 891 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:10:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-24 14:10:08,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 107. [2023-12-24 14:10:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 85 states have (on average 1.3529411764705883) internal successors, (115), 85 states have internal predecessors, (115), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 14:10:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions. [2023-12-24 14:10:08,117 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 148 [2023-12-24 14:10:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:08,118 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 155 transitions. [2023-12-24 14:10:08,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions. [2023-12-24 14:10:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 14:10:08,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:08,120 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:08,124 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 14:10:08,321 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 14:10:08,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:08,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:08,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1994600424, now seen corresponding path program 1 times [2023-12-24 14:10:08,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:08,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992646133] [2023-12-24 14:10:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:08,322 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 14:10:08,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:08,323 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 14:10:08,325 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 14:10:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:08,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 14:10:08,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:08,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:08,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:08,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992646133] [2023-12-24 14:10:08,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992646133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:08,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:08,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 14:10:08,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36210741] [2023-12-24 14:10:08,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:08,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 14:10:08,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:08,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 14:10:08,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 14:10:08,521 INFO L87 Difference]: Start difference. First operand 107 states and 155 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:08,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:08,561 INFO L93 Difference]: Finished difference Result 241 states and 351 transitions. [2023-12-24 14:10:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:10:08,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2023-12-24 14:10:08,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:08,564 INFO L225 Difference]: With dead ends: 241 [2023-12-24 14:10:08,565 INFO L226 Difference]: Without dead ends: 135 [2023-12-24 14:10:08,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 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 14:10:08,568 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 61 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:08,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 466 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:10:08,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-24 14:10:08,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2023-12-24 14:10:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 87 states have internal predecessors, (117), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 14:10:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 157 transitions. [2023-12-24 14:10:08,584 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 157 transitions. Word has length 148 [2023-12-24 14:10:08,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:08,585 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 157 transitions. [2023-12-24 14:10:08,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:08,585 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 157 transitions. [2023-12-24 14:10:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 14:10:08,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:08,586 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:08,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 14:10:08,790 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 14:10:08,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:08,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:08,791 INFO L85 PathProgramCache]: Analyzing trace with hash -906502019, now seen corresponding path program 1 times [2023-12-24 14:10:08,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:08,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044071448] [2023-12-24 14:10:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:08,792 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 14:10:08,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:08,794 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 14:10:08,795 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 14:10:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:08,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:10:08,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:08,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:08,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:08,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044071448] [2023-12-24 14:10:08,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044071448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:08,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:08,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:10:08,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55535477] [2023-12-24 14:10:08,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:08,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:10:08,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:09,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:10:09,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:10:09,000 INFO L87 Difference]: Start difference. First operand 109 states and 157 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:09,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:09,223 INFO L93 Difference]: Finished difference Result 337 states and 488 transitions. [2023-12-24 14:10:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:10:09,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-24 14:10:09,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:09,225 INFO L225 Difference]: With dead ends: 337 [2023-12-24 14:10:09,225 INFO L226 Difference]: Without dead ends: 229 [2023-12-24 14:10:09,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:10:09,227 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 209 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:09,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 473 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:10:09,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-24 14:10:09,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 111. [2023-12-24 14:10:09,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 89 states have internal predecessors, (119), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 14:10:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2023-12-24 14:10:09,233 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 150 [2023-12-24 14:10:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:09,233 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2023-12-24 14:10:09,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2023-12-24 14:10:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 14:10:09,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:09,235 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:09,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 14:10:09,435 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 14:10:09,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:09,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash -576930377, now seen corresponding path program 1 times [2023-12-24 14:10:09,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:09,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315520090] [2023-12-24 14:10:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:09,437 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 14:10:09,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:09,456 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 14:10:09,457 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 14:10:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:09,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:10:09,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:09,649 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 8 treesize of output 1 [2023-12-24 14:10:09,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-24 14:10:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:09,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:09,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:09,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315520090] [2023-12-24 14:10:09,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315520090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:09,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:09,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 14:10:09,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701445441] [2023-12-24 14:10:09,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:09,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:10:09,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:09,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:10:09,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:10:09,710 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:09,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:09,844 INFO L93 Difference]: Finished difference Result 245 states and 349 transitions. [2023-12-24 14:10:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 14:10:09,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2023-12-24 14:10:09,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:09,846 INFO L225 Difference]: With dead ends: 245 [2023-12-24 14:10:09,846 INFO L226 Difference]: Without dead ends: 135 [2023-12-24 14:10:09,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:10:09,847 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 203 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:09,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 549 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:10:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-24 14:10:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 118. [2023-12-24 14:10:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 95 states have internal predecessors, (125), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 14:10:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 165 transitions. [2023-12-24 14:10:09,859 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 165 transitions. Word has length 151 [2023-12-24 14:10:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:09,859 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 165 transitions. [2023-12-24 14:10:09,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:09,859 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 165 transitions. [2023-12-24 14:10:09,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:10:09,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:09,860 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:09,871 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 14:10:10,069 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 14:10:10,070 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:10,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:10,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1156097376, now seen corresponding path program 1 times [2023-12-24 14:10:10,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:10,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140515141] [2023-12-24 14:10:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:10,071 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 14:10:10,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:10,072 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 14:10:10,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 14:10:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:10,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 14:10:10,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:10,259 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 8 treesize of output 1 [2023-12-24 14:10:10,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-24 14:10:10,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:10,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 14:10:11,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:11,129 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 60 treesize of output 30 [2023-12-24 14:10:11,149 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 178 proven. 96 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2023-12-24 14:10:11,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 96 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2023-12-24 14:10:11,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:11,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140515141] [2023-12-24 14:10:11,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140515141] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:10:11,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:10:11,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 16 [2023-12-24 14:10:11,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758645972] [2023-12-24 14:10:11,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:10:11,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 14:10:11,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:11,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 14:10:11,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:10:11,436 INFO L87 Difference]: Start difference. First operand 118 states and 165 transitions. Second operand has 16 states, 12 states have (on average 7.75) internal successors, (93), 15 states have internal predecessors, (93), 7 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (38), 4 states have call predecessors, (38), 7 states have call successors, (38) [2023-12-24 14:10:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:11,983 INFO L93 Difference]: Finished difference Result 242 states and 333 transitions. [2023-12-24 14:10:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 14:10:11,983 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 7.75) internal successors, (93), 15 states have internal predecessors, (93), 7 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (38), 4 states have call predecessors, (38), 7 states have call successors, (38) Word has length 152 [2023-12-24 14:10:11,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:11,985 INFO L225 Difference]: With dead ends: 242 [2023-12-24 14:10:11,985 INFO L226 Difference]: Without dead ends: 125 [2023-12-24 14:10:11,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2023-12-24 14:10:11,986 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 162 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:11,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 692 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:10:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-24 14:10:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2023-12-24 14:10:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 96 states have (on average 1.2916666666666667) internal successors, (124), 96 states have internal predecessors, (124), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 14:10:11,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 164 transitions. [2023-12-24 14:10:11,996 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 164 transitions. Word has length 152 [2023-12-24 14:10:11,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:11,996 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 164 transitions. [2023-12-24 14:10:11,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 7.75) internal successors, (93), 15 states have internal predecessors, (93), 7 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (38), 4 states have call predecessors, (38), 7 states have call successors, (38) [2023-12-24 14:10:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 164 transitions. [2023-12-24 14:10:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:10:11,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:11,998 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:12,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 14:10:12,203 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 14:10:12,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:12,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1333431586, now seen corresponding path program 1 times [2023-12-24 14:10:12,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:12,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820951085] [2023-12-24 14:10:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:12,205 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 14:10:12,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:12,206 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 14:10:12,212 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 14:10:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:12,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 14:10:12,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:12,393 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 8 treesize of output 1 [2023-12-24 14:10:12,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:10:12,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:12,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 36 [2023-12-24 14:10:12,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:12,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-24 14:10:13,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:13,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2023-12-24 14:10:13,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:13,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 22 [2023-12-24 14:10:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 221 proven. 54 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-24 14:10:13,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-24 14:10:13,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:13,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820951085] [2023-12-24 14:10:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820951085] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:10:13,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:10:13,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2023-12-24 14:10:13,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462558644] [2023-12-24 14:10:13,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:10:13,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 14:10:13,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 14:10:13,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:10:13,478 INFO L87 Difference]: Start difference. First operand 121 states and 164 transitions. Second operand has 16 states, 14 states have (on average 7.071428571428571) internal successors, (99), 16 states have internal predecessors, (99), 6 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (39), 4 states have call predecessors, (39), 6 states have call successors, (39) [2023-12-24 14:10:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:14,561 INFO L93 Difference]: Finished difference Result 373 states and 496 transitions. [2023-12-24 14:10:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 14:10:14,562 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.071428571428571) internal successors, (99), 16 states have internal predecessors, (99), 6 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (39), 4 states have call predecessors, (39), 6 states have call successors, (39) Word has length 152 [2023-12-24 14:10:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:14,563 INFO L225 Difference]: With dead ends: 373 [2023-12-24 14:10:14,563 INFO L226 Difference]: Without dead ends: 253 [2023-12-24 14:10:14,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=294, Invalid=1038, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 14:10:14,564 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 408 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:14,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 891 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 14:10:14,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-24 14:10:14,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 129. [2023-12-24 14:10:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 103 states have (on average 1.2815533980582525) internal successors, (132), 103 states have internal predecessors, (132), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 14:10:14,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2023-12-24 14:10:14,574 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 152 [2023-12-24 14:10:14,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:14,574 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2023-12-24 14:10:14,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.071428571428571) internal successors, (99), 16 states have internal predecessors, (99), 6 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (39), 4 states have call predecessors, (39), 6 states have call successors, (39) [2023-12-24 14:10:14,574 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2023-12-24 14:10:14,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:10:14,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:14,575 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:14,581 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 (8)] Ended with exit code 0 [2023-12-24 14:10:14,780 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 14:10:14,781 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:14,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash 486184043, now seen corresponding path program 1 times [2023-12-24 14:10:14,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:14,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510836738] [2023-12-24 14:10:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:14,783 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 14:10:14,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:14,784 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 14:10:14,833 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 14:10:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:14,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 14:10:14,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:14,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:10:15,077 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 8 treesize of output 1 [2023-12-24 14:10:15,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-24 14:10:15,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:15,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 62 treesize of output 41 [2023-12-24 14:10:15,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:15,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 80 treesize of output 58 [2023-12-24 14:10:16,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:16,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 40 [2023-12-24 14:10:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 388 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 14:10:16,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:16,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:16,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510836738] [2023-12-24 14:10:16,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510836738] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:10:16,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:10:16,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [21] total 27 [2023-12-24 14:10:16,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316749172] [2023-12-24 14:10:16,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:16,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:10:16,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:16,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:10:16,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2023-12-24 14:10:16,508 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:17,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:17,258 INFO L93 Difference]: Finished difference Result 430 states and 580 transitions. [2023-12-24 14:10:17,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 14:10:17,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2023-12-24 14:10:17,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:17,260 INFO L225 Difference]: With dead ends: 430 [2023-12-24 14:10:17,260 INFO L226 Difference]: Without dead ends: 302 [2023-12-24 14:10:17,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 14:10:17,261 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 300 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:17,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1365 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 14:10:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-24 14:10:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 210. [2023-12-24 14:10:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 168 states have (on average 1.2738095238095237) internal successors, (214), 169 states have internal predecessors, (214), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 14:10:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 278 transitions. [2023-12-24 14:10:17,277 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 278 transitions. Word has length 152 [2023-12-24 14:10:17,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:17,277 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 278 transitions. [2023-12-24 14:10:17,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 278 transitions. [2023-12-24 14:10:17,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:10:17,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:17,278 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:17,292 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 14:10:17,491 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 14:10:17,492 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:17,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:17,493 INFO L85 PathProgramCache]: Analyzing trace with hash -100621971, now seen corresponding path program 1 times [2023-12-24 14:10:17,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:17,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472637608] [2023-12-24 14:10:17,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:17,493 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 14:10:17,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:17,497 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 14:10:17,498 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 14:10:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:17,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 14:10:17,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:17,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:10:17,777 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 14:10:17,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 14:10:18,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:18,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 51 treesize of output 32 [2023-12-24 14:10:18,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:18,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 56 [2023-12-24 14:10:18,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:18,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 78 [2023-12-24 14:10:19,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:19,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 119 treesize of output 53 [2023-12-24 14:10:19,120 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 497 proven. 18 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-24 14:10:19,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:19,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:19,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472637608] [2023-12-24 14:10:19,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472637608] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:10:19,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:10:19,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2023-12-24 14:10:19,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364621718] [2023-12-24 14:10:19,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:19,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:10:19,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:19,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:10:19,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-12-24 14:10:19,339 INFO L87 Difference]: Start difference. First operand 210 states and 278 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:19,760 INFO L93 Difference]: Finished difference Result 522 states and 688 transitions. [2023-12-24 14:10:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:10:19,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2023-12-24 14:10:19,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:19,763 INFO L225 Difference]: With dead ends: 522 [2023-12-24 14:10:19,763 INFO L226 Difference]: Without dead ends: 313 [2023-12-24 14:10:19,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-12-24 14:10:19,764 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 200 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:19,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 521 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:10:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-24 14:10:19,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 247. [2023-12-24 14:10:19,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 190 states have (on average 1.231578947368421) internal successors, (234), 192 states have internal predecessors, (234), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 14:10:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 318 transitions. [2023-12-24 14:10:19,783 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 318 transitions. Word has length 152 [2023-12-24 14:10:19,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:19,783 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 318 transitions. [2023-12-24 14:10:19,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:19,783 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 318 transitions. [2023-12-24 14:10:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:10:19,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:19,784 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:19,799 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 14:10:19,990 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 14:10:19,990 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:19,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1102163859, now seen corresponding path program 1 times [2023-12-24 14:10:19,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:19,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634290829] [2023-12-24 14:10:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:19,991 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 14:10:19,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:19,992 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 14:10:19,993 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 14:10:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:20,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 14:10:20,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:20,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:10:20,291 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 1 [2023-12-24 14:10:20,306 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 1 [2023-12-24 14:10:20,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 14:10:20,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:20,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 48 [2023-12-24 14:10:20,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:20,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 71 [2023-12-24 14:10:20,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:20,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 50 [2023-12-24 14:10:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 357 proven. 18 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-12-24 14:10:21,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:21,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:21,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634290829] [2023-12-24 14:10:21,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634290829] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:10:21,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:10:21,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 14:10:21,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461498317] [2023-12-24 14:10:21,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:21,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:10:21,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:21,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:10:21,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-12-24 14:10:21,272 INFO L87 Difference]: Start difference. First operand 247 states and 318 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:21,613 INFO L93 Difference]: Finished difference Result 558 states and 726 transitions. [2023-12-24 14:10:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:10:21,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2023-12-24 14:10:21,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:21,619 INFO L225 Difference]: With dead ends: 558 [2023-12-24 14:10:21,619 INFO L226 Difference]: Without dead ends: 348 [2023-12-24 14:10:21,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-12-24 14:10:21,620 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 154 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:21,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 621 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:10:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-24 14:10:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 280. [2023-12-24 14:10:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 223 states have (on average 1.2556053811659194) internal successors, (280), 225 states have internal predecessors, (280), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 14:10:21,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 364 transitions. [2023-12-24 14:10:21,646 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 364 transitions. Word has length 152 [2023-12-24 14:10:21,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:21,646 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 364 transitions. [2023-12-24 14:10:21,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:21,646 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 364 transitions. [2023-12-24 14:10:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:10:21,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:21,648 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:21,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 14:10:21,853 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 14:10:21,853 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:21,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1688969873, now seen corresponding path program 1 times [2023-12-24 14:10:21,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:21,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465008369] [2023-12-24 14:10:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:21,854 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 14:10:21,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:21,856 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 14:10:21,857 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 14:10:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:22,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 14:10:22,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:22,065 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 14:10:22,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 14:10:22,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:22,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 35 treesize of output 37 [2023-12-24 14:10:22,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:22,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 40 [2023-12-24 14:10:22,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:22,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 53 [2023-12-24 14:10:22,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:22,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 29 [2023-12-24 14:10:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-24 14:10:22,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:22,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:22,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465008369] [2023-12-24 14:10:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465008369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:22,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:22,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 14:10:22,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18531963] [2023-12-24 14:10:22,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:22,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 14:10:22,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:22,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 14:10:22,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-24 14:10:22,749 INFO L87 Difference]: Start difference. First operand 280 states and 364 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 14:10:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:23,966 INFO L93 Difference]: Finished difference Result 658 states and 857 transitions. [2023-12-24 14:10:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 14:10:23,967 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 152 [2023-12-24 14:10:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:23,968 INFO L225 Difference]: With dead ends: 658 [2023-12-24 14:10:23,968 INFO L226 Difference]: Without dead ends: 379 [2023-12-24 14:10:23,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2023-12-24 14:10:23,969 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 604 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:23,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1036 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 14:10:23,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-24 14:10:23,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 278. [2023-12-24 14:10:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 221 states have (on average 1.253393665158371) internal successors, (277), 223 states have internal predecessors, (277), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 14:10:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 361 transitions. [2023-12-24 14:10:23,994 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 361 transitions. Word has length 152 [2023-12-24 14:10:23,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:23,995 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 361 transitions. [2023-12-24 14:10:23,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 14:10:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 361 transitions. [2023-12-24 14:10:23,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 14:10:23,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:23,996 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:24,014 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 14:10:24,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:10:24,201 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:24,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1738577047, now seen corresponding path program 1 times [2023-12-24 14:10:24,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:24,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173917316] [2023-12-24 14:10:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:24,202 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 14:10:24,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:24,203 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:10:24,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 14:10:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:24,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 14:10:24,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:24,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:10:24,470 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 8 treesize of output 1 [2023-12-24 14:10:24,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-24 14:10:24,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 12 [2023-12-24 14:10:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:24,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:24,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173917316] [2023-12-24 14:10:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173917316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:24,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 14:10:24,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379278759] [2023-12-24 14:10:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:24,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:10:24,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:10:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 14:10:24,634 INFO L87 Difference]: Start difference. First operand 278 states and 361 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:25,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:25,257 INFO L93 Difference]: Finished difference Result 1025 states and 1373 transitions. [2023-12-24 14:10:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:10:25,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2023-12-24 14:10:25,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:25,260 INFO L225 Difference]: With dead ends: 1025 [2023-12-24 14:10:25,260 INFO L226 Difference]: Without dead ends: 748 [2023-12-24 14:10:25,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:10:25,261 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 320 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:25,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 684 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 14:10:25,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-12-24 14:10:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 388. [2023-12-24 14:10:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 305 states have (on average 1.2327868852459016) internal successors, (376), 307 states have internal predecessors, (376), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 14:10:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 500 transitions. [2023-12-24 14:10:25,316 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 500 transitions. Word has length 153 [2023-12-24 14:10:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:25,316 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 500 transitions. [2023-12-24 14:10:25,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 500 transitions. [2023-12-24 14:10:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 14:10:25,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:25,318 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:25,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 14:10:25,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:10:25,523 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:25,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1545272999, now seen corresponding path program 1 times [2023-12-24 14:10:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:25,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646420386] [2023-12-24 14:10:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:25,524 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 14:10:25,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:25,525 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 14:10:25,529 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 14:10:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:25,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 14:10:25,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:25,745 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 8 treesize of output 1 [2023-12-24 14:10:25,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-24 14:10:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:25,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:25,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:25,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646420386] [2023-12-24 14:10:25,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646420386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:25,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:25,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 14:10:25,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467815898] [2023-12-24 14:10:25,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:25,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:10:25,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:25,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:10:25,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:10:25,803 INFO L87 Difference]: Start difference. First operand 388 states and 500 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:26,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:26,035 INFO L93 Difference]: Finished difference Result 779 states and 1025 transitions. [2023-12-24 14:10:26,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 14:10:26,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2023-12-24 14:10:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:26,038 INFO L225 Difference]: With dead ends: 779 [2023-12-24 14:10:26,038 INFO L226 Difference]: Without dead ends: 502 [2023-12-24 14:10:26,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:10:26,042 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 246 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:26,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 676 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:10:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-12-24 14:10:26,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 391. [2023-12-24 14:10:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 308 states have (on average 1.2305194805194806) internal successors, (379), 310 states have internal predecessors, (379), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 14:10:26,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 503 transitions. [2023-12-24 14:10:26,084 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 503 transitions. Word has length 153 [2023-12-24 14:10:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:26,085 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 503 transitions. [2023-12-24 14:10:26,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 503 transitions. [2023-12-24 14:10:26,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 14:10:26,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:26,086 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:26,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 14:10:26,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:10:26,292 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:26,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1554002775, now seen corresponding path program 1 times [2023-12-24 14:10:26,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:26,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796879598] [2023-12-24 14:10:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:26,293 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 14:10:26,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:26,294 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:10:26,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 14:10:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:26,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 14:10:26,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:26,507 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 8 treesize of output 1 [2023-12-24 14:10:26,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-24 14:10:26,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:26,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 47 treesize of output 43 [2023-12-24 14:10:27,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 63 [2023-12-24 14:10:27,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 14:10:27,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:27,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 105 [2023-12-24 14:10:27,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2023-12-24 14:10:28,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:28,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 135 treesize of output 63 [2023-12-24 14:10:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 290 proven. 96 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-12-24 14:10:28,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 96 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2023-12-24 14:10:28,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:28,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796879598] [2023-12-24 14:10:28,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796879598] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:10:28,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:10:28,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 18 [2023-12-24 14:10:28,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803300263] [2023-12-24 14:10:28,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:10:28,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 14:10:28,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:28,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 14:10:28,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-12-24 14:10:28,362 INFO L87 Difference]: Start difference. First operand 391 states and 503 transitions. Second operand has 18 states, 14 states have (on average 8.214285714285714) internal successors, (115), 17 states have internal predecessors, (115), 8 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 5 states have call predecessors, (38), 8 states have call successors, (38) [2023-12-24 14:10:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:29,204 INFO L93 Difference]: Finished difference Result 715 states and 906 transitions. [2023-12-24 14:10:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 14:10:29,205 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 8.214285714285714) internal successors, (115), 17 states have internal predecessors, (115), 8 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 5 states have call predecessors, (38), 8 states have call successors, (38) Word has length 155 [2023-12-24 14:10:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:29,207 INFO L225 Difference]: With dead ends: 715 [2023-12-24 14:10:29,207 INFO L226 Difference]: Without dead ends: 435 [2023-12-24 14:10:29,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2023-12-24 14:10:29,208 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 245 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:29,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 550 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:10:29,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-12-24 14:10:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 407. [2023-12-24 14:10:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 320 states have (on average 1.2125) internal successors, (388), 322 states have internal predecessors, (388), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 14:10:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 512 transitions. [2023-12-24 14:10:29,258 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 512 transitions. Word has length 155 [2023-12-24 14:10:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:29,259 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 512 transitions. [2023-12-24 14:10:29,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 8.214285714285714) internal successors, (115), 17 states have internal predecessors, (115), 8 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 5 states have call predecessors, (38), 8 states have call successors, (38) [2023-12-24 14:10:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 512 transitions. [2023-12-24 14:10:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 14:10:29,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:29,260 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:29,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 14:10:29,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:10:29,465 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:29,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:29,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1947029785, now seen corresponding path program 1 times [2023-12-24 14:10:29,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:29,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366433742] [2023-12-24 14:10:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:29,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:10:29,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:29,468 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 14:10:29,473 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 14:10:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:29,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 14:10:29,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:29,653 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 8 treesize of output 1 [2023-12-24 14:10:29,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 14:10:29,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 14:10:29,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:10:30,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:30,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 36 [2023-12-24 14:10:30,204 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:30,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 33 [2023-12-24 14:10:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 317 proven. 54 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2023-12-24 14:10:30,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:30,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:30,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366433742] [2023-12-24 14:10:30,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366433742] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:10:30,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:10:30,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 19 [2023-12-24 14:10:30,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467581049] [2023-12-24 14:10:30,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:30,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:10:30,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:30,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:10:30,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-24 14:10:30,622 INFO L87 Difference]: Start difference. First operand 407 states and 512 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:30,994 INFO L93 Difference]: Finished difference Result 756 states and 956 transitions. [2023-12-24 14:10:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:10:30,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2023-12-24 14:10:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:30,997 INFO L225 Difference]: With dead ends: 756 [2023-12-24 14:10:30,997 INFO L226 Difference]: Without dead ends: 464 [2023-12-24 14:10:30,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2023-12-24 14:10:30,999 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 127 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:30,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1030 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:10:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-12-24 14:10:31,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 436. [2023-12-24 14:10:31,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 349 states have (on average 1.2148997134670487) internal successors, (424), 351 states have internal predecessors, (424), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 14:10:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 548 transitions. [2023-12-24 14:10:31,038 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 548 transitions. Word has length 155 [2023-12-24 14:10:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:31,038 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 548 transitions. [2023-12-24 14:10:31,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 548 transitions. [2023-12-24 14:10:31,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 14:10:31,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:31,039 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:31,046 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 14:10:31,244 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 14:10:31,244 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:31,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:31,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1705467200, now seen corresponding path program 1 times [2023-12-24 14:10:31,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:31,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399865244] [2023-12-24 14:10:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:31,245 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 14:10:31,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:31,246 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 14:10:31,279 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 14:10:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:31,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 14:10:31,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:31,433 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 14:10:31,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2023-12-24 14:10:31,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 14:10:31,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 67 [2023-12-24 14:10:31,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 20 [2023-12-24 14:10:32,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:32,076 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 74 treesize of output 32 [2023-12-24 14:10:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 399 proven. 36 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 14:10:32,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:32,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:32,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399865244] [2023-12-24 14:10:32,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399865244] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:10:32,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:10:32,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-12-24 14:10:32,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310888835] [2023-12-24 14:10:32,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:32,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:10:32,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:32,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:10:32,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:10:32,192 INFO L87 Difference]: Start difference. First operand 436 states and 548 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:32,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:32,319 INFO L93 Difference]: Finished difference Result 840 states and 1061 transitions. [2023-12-24 14:10:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:10:32,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2023-12-24 14:10:32,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:32,321 INFO L225 Difference]: With dead ends: 840 [2023-12-24 14:10:32,321 INFO L226 Difference]: Without dead ends: 525 [2023-12-24 14:10:32,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:10:32,322 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 85 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:32,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 555 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:10:32,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-12-24 14:10:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 436. [2023-12-24 14:10:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 349 states have (on average 1.2120343839541547) internal successors, (423), 351 states have internal predecessors, (423), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 14:10:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 547 transitions. [2023-12-24 14:10:32,361 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 547 transitions. Word has length 155 [2023-12-24 14:10:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:32,361 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 547 transitions. [2023-12-24 14:10:32,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 547 transitions. [2023-12-24 14:10:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 14:10:32,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:32,362 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:32,367 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 14:10:32,566 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 14:10:32,567 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:32,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:32,567 INFO L85 PathProgramCache]: Analyzing trace with hash -465960180, now seen corresponding path program 1 times [2023-12-24 14:10:32,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:32,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153804498] [2023-12-24 14:10:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:32,567 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 14:10:32,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:32,569 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 14:10:32,570 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 14:10:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:32,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 14:10:32,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:32,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 9 [2023-12-24 14:10:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:32,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:32,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153804498] [2023-12-24 14:10:32,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153804498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:32,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:32,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 14:10:32,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081316211] [2023-12-24 14:10:32,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:32,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 14:10:32,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:32,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 14:10:32,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 14:10:32,872 INFO L87 Difference]: Start difference. First operand 436 states and 547 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:33,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:33,086 INFO L93 Difference]: Finished difference Result 924 states and 1177 transitions. [2023-12-24 14:10:33,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 14:10:33,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2023-12-24 14:10:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:33,088 INFO L225 Difference]: With dead ends: 924 [2023-12-24 14:10:33,088 INFO L226 Difference]: Without dead ends: 609 [2023-12-24 14:10:33,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 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 14:10:33,089 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 105 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:33,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 390 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:10:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-12-24 14:10:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 496. [2023-12-24 14:10:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 409 states have (on average 1.2396088019559903) internal successors, (507), 411 states have internal predecessors, (507), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 14:10:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 631 transitions. [2023-12-24 14:10:33,128 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 631 transitions. Word has length 155 [2023-12-24 14:10:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:33,129 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 631 transitions. [2023-12-24 14:10:33,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 631 transitions. [2023-12-24 14:10:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 14:10:33,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:33,130 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:33,136 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 (18)] Ended with exit code 0 [2023-12-24 14:10:33,334 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 14:10:33,334 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:33,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1052766194, now seen corresponding path program 1 times [2023-12-24 14:10:33,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:33,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199969290] [2023-12-24 14:10:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:33,335 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 14:10:33,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:33,336 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 14:10:33,337 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 14:10:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:33,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 14:10:33,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:33,524 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 8 treesize of output 1 [2023-12-24 14:10:33,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-24 14:10:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:33,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:33,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:33,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199969290] [2023-12-24 14:10:33,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199969290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:33,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:33,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 14:10:33,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923013484] [2023-12-24 14:10:33,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:33,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:10:33,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:33,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:10:33,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-24 14:10:33,596 INFO L87 Difference]: Start difference. First operand 496 states and 631 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:33,939 INFO L93 Difference]: Finished difference Result 993 states and 1274 transitions. [2023-12-24 14:10:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 14:10:33,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2023-12-24 14:10:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:33,942 INFO L225 Difference]: With dead ends: 993 [2023-12-24 14:10:33,942 INFO L226 Difference]: Without dead ends: 622 [2023-12-24 14:10:33,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-24 14:10:33,943 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 229 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:33,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 798 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:10:33,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-12-24 14:10:33,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 480. [2023-12-24 14:10:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 393 states have (on average 1.2391857506361323) internal successors, (487), 395 states have internal predecessors, (487), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 14:10:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 611 transitions. [2023-12-24 14:10:33,988 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 611 transitions. Word has length 155 [2023-12-24 14:10:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:33,988 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 611 transitions. [2023-12-24 14:10:33,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 611 transitions. [2023-12-24 14:10:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 14:10:33,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:33,989 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:33,996 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 14:10:34,193 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 14:10:34,194 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:34,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:34,195 INFO L85 PathProgramCache]: Analyzing trace with hash -775784706, now seen corresponding path program 1 times [2023-12-24 14:10:34,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:34,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189539997] [2023-12-24 14:10:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:34,195 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 14:10:34,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:34,196 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 14:10:34,198 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 14:10:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:34,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 14:10:34,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:34,440 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 8 treesize of output 1 [2023-12-24 14:10:34,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 14:10:34,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:10:34,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:34,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 36 [2023-12-24 14:10:35,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:35,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2023-12-24 14:10:35,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:35,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 22 [2023-12-24 14:10:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 333 proven. 54 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2023-12-24 14:10:35,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-24 14:10:35,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:35,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189539997] [2023-12-24 14:10:35,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189539997] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:10:35,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:10:35,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2023-12-24 14:10:35,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865195506] [2023-12-24 14:10:35,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:10:35,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 14:10:35,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:35,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 14:10:35,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-12-24 14:10:35,513 INFO L87 Difference]: Start difference. First operand 480 states and 611 transitions. Second operand has 17 states, 15 states have (on average 6.933333333333334) internal successors, (104), 17 states have internal predecessors, (104), 6 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (39), 4 states have call predecessors, (39), 6 states have call successors, (39) [2023-12-24 14:10:37,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:37,044 INFO L93 Difference]: Finished difference Result 890 states and 1130 transitions. [2023-12-24 14:10:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-24 14:10:37,045 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.933333333333334) internal successors, (104), 17 states have internal predecessors, (104), 6 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (39), 4 states have call predecessors, (39), 6 states have call successors, (39) Word has length 155 [2023-12-24 14:10:37,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:37,046 INFO L225 Difference]: With dead ends: 890 [2023-12-24 14:10:37,046 INFO L226 Difference]: Without dead ends: 529 [2023-12-24 14:10:37,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=409, Invalid=1571, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 14:10:37,048 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 277 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:37,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1329 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 14:10:37,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-12-24 14:10:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 461. [2023-12-24 14:10:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 367 states have (on average 1.2179836512261581) internal successors, (447), 369 states have internal predecessors, (447), 68 states have call successors, (68), 25 states have call predecessors, (68), 25 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-24 14:10:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 583 transitions. [2023-12-24 14:10:37,126 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 583 transitions. Word has length 155 [2023-12-24 14:10:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:37,134 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 583 transitions. [2023-12-24 14:10:37,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.933333333333334) internal successors, (104), 17 states have internal predecessors, (104), 6 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (39), 4 states have call predecessors, (39), 6 states have call successors, (39) [2023-12-24 14:10:37,134 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 583 transitions. [2023-12-24 14:10:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:10:37,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:37,135 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:37,142 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 14:10:37,340 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 14:10:37,340 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:37,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash -537483444, now seen corresponding path program 1 times [2023-12-24 14:10:37,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:37,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142294245] [2023-12-24 14:10:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:37,341 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 14:10:37,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:37,342 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 14:10:37,343 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 14:10:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:37,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 14:10:37,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:37,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:10:37,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2023-12-24 14:10:37,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:37,862 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 51 treesize of output 25 [2023-12-24 14:10:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:37,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:37,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:37,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142294245] [2023-12-24 14:10:37,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142294245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:37,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:37,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-24 14:10:37,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87072965] [2023-12-24 14:10:37,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:37,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 14:10:37,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:37,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 14:10:37,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-24 14:10:37,905 INFO L87 Difference]: Start difference. First operand 461 states and 583 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:39,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:39,371 INFO L93 Difference]: Finished difference Result 1622 states and 2091 transitions. [2023-12-24 14:10:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 14:10:39,372 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-24 14:10:39,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:39,375 INFO L225 Difference]: With dead ends: 1622 [2023-12-24 14:10:39,375 INFO L226 Difference]: Without dead ends: 1280 [2023-12-24 14:10:39,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=299, Invalid=1033, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 14:10:39,376 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 666 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:39,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1312 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 14:10:39,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2023-12-24 14:10:39,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 798. [2023-12-24 14:10:39,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 639 states have (on average 1.2128325508607198) internal successors, (775), 643 states have internal predecessors, (775), 114 states have call successors, (114), 44 states have call predecessors, (114), 44 states have return successors, (114), 110 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-24 14:10:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1003 transitions. [2023-12-24 14:10:39,473 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1003 transitions. Word has length 157 [2023-12-24 14:10:39,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:39,473 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1003 transitions. [2023-12-24 14:10:39,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:39,473 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1003 transitions. [2023-12-24 14:10:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:10:39,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:39,474 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:39,482 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 14:10:39,679 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 14:10:39,679 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:39,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:39,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1237523918, now seen corresponding path program 1 times [2023-12-24 14:10:39,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:39,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596427766] [2023-12-24 14:10:39,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:39,680 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 14:10:39,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:39,681 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 14:10:39,682 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 14:10:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:39,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 14:10:39,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:40,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 14:10:40,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:40,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 33 treesize of output 35 [2023-12-24 14:10:40,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:40,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 48 [2023-12-24 14:10:40,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:40,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 51 [2023-12-24 14:10:41,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:41,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 70 [2023-12-24 14:10:41,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:41,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 39 [2023-12-24 14:10:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 14:10:41,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:41,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:41,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596427766] [2023-12-24 14:10:41,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596427766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:41,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:41,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-24 14:10:41,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923957673] [2023-12-24 14:10:41,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:41,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 14:10:41,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:41,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 14:10:41,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:10:41,433 INFO L87 Difference]: Start difference. First operand 798 states and 1003 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 14:10:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:43,067 INFO L93 Difference]: Finished difference Result 1674 states and 2088 transitions. [2023-12-24 14:10:43,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 14:10:43,068 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 157 [2023-12-24 14:10:43,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:43,070 INFO L225 Difference]: With dead ends: 1674 [2023-12-24 14:10:43,070 INFO L226 Difference]: Without dead ends: 1030 [2023-12-24 14:10:43,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-12-24 14:10:43,072 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 256 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:43,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 999 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 14:10:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2023-12-24 14:10:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 983. [2023-12-24 14:10:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 785 states have (on average 1.194904458598726) internal successors, (938), 792 states have internal predecessors, (938), 138 states have call successors, (138), 59 states have call predecessors, (138), 59 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-24 14:10:43,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1214 transitions. [2023-12-24 14:10:43,178 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1214 transitions. Word has length 157 [2023-12-24 14:10:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:43,178 INFO L495 AbstractCegarLoop]: Abstraction has 983 states and 1214 transitions. [2023-12-24 14:10:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 14:10:43,179 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1214 transitions. [2023-12-24 14:10:43,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:10:43,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:43,179 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:43,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 14:10:43,384 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 14:10:43,385 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:43,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash -396934834, now seen corresponding path program 1 times [2023-12-24 14:10:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366178186] [2023-12-24 14:10:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:43,385 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 14:10:43,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:43,386 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 14:10:43,388 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 14:10:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:43,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 14:10:43,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:43,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2023-12-24 14:10:43,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2023-12-24 14:10:43,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2023-12-24 14:10:43,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 14:10:44,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:44,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 45 [2023-12-24 14:10:44,455 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:44,455 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 67 treesize of output 31 [2023-12-24 14:10:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 14:10:44,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:44,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:44,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366178186] [2023-12-24 14:10:44,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366178186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:44,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:44,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 14:10:44,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665762096] [2023-12-24 14:10:44,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:44,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 14:10:44,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:44,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 14:10:44,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:10:44,501 INFO L87 Difference]: Start difference. First operand 983 states and 1214 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 14:10:45,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:45,552 INFO L93 Difference]: Finished difference Result 1563 states and 1941 transitions. [2023-12-24 14:10:45,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 14:10:45,552 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 157 [2023-12-24 14:10:45,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:45,556 INFO L225 Difference]: With dead ends: 1563 [2023-12-24 14:10:45,556 INFO L226 Difference]: Without dead ends: 1221 [2023-12-24 14:10:45,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:10:45,573 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 284 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:45,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 809 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 14:10:45,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2023-12-24 14:10:45,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1170. [2023-12-24 14:10:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 933 states have (on average 1.189710610932476) internal successors, (1110), 943 states have internal predecessors, (1110), 162 states have call successors, (162), 74 states have call predecessors, (162), 74 states have return successors, (162), 152 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-24 14:10:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1434 transitions. [2023-12-24 14:10:45,716 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1434 transitions. Word has length 157 [2023-12-24 14:10:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:45,716 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1434 transitions. [2023-12-24 14:10:45,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 14:10:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1434 transitions. [2023-12-24 14:10:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:10:45,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:45,717 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:45,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 14:10:45,922 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 14:10:45,922 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:45,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1378072528, now seen corresponding path program 1 times [2023-12-24 14:10:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:45,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593763352] [2023-12-24 14:10:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:45,923 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 14:10:45,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:45,924 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 14:10:45,926 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 14:10:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:46,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 14:10:46,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:46,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 14:10:46,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:46,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 34 [2023-12-24 14:10:46,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:46,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 34 [2023-12-24 14:10:46,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:46,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 34 [2023-12-24 14:10:47,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:47,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 57 [2023-12-24 14:10:47,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:47,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 45 [2023-12-24 14:10:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 395 proven. 33 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-24 14:10:47,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:48,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593763352] [2023-12-24 14:10:48,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593763352] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:10:48,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:10:48,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2023-12-24 14:10:48,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228395856] [2023-12-24 14:10:48,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:48,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:10:48,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:48,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:10:48,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2023-12-24 14:10:48,073 INFO L87 Difference]: Start difference. First operand 1170 states and 1434 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:48,734 INFO L93 Difference]: Finished difference Result 1934 states and 2380 transitions. [2023-12-24 14:10:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:10:48,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-24 14:10:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:48,739 INFO L225 Difference]: With dead ends: 1934 [2023-12-24 14:10:48,739 INFO L226 Difference]: Without dead ends: 1475 [2023-12-24 14:10:48,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 288 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2023-12-24 14:10:48,740 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 120 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:48,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1208 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:10:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2023-12-24 14:10:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1289. [2023-12-24 14:10:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1052 states have (on average 1.2024714828897338) internal successors, (1265), 1062 states have internal predecessors, (1265), 162 states have call successors, (162), 74 states have call predecessors, (162), 74 states have return successors, (162), 152 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-24 14:10:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1589 transitions. [2023-12-24 14:10:48,909 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1589 transitions. Word has length 157 [2023-12-24 14:10:48,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:48,910 INFO L495 AbstractCegarLoop]: Abstraction has 1289 states and 1589 transitions. [2023-12-24 14:10:48,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1589 transitions. [2023-12-24 14:10:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:10:48,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:48,911 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:48,918 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 14:10:49,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:10:49,116 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:49,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:49,117 INFO L85 PathProgramCache]: Analyzing trace with hash -741785671, now seen corresponding path program 1 times [2023-12-24 14:10:49,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:49,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470896209] [2023-12-24 14:10:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:49,117 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 14:10:49,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:49,118 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:10:49,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 14:10:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:49,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:10:49,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:49,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 10 [2023-12-24 14:10:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:49,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:49,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:49,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470896209] [2023-12-24 14:10:49,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470896209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:49,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:49,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:10:49,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431235740] [2023-12-24 14:10:49,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:49,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:10:49,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:49,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:10:49,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:10:49,320 INFO L87 Difference]: Start difference. First operand 1289 states and 1589 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:49,994 INFO L93 Difference]: Finished difference Result 2441 states and 3024 transitions. [2023-12-24 14:10:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:10:49,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-24 14:10:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:49,998 INFO L225 Difference]: With dead ends: 2441 [2023-12-24 14:10:49,998 INFO L226 Difference]: Without dead ends: 1360 [2023-12-24 14:10:50,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:10:50,001 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 171 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:50,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 728 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 14:10:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2023-12-24 14:10:50,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1289. [2023-12-24 14:10:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1052 states have (on average 1.1891634980988592) internal successors, (1251), 1062 states have internal predecessors, (1251), 162 states have call successors, (162), 74 states have call predecessors, (162), 74 states have return successors, (162), 152 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-24 14:10:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1575 transitions. [2023-12-24 14:10:50,165 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1575 transitions. Word has length 157 [2023-12-24 14:10:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:50,166 INFO L495 AbstractCegarLoop]: Abstraction has 1289 states and 1575 transitions. [2023-12-24 14:10:50,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:50,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1575 transitions. [2023-12-24 14:10:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:10:50,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:50,167 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:50,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 14:10:50,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:10:50,372 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:50,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:50,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1381488946, now seen corresponding path program 1 times [2023-12-24 14:10:50,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:50,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96466176] [2023-12-24 14:10:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:50,373 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 14:10:50,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:50,374 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 14:10:50,407 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 14:10:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:50,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 14:10:50,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:50,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:10:50,644 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 8 treesize of output 1 [2023-12-24 14:10:50,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-24 14:10:50,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:50,782 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 43 treesize of output 19 [2023-12-24 14:10:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:50,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:10:50,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:50,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96466176] [2023-12-24 14:10:50,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96466176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:10:50,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:10:50,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 14:10:50,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461581418] [2023-12-24 14:10:50,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:50,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:10:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:10:50,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 14:10:50,812 INFO L87 Difference]: Start difference. First operand 1289 states and 1575 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:51,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:51,800 INFO L93 Difference]: Finished difference Result 2558 states and 3177 transitions. [2023-12-24 14:10:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:10:51,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-24 14:10:51,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:51,809 INFO L225 Difference]: With dead ends: 2558 [2023-12-24 14:10:51,809 INFO L226 Difference]: Without dead ends: 1959 [2023-12-24 14:10:51,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-12-24 14:10:51,810 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 264 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:51,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1003 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 14:10:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2023-12-24 14:10:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1360. [2023-12-24 14:10:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1123 states have (on average 1.1896705253784505) internal successors, (1336), 1133 states have internal predecessors, (1336), 162 states have call successors, (162), 74 states have call predecessors, (162), 74 states have return successors, (162), 152 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-24 14:10:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1660 transitions. [2023-12-24 14:10:51,956 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1660 transitions. Word has length 157 [2023-12-24 14:10:51,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:51,956 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 1660 transitions. [2023-12-24 14:10:51,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:51,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1660 transitions. [2023-12-24 14:10:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:10:51,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:51,957 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:51,965 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 14:10:52,163 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 14:10:52,163 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:52,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:52,163 INFO L85 PathProgramCache]: Analyzing trace with hash 919333644, now seen corresponding path program 1 times [2023-12-24 14:10:52,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:52,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788536670] [2023-12-24 14:10:52,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:52,164 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 14:10:52,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:52,165 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 14:10:52,165 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 14:10:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:52,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 14:10:52,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:52,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:10:52,517 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 1 [2023-12-24 14:10:52,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:52,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 58 treesize of output 48 [2023-12-24 14:10:53,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:53,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 38 [2023-12-24 14:10:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 334 proven. 24 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-12-24 14:10:53,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:53,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:53,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788536670] [2023-12-24 14:10:53,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788536670] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:10:53,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:10:53,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22] total 29 [2023-12-24 14:10:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406424244] [2023-12-24 14:10:53,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:53,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:10:53,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:53,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:10:53,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-12-24 14:10:53,743 INFO L87 Difference]: Start difference. First operand 1360 states and 1660 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:54,954 INFO L93 Difference]: Finished difference Result 2832 states and 3473 transitions. [2023-12-24 14:10:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 14:10:54,955 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-24 14:10:54,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:54,961 INFO L225 Difference]: With dead ends: 2832 [2023-12-24 14:10:54,961 INFO L226 Difference]: Without dead ends: 2233 [2023-12-24 14:10:54,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 14:10:54,962 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 374 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:54,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1125 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 14:10:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2023-12-24 14:10:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 1647. [2023-12-24 14:10:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1344 states have (on average 1.1852678571428572) internal successors, (1593), 1357 states have internal predecessors, (1593), 208 states have call successors, (208), 94 states have call predecessors, (208), 94 states have return successors, (208), 195 states have call predecessors, (208), 208 states have call successors, (208) [2023-12-24 14:10:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2009 transitions. [2023-12-24 14:10:55,212 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2009 transitions. Word has length 157 [2023-12-24 14:10:55,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:55,212 INFO L495 AbstractCegarLoop]: Abstraction has 1647 states and 2009 transitions. [2023-12-24 14:10:55,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:55,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2009 transitions. [2023-12-24 14:10:55,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:10:55,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:55,213 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:55,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 14:10:55,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:10:55,418 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:55,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:55,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1600626290, now seen corresponding path program 1 times [2023-12-24 14:10:55,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:55,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229385087] [2023-12-24 14:10:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:55,419 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 14:10:55,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:55,421 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:10:55,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 14:10:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:55,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 14:10:55,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:10:55,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 14:10:55,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:55,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 38 treesize of output 25 [2023-12-24 14:10:55,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:55,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 38 treesize of output 25 [2023-12-24 14:10:56,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2023-12-24 14:10:57,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:57,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 67 [2023-12-24 14:10:57,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:10:57,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 43 [2023-12-24 14:10:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 540 proven. 24 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-24 14:10:57,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:10:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:10:58,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:10:58,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229385087] [2023-12-24 14:10:58,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229385087] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:10:58,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:10:58,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22] total 28 [2023-12-24 14:10:58,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896324374] [2023-12-24 14:10:58,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:10:58,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:10:58,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:10:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:10:58,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2023-12-24 14:10:58,426 INFO L87 Difference]: Start difference. First operand 1647 states and 2009 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:59,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:10:59,240 INFO L93 Difference]: Finished difference Result 3341 states and 4088 transitions. [2023-12-24 14:10:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:10:59,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-24 14:10:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:10:59,255 INFO L225 Difference]: With dead ends: 3341 [2023-12-24 14:10:59,255 INFO L226 Difference]: Without dead ends: 2162 [2023-12-24 14:10:59,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2023-12-24 14:10:59,257 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 258 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:10:59,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 749 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:10:59,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2023-12-24 14:10:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 1413. [2023-12-24 14:10:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1171 states have (on average 1.1912894961571308) internal successors, (1395), 1179 states have internal predecessors, (1395), 164 states have call successors, (164), 77 states have call predecessors, (164), 77 states have return successors, (164), 156 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-24 14:10:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1723 transitions. [2023-12-24 14:10:59,413 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1723 transitions. Word has length 157 [2023-12-24 14:10:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:10:59,413 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 1723 transitions. [2023-12-24 14:10:59,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:10:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1723 transitions. [2023-12-24 14:10:59,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:10:59,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:10:59,415 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:10:59,420 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 (28)] Forceful destruction successful, exit code 0 [2023-12-24 14:10:59,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:10:59,620 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:10:59,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:10:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1059882254, now seen corresponding path program 1 times [2023-12-24 14:10:59,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:10:59,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287982208] [2023-12-24 14:10:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:10:59,621 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 14:10:59,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:10:59,622 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 14:10:59,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 14:10:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:10:59,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 14:10:59,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:00,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2023-12-24 14:11:00,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2023-12-24 14:11:00,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2023-12-24 14:11:00,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 14:11:01,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:01,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 67 [2023-12-24 14:11:01,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:01,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 44 [2023-12-24 14:11:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 348 proven. 24 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-12-24 14:11:01,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:11:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:01,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:01,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287982208] [2023-12-24 14:11:01,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287982208] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:11:01,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:11:01,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [20] total 24 [2023-12-24 14:11:01,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426718706] [2023-12-24 14:11:01,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:01,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:11:01,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:01,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:11:01,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2023-12-24 14:11:01,976 INFO L87 Difference]: Start difference. First operand 1413 states and 1723 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:02,419 INFO L93 Difference]: Finished difference Result 2331 states and 2850 transitions. [2023-12-24 14:11:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:11:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-24 14:11:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:02,424 INFO L225 Difference]: With dead ends: 2331 [2023-12-24 14:11:02,425 INFO L226 Difference]: Without dead ends: 1552 [2023-12-24 14:11:02,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2023-12-24 14:11:02,426 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 151 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:02,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 515 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:11:02,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2023-12-24 14:11:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1361. [2023-12-24 14:11:02,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1119 states have (on average 1.1858802502234138) internal successors, (1327), 1127 states have internal predecessors, (1327), 164 states have call successors, (164), 77 states have call predecessors, (164), 77 states have return successors, (164), 156 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-24 14:11:02,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1655 transitions. [2023-12-24 14:11:02,568 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1655 transitions. Word has length 157 [2023-12-24 14:11:02,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:02,569 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1655 transitions. [2023-12-24 14:11:02,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:02,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1655 transitions. [2023-12-24 14:11:02,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 14:11:02,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:02,570 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:02,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 14:11:02,775 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 14:11:02,775 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:02,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash -302479244, now seen corresponding path program 1 times [2023-12-24 14:11:02,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:02,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565823911] [2023-12-24 14:11:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:02,776 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 14:11:02,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:02,777 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 14:11:02,778 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 14:11:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:02,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 14:11:03,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:03,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:11:03,087 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 8 treesize of output 1 [2023-12-24 14:11:03,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 14:11:03,227 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 25 treesize of output 13 [2023-12-24 14:11:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:03,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:11:03,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:03,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565823911] [2023-12-24 14:11:03,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565823911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:11:03,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:11:03,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 14:11:03,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933134203] [2023-12-24 14:11:03,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:03,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:11:03,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:03,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:11:03,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 14:11:03,251 INFO L87 Difference]: Start difference. First operand 1361 states and 1655 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:04,196 INFO L93 Difference]: Finished difference Result 2899 states and 3560 transitions. [2023-12-24 14:11:04,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:11:04,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-24 14:11:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:04,202 INFO L225 Difference]: With dead ends: 2899 [2023-12-24 14:11:04,203 INFO L226 Difference]: Without dead ends: 2123 [2023-12-24 14:11:04,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-24 14:11:04,205 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 282 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:04,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 937 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 14:11:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2023-12-24 14:11:04,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 1367. [2023-12-24 14:11:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1124 states have (on average 1.1859430604982206) internal successors, (1333), 1132 states have internal predecessors, (1333), 164 states have call successors, (164), 78 states have call predecessors, (164), 78 states have return successors, (164), 156 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-24 14:11:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1661 transitions. [2023-12-24 14:11:04,367 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1661 transitions. Word has length 158 [2023-12-24 14:11:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:04,367 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 1661 transitions. [2023-12-24 14:11:04,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1661 transitions. [2023-12-24 14:11:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 14:11:04,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:04,369 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:04,374 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 14:11:04,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:11:04,574 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:04,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -696846030, now seen corresponding path program 1 times [2023-12-24 14:11:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:04,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325037033] [2023-12-24 14:11:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:04,575 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 14:11:04,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:04,576 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:11:04,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 14:11:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:04,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 14:11:04,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:04,837 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 17 treesize of output 9 [2023-12-24 14:11:04,919 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 8 treesize of output 1 [2023-12-24 14:11:04,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-12-24 14:11:05,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:05,105 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 51 treesize of output 25 [2023-12-24 14:11:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:05,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:11:05,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:05,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325037033] [2023-12-24 14:11:05,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325037033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:11:05,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:11:05,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 14:11:05,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497585844] [2023-12-24 14:11:05,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:05,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 14:11:05,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:05,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 14:11:05,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:11:05,150 INFO L87 Difference]: Start difference. First operand 1367 states and 1661 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:06,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:06,451 INFO L93 Difference]: Finished difference Result 3227 states and 3970 transitions. [2023-12-24 14:11:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 14:11:06,452 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-24 14:11:06,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:06,458 INFO L225 Difference]: With dead ends: 3227 [2023-12-24 14:11:06,458 INFO L226 Difference]: Without dead ends: 2451 [2023-12-24 14:11:06,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2023-12-24 14:11:06,460 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 524 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:06,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1113 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 14:11:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2023-12-24 14:11:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 1901. [2023-12-24 14:11:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1901 states, 1562 states have (on average 1.1850192061459668) internal successors, (1851), 1572 states have internal predecessors, (1851), 228 states have call successors, (228), 110 states have call predecessors, (228), 110 states have return successors, (228), 218 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-24 14:11:06,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 2307 transitions. [2023-12-24 14:11:06,684 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 2307 transitions. Word has length 158 [2023-12-24 14:11:06,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:06,684 INFO L495 AbstractCegarLoop]: Abstraction has 1901 states and 2307 transitions. [2023-12-24 14:11:06,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:06,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 2307 transitions. [2023-12-24 14:11:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 14:11:06,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:06,685 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:06,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-12-24 14:11:06,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:11:06,888 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:06,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1078161332, now seen corresponding path program 1 times [2023-12-24 14:11:06,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:06,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681373368] [2023-12-24 14:11:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:06,889 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 14:11:06,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:06,890 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 14:11:06,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 14:11:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:07,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 14:11:07,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:07,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 14:11:07,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:07,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 38 treesize of output 25 [2023-12-24 14:11:07,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:07,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 33 treesize of output 35 [2023-12-24 14:11:07,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:07,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 38 [2023-12-24 14:11:08,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:08,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 49 [2023-12-24 14:11:08,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:08,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 35 [2023-12-24 14:11:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-24 14:11:08,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:11:08,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:08,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681373368] [2023-12-24 14:11:08,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681373368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:11:08,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:11:08,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 14:11:08,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260526379] [2023-12-24 14:11:08,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:08,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 14:11:08,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 14:11:08,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:11:08,396 INFO L87 Difference]: Start difference. First operand 1901 states and 2307 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-24 14:11:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:10,124 INFO L93 Difference]: Finished difference Result 3493 states and 4254 transitions. [2023-12-24 14:11:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:11:10,125 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 158 [2023-12-24 14:11:10,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:10,144 INFO L225 Difference]: With dead ends: 3493 [2023-12-24 14:11:10,144 INFO L226 Difference]: Without dead ends: 2440 [2023-12-24 14:11:10,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:11:10,147 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 278 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:10,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 707 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 14:11:10,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2023-12-24 14:11:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 1976. [2023-12-24 14:11:10,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1637 states have (on average 1.1881490531459988) internal successors, (1945), 1647 states have internal predecessors, (1945), 228 states have call successors, (228), 110 states have call predecessors, (228), 110 states have return successors, (228), 218 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-24 14:11:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2401 transitions. [2023-12-24 14:11:10,372 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2401 transitions. Word has length 158 [2023-12-24 14:11:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:10,372 INFO L495 AbstractCegarLoop]: Abstraction has 1976 states and 2401 transitions. [2023-12-24 14:11:10,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-24 14:11:10,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2401 transitions. [2023-12-24 14:11:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 14:11:10,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:10,373 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:10,378 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 (32)] Ended with exit code 0 [2023-12-24 14:11:10,578 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 14:11:10,578 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:10,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:10,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1648432006, now seen corresponding path program 1 times [2023-12-24 14:11:10,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:10,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348045442] [2023-12-24 14:11:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:10,579 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 14:11:10,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:10,580 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 14:11:10,581 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 14:11:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:10,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 14:11:10,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:10,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:11:10,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:10,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348045442] [2023-12-24 14:11:10,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348045442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:11:10,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:11:10,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:11:10,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61881912] [2023-12-24 14:11:10,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:10,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:11:10,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:10,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:11:10,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:11:10,796 INFO L87 Difference]: Start difference. First operand 1976 states and 2401 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:11,055 INFO L93 Difference]: Finished difference Result 2034 states and 2472 transitions. [2023-12-24 14:11:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:11:11,056 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 14:11:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:11,062 INFO L225 Difference]: With dead ends: 2034 [2023-12-24 14:11:11,062 INFO L226 Difference]: Without dead ends: 2032 [2023-12-24 14:11:11,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:11:11,066 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 7 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:11,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 542 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:11:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2023-12-24 14:11:11,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 2018. [2023-12-24 14:11:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1679 states have (on average 1.1834425253126861) internal successors, (1987), 1689 states have internal predecessors, (1987), 228 states have call successors, (228), 110 states have call predecessors, (228), 110 states have return successors, (228), 218 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-24 14:11:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2443 transitions. [2023-12-24 14:11:11,326 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2443 transitions. Word has length 159 [2023-12-24 14:11:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:11,327 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 2443 transitions. [2023-12-24 14:11:11,327 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:11,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2443 transitions. [2023-12-24 14:11:11,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 14:11:11,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:11,328 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:11,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-24 14:11:11,530 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 14:11:11,530 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:11,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:11,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1775367988, now seen corresponding path program 1 times [2023-12-24 14:11:11,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:11,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572307557] [2023-12-24 14:11:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:11,531 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 14:11:11,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:11,532 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 14:11:11,532 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 14:11:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:11,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 14:11:11,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:11,791 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 8 treesize of output 1 [2023-12-24 14:11:11,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 47 [2023-12-24 14:11:11,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 14:11:11,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 69 [2023-12-24 14:11:12,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 24 [2023-12-24 14:11:12,383 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:12,383 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 78 treesize of output 36 [2023-12-24 14:11:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 369 proven. 36 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-12-24 14:11:12,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:11:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:12,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:12,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572307557] [2023-12-24 14:11:12,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572307557] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:11:12,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:11:12,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 14:11:12,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90831089] [2023-12-24 14:11:12,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:12,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:11:12,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:12,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:11:12,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:11:12,534 INFO L87 Difference]: Start difference. First operand 2018 states and 2443 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:12,864 INFO L93 Difference]: Finished difference Result 3820 states and 4619 transitions. [2023-12-24 14:11:12,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:11:12,865 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 14:11:12,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:12,869 INFO L225 Difference]: With dead ends: 3820 [2023-12-24 14:11:12,869 INFO L226 Difference]: Without dead ends: 2124 [2023-12-24 14:11:12,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:11:12,872 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 76 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:12,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 520 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:11:12,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2023-12-24 14:11:13,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 1982. [2023-12-24 14:11:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1643 states have (on average 1.1765063907486306) internal successors, (1933), 1653 states have internal predecessors, (1933), 228 states have call successors, (228), 110 states have call predecessors, (228), 110 states have return successors, (228), 218 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-24 14:11:13,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 2389 transitions. [2023-12-24 14:11:13,106 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 2389 transitions. Word has length 159 [2023-12-24 14:11:13,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:13,106 INFO L495 AbstractCegarLoop]: Abstraction has 1982 states and 2389 transitions. [2023-12-24 14:11:13,106 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:13,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 2389 transitions. [2023-12-24 14:11:13,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 14:11:13,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:13,108 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:13,112 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 14:11:13,312 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 14:11:13,313 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:13,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:13,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2016930573, now seen corresponding path program 1 times [2023-12-24 14:11:13,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:13,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777634509] [2023-12-24 14:11:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:13,314 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 14:11:13,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:13,315 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 14:11:13,348 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 14:11:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:13,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:11:13,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:13,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 14:11:13,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 10 [2023-12-24 14:11:13,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 10 [2023-12-24 14:11:13,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 9 [2023-12-24 14:11:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:13,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:11:13,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:13,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777634509] [2023-12-24 14:11:13,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777634509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:11:13,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:11:13,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 14:11:13,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127781148] [2023-12-24 14:11:13,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:13,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:11:13,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:13,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:11:13,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:11:13,645 INFO L87 Difference]: Start difference. First operand 1982 states and 2389 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:14,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:14,518 INFO L93 Difference]: Finished difference Result 4209 states and 5092 transitions. [2023-12-24 14:11:14,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 14:11:14,519 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 14:11:14,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:14,523 INFO L225 Difference]: With dead ends: 4209 [2023-12-24 14:11:14,523 INFO L226 Difference]: Without dead ends: 2565 [2023-12-24 14:11:14,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-12-24 14:11:14,526 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 317 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:14,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 1485 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 14:11:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2023-12-24 14:11:14,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2039. [2023-12-24 14:11:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 1700 states have (on average 1.1705882352941177) internal successors, (1990), 1710 states have internal predecessors, (1990), 228 states have call successors, (228), 110 states have call predecessors, (228), 110 states have return successors, (228), 218 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-24 14:11:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2446 transitions. [2023-12-24 14:11:14,763 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2446 transitions. Word has length 159 [2023-12-24 14:11:14,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:14,763 INFO L495 AbstractCegarLoop]: Abstraction has 2039 states and 2446 transitions. [2023-12-24 14:11:14,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:14,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2446 transitions. [2023-12-24 14:11:14,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 14:11:14,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:14,765 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:14,788 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 (35)] Forceful destruction successful, exit code 0 [2023-12-24 14:11:14,972 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 14:11:14,972 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:14,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1623903563, now seen corresponding path program 1 times [2023-12-24 14:11:14,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:14,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73079238] [2023-12-24 14:11:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:14,973 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 14:11:14,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:14,982 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 14:11:14,984 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 (36)] Waiting until timeout for monitored process [2023-12-24 14:11:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:15,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 14:11:15,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:15,260 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 14:11:15,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 14:11:15,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 14:11:15,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 14:11:15,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:11:15,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:15,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2023-12-24 14:11:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 93 proven. 54 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2023-12-24 14:11:15,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:11:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:15,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:15,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73079238] [2023-12-24 14:11:15,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73079238] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:11:15,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:11:15,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 18 [2023-12-24 14:11:15,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369622590] [2023-12-24 14:11:15,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:15,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:11:15,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:11:15,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-24 14:11:15,865 INFO L87 Difference]: Start difference. First operand 2039 states and 2446 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:16,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:16,426 INFO L93 Difference]: Finished difference Result 4646 states and 5600 transitions. [2023-12-24 14:11:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 14:11:16,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 14:11:16,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:16,431 INFO L225 Difference]: With dead ends: 4646 [2023-12-24 14:11:16,431 INFO L226 Difference]: Without dead ends: 2955 [2023-12-24 14:11:16,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2023-12-24 14:11:16,433 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 111 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:16,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1279 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:11:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2023-12-24 14:11:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2485. [2023-12-24 14:11:16,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2146 states have (on average 1.1873252562907735) internal successors, (2548), 2156 states have internal predecessors, (2548), 228 states have call successors, (228), 110 states have call predecessors, (228), 110 states have return successors, (228), 218 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-24 14:11:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3004 transitions. [2023-12-24 14:11:16,686 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3004 transitions. Word has length 159 [2023-12-24 14:11:16,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:16,686 INFO L495 AbstractCegarLoop]: Abstraction has 2485 states and 3004 transitions. [2023-12-24 14:11:16,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:16,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3004 transitions. [2023-12-24 14:11:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 14:11:16,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:16,688 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:16,695 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 14:11:16,893 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 14:11:16,893 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:16,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1601271309, now seen corresponding path program 1 times [2023-12-24 14:11:16,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:16,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360192001] [2023-12-24 14:11:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:16,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:11:16,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:16,895 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 14:11:16,896 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 14:11:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:17,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 14:11:17,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:17,182 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 8 treesize of output 1 [2023-12-24 14:11:17,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 14:11:17,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:17,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 47 treesize of output 43 [2023-12-24 14:11:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 309 proven. 42 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2023-12-24 14:11:17,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:11:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:18,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:18,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360192001] [2023-12-24 14:11:18,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360192001] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:11:18,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:11:18,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-12-24 14:11:18,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152144672] [2023-12-24 14:11:18,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:18,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:11:18,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:18,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:11:18,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:11:18,062 INFO L87 Difference]: Start difference. First operand 2485 states and 3004 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:18,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:18,435 INFO L93 Difference]: Finished difference Result 5096 states and 6110 transitions. [2023-12-24 14:11:18,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:11:18,435 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 14:11:18,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:18,439 INFO L225 Difference]: With dead ends: 5096 [2023-12-24 14:11:18,440 INFO L226 Difference]: Without dead ends: 3079 [2023-12-24 14:11:18,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:11:18,442 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 102 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:18,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 482 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:11:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2023-12-24 14:11:18,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 2409. [2023-12-24 14:11:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2070 states have (on average 1.1758454106280194) internal successors, (2434), 2080 states have internal predecessors, (2434), 228 states have call successors, (228), 110 states have call predecessors, (228), 110 states have return successors, (228), 218 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-24 14:11:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 2890 transitions. [2023-12-24 14:11:18,671 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 2890 transitions. Word has length 159 [2023-12-24 14:11:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:18,671 INFO L495 AbstractCegarLoop]: Abstraction has 2409 states and 2890 transitions. [2023-12-24 14:11:18,671 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:18,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 2890 transitions. [2023-12-24 14:11:18,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 14:11:18,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:18,673 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:18,694 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 14:11:18,878 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 14:11:18,878 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:18,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash -2035782016, now seen corresponding path program 1 times [2023-12-24 14:11:18,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:18,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635375274] [2023-12-24 14:11:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:18,879 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 14:11:18,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:18,880 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 14:11:18,913 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 14:11:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:19,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 14:11:19,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:19,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:11:19,246 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 8 treesize of output 1 [2023-12-24 14:11:19,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:19,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 35 [2023-12-24 14:11:19,749 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:19,749 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 55 treesize of output 25 [2023-12-24 14:11:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 327 proven. 15 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-12-24 14:11:19,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:11:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:20,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:20,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635375274] [2023-12-24 14:11:20,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635375274] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:11:20,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:11:20,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 18 [2023-12-24 14:11:20,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275219503] [2023-12-24 14:11:20,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:20,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:11:20,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:11:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-12-24 14:11:20,047 INFO L87 Difference]: Start difference. First operand 2409 states and 2890 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:20,799 INFO L93 Difference]: Finished difference Result 4694 states and 5659 transitions. [2023-12-24 14:11:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 14:11:20,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 14:11:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:20,805 INFO L225 Difference]: With dead ends: 4694 [2023-12-24 14:11:20,806 INFO L226 Difference]: Without dead ends: 3409 [2023-12-24 14:11:20,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-12-24 14:11:20,808 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 276 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:20,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 809 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:11:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2023-12-24 14:11:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 2721. [2023-12-24 14:11:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2366 states have (on average 1.169484361792054) internal successors, (2767), 2377 states have internal predecessors, (2767), 238 states have call successors, (238), 116 states have call predecessors, (238), 116 states have return successors, (238), 227 states have call predecessors, (238), 238 states have call successors, (238) [2023-12-24 14:11:21,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3243 transitions. [2023-12-24 14:11:21,079 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3243 transitions. Word has length 159 [2023-12-24 14:11:21,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:21,079 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 3243 transitions. [2023-12-24 14:11:21,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3243 transitions. [2023-12-24 14:11:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 14:11:21,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:21,081 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:21,087 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 14:11:21,287 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 14:11:21,287 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:21,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:21,287 INFO L85 PathProgramCache]: Analyzing trace with hash -194576730, now seen corresponding path program 1 times [2023-12-24 14:11:21,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:21,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428445268] [2023-12-24 14:11:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:21,288 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 14:11:21,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:21,289 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 14:11:21,323 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 14:11:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:21,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 14:11:21,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:21,569 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 8 treesize of output 1 [2023-12-24 14:11:21,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2023-12-24 14:11:21,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:21,965 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 59 treesize of output 27 [2023-12-24 14:11:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 334 proven. 24 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-12-24 14:11:22,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:11:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:22,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:22,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428445268] [2023-12-24 14:11:22,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428445268] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:11:22,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:11:22,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 20 [2023-12-24 14:11:22,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875521640] [2023-12-24 14:11:22,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:22,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:11:22,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:22,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:11:22,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-12-24 14:11:22,228 INFO L87 Difference]: Start difference. First operand 2721 states and 3243 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:22,935 INFO L93 Difference]: Finished difference Result 4130 states and 4929 transitions. [2023-12-24 14:11:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:11:22,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2023-12-24 14:11:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:22,939 INFO L225 Difference]: With dead ends: 4130 [2023-12-24 14:11:22,939 INFO L226 Difference]: Without dead ends: 2991 [2023-12-24 14:11:22,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2023-12-24 14:11:22,940 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 138 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:22,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 986 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:11:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2023-12-24 14:11:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2790. [2023-12-24 14:11:23,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2414 states have (on average 1.1673570836785419) internal successors, (2818), 2426 states have internal predecessors, (2818), 252 states have call successors, (252), 123 states have call predecessors, (252), 123 states have return successors, (252), 240 states have call predecessors, (252), 252 states have call successors, (252) [2023-12-24 14:11:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3322 transitions. [2023-12-24 14:11:23,218 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3322 transitions. Word has length 160 [2023-12-24 14:11:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:23,218 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 3322 transitions. [2023-12-24 14:11:23,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3322 transitions. [2023-12-24 14:11:23,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 14:11:23,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:23,219 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:23,224 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 14:11:23,424 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 14:11:23,424 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:23,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:23,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1580430632, now seen corresponding path program 1 times [2023-12-24 14:11:23,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:23,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276739671] [2023-12-24 14:11:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:23,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:11:23,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:23,426 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 14:11:23,448 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 14:11:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:23,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 14:11:23,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:23,709 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 14:11:23,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2023-12-24 14:11:23,878 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:23,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 35 treesize of output 37 [2023-12-24 14:11:24,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2023-12-24 14:11:25,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:25,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 67 [2023-12-24 14:11:25,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:25,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 39 [2023-12-24 14:11:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 565 proven. 51 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 14:11:25,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:11:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:26,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:26,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276739671] [2023-12-24 14:11:26,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276739671] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:11:26,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:11:26,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2023-12-24 14:11:26,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491338165] [2023-12-24 14:11:26,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:26,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:11:26,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:11:26,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2023-12-24 14:11:26,223 INFO L87 Difference]: Start difference. First operand 2790 states and 3322 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:26,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:26,730 INFO L93 Difference]: Finished difference Result 4971 states and 5919 transitions. [2023-12-24 14:11:26,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:11:26,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2023-12-24 14:11:26,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:26,754 INFO L225 Difference]: With dead ends: 4971 [2023-12-24 14:11:26,754 INFO L226 Difference]: Without dead ends: 2765 [2023-12-24 14:11:26,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2023-12-24 14:11:26,757 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 71 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:26,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 457 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:11:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2023-12-24 14:11:27,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2528. [2023-12-24 14:11:27,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2152 states have (on average 1.1575278810408922) internal successors, (2491), 2164 states have internal predecessors, (2491), 252 states have call successors, (252), 123 states have call predecessors, (252), 123 states have return successors, (252), 240 states have call predecessors, (252), 252 states have call successors, (252) [2023-12-24 14:11:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 2995 transitions. [2023-12-24 14:11:27,027 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 2995 transitions. Word has length 160 [2023-12-24 14:11:27,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:27,027 INFO L495 AbstractCegarLoop]: Abstraction has 2528 states and 2995 transitions. [2023-12-24 14:11:27,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 2995 transitions. [2023-12-24 14:11:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-24 14:11:27,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:27,029 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:27,037 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 14:11:27,235 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 14:11:27,235 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:27,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:27,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1006444245, now seen corresponding path program 1 times [2023-12-24 14:11:27,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:27,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667269246] [2023-12-24 14:11:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:27,236 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 14:11:27,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:27,237 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 14:11:27,238 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 14:11:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:27,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 14:11:27,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:27,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:27,585 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 35 treesize of output 11 [2023-12-24 14:11:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:27,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:11:27,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:27,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667269246] [2023-12-24 14:11:27,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667269246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:11:27,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:11:27,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:11:27,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749386401] [2023-12-24 14:11:27,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:27,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:11:27,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:27,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:11:27,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:11:27,596 INFO L87 Difference]: Start difference. First operand 2528 states and 2995 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:28,310 INFO L93 Difference]: Finished difference Result 6908 states and 8137 transitions. [2023-12-24 14:11:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:11:28,311 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 161 [2023-12-24 14:11:28,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:28,318 INFO L225 Difference]: With dead ends: 6908 [2023-12-24 14:11:28,319 INFO L226 Difference]: Without dead ends: 4821 [2023-12-24 14:11:28,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:11:28,322 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 91 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:28,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 624 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:11:28,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2023-12-24 14:11:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4817. [2023-12-24 14:11:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4817 states, 4103 states have (on average 1.1440409456495246) internal successors, (4694), 4131 states have internal predecessors, (4694), 476 states have call successors, (476), 237 states have call predecessors, (476), 237 states have return successors, (476), 448 states have call predecessors, (476), 476 states have call successors, (476) [2023-12-24 14:11:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4817 states to 4817 states and 5646 transitions. [2023-12-24 14:11:28,850 INFO L78 Accepts]: Start accepts. Automaton has 4817 states and 5646 transitions. Word has length 161 [2023-12-24 14:11:28,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:28,850 INFO L495 AbstractCegarLoop]: Abstraction has 4817 states and 5646 transitions. [2023-12-24 14:11:28,850 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4817 states and 5646 transitions. [2023-12-24 14:11:28,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 14:11:28,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:28,853 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:28,857 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 14:11:29,057 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 14:11:29,057 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:29,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash -710424436, now seen corresponding path program 1 times [2023-12-24 14:11:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:29,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786415079] [2023-12-24 14:11:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:29,058 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 14:11:29,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:29,060 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 14:11:29,060 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 14:11:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:29,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 14:11:29,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:29,347 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 8 treesize of output 1 [2023-12-24 14:11:29,348 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 1 [2023-12-24 14:11:29,365 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 14:11:29,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 14:11:29,591 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 14:11:29,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:29,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 45 [2023-12-24 14:11:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-24 14:11:29,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:11:29,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786415079] [2023-12-24 14:11:29,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786415079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:11:29,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:11:29,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 14:11:29,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350402269] [2023-12-24 14:11:29,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:29,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:11:29,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:11:29,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-24 14:11:29,883 INFO L87 Difference]: Start difference. First operand 4817 states and 5646 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-24 14:11:31,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:31,374 INFO L93 Difference]: Finished difference Result 6956 states and 8148 transitions. [2023-12-24 14:11:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 14:11:31,375 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 162 [2023-12-24 14:11:31,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:31,383 INFO L225 Difference]: With dead ends: 6956 [2023-12-24 14:11:31,383 INFO L226 Difference]: Without dead ends: 6954 [2023-12-24 14:11:31,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-12-24 14:11:31,385 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 275 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:31,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 892 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 14:11:31,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6954 states. [2023-12-24 14:11:31,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6954 to 6170. [2023-12-24 14:11:31,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6170 states, 5456 states have (on average 1.1603739002932552) internal successors, (6331), 5484 states have internal predecessors, (6331), 476 states have call successors, (476), 237 states have call predecessors, (476), 237 states have return successors, (476), 448 states have call predecessors, (476), 476 states have call successors, (476) [2023-12-24 14:11:31,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 7283 transitions. [2023-12-24 14:11:31,984 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 7283 transitions. Word has length 162 [2023-12-24 14:11:31,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:31,984 INFO L495 AbstractCegarLoop]: Abstraction has 6170 states and 7283 transitions. [2023-12-24 14:11:31,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-24 14:11:31,985 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 7283 transitions. [2023-12-24 14:11:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 14:11:31,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:31,988 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:31,995 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 14:11:32,193 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 14:11:32,193 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:32,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1554429938, now seen corresponding path program 1 times [2023-12-24 14:11:32,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:32,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286494051] [2023-12-24 14:11:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:32,194 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 14:11:32,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:32,195 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 14:11:32,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-24 14:11:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:32,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 14:11:32,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:32,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 14:11:32,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 14:11:32,642 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 14:11:32,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 14:11:32,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:32,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 35 treesize of output 37 [2023-12-24 14:11:32,897 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 14:11:33,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-24 14:11:33,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2023-12-24 14:11:34,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:34,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 78 [2023-12-24 14:11:34,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:34,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 46 [2023-12-24 14:11:34,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:34,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-24 14:11:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 227 proven. 390 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-12-24 14:11:34,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:11:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:35,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:35,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286494051] [2023-12-24 14:11:35,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286494051] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:11:35,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:11:35,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19] total 25 [2023-12-24 14:11:35,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568790436] [2023-12-24 14:11:35,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:35,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:11:35,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:35,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:11:35,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2023-12-24 14:11:35,358 INFO L87 Difference]: Start difference. First operand 6170 states and 7283 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:36,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:36,882 INFO L93 Difference]: Finished difference Result 11913 states and 13970 transitions. [2023-12-24 14:11:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 14:11:36,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-12-24 14:11:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:36,895 INFO L225 Difference]: With dead ends: 11913 [2023-12-24 14:11:36,895 INFO L226 Difference]: Without dead ends: 6874 [2023-12-24 14:11:36,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2023-12-24 14:11:36,901 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 177 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:36,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 767 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 14:11:36,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6874 states. [2023-12-24 14:11:37,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6874 to 6122. [2023-12-24 14:11:37,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 5408 states have (on average 1.1573594674556213) internal successors, (6259), 5436 states have internal predecessors, (6259), 476 states have call successors, (476), 237 states have call predecessors, (476), 237 states have return successors, (476), 448 states have call predecessors, (476), 476 states have call successors, (476) [2023-12-24 14:11:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 7211 transitions. [2023-12-24 14:11:37,466 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 7211 transitions. Word has length 162 [2023-12-24 14:11:37,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:37,466 INFO L495 AbstractCegarLoop]: Abstraction has 6122 states and 7211 transitions. [2023-12-24 14:11:37,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 7211 transitions. [2023-12-24 14:11:37,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 14:11:37,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:37,470 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:37,477 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 14:11:37,675 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 14:11:37,675 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:37,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:37,675 INFO L85 PathProgramCache]: Analyzing trace with hash 532838034, now seen corresponding path program 1 times [2023-12-24 14:11:37,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:37,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118721283] [2023-12-24 14:11:37,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:37,676 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 14:11:37,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:37,677 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 14:11:37,688 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 14:11:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:37,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 14:11:37,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:37,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:11:38,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:38,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 78 treesize of output 62 [2023-12-24 14:11:38,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:38,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 44 [2023-12-24 14:11:38,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-24 14:11:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:38,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:11:38,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:38,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118721283] [2023-12-24 14:11:38,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118721283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:11:38,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:11:38,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-24 14:11:38,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832543462] [2023-12-24 14:11:38,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:38,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 14:11:38,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:38,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 14:11:38,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-12-24 14:11:38,982 INFO L87 Difference]: Start difference. First operand 6122 states and 7211 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:42,766 INFO L93 Difference]: Finished difference Result 11969 states and 13959 transitions. [2023-12-24 14:11:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 14:11:42,767 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-12-24 14:11:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:42,777 INFO L225 Difference]: With dead ends: 11969 [2023-12-24 14:11:42,778 INFO L226 Difference]: Without dead ends: 9212 [2023-12-24 14:11:42,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 14:11:42,781 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 498 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:42,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1716 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 14:11:42,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9212 states. [2023-12-24 14:11:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9212 to 6317. [2023-12-24 14:11:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6317 states, 5603 states have (on average 1.1583080492593254) internal successors, (6490), 5631 states have internal predecessors, (6490), 476 states have call successors, (476), 237 states have call predecessors, (476), 237 states have return successors, (476), 448 states have call predecessors, (476), 476 states have call successors, (476) [2023-12-24 14:11:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 7442 transitions. [2023-12-24 14:11:43,366 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 7442 transitions. Word has length 162 [2023-12-24 14:11:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:43,367 INFO L495 AbstractCegarLoop]: Abstraction has 6317 states and 7442 transitions. [2023-12-24 14:11:43,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:43,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 7442 transitions. [2023-12-24 14:11:43,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 14:11:43,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:43,371 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:43,378 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 (44)] Ended with exit code 0 [2023-12-24 14:11:43,576 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 14:11:43,576 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:43,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:43,576 INFO L85 PathProgramCache]: Analyzing trace with hash -620114546, now seen corresponding path program 1 times [2023-12-24 14:11:43,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:43,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230222135] [2023-12-24 14:11:43,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:43,577 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 14:11:43,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:43,578 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 14:11:43,611 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 14:11:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:43,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 14:11:43,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:43,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:11:44,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-12-24 14:11:44,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:44,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 52 [2023-12-24 14:11:44,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 10 [2023-12-24 14:11:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:45,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:11:45,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:45,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230222135] [2023-12-24 14:11:45,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230222135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:11:45,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:11:45,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-24 14:11:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814922951] [2023-12-24 14:11:45,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:45,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 14:11:45,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:45,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 14:11:45,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-12-24 14:11:45,027 INFO L87 Difference]: Start difference. First operand 6317 states and 7442 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:50,305 INFO L93 Difference]: Finished difference Result 11428 states and 13340 transitions. [2023-12-24 14:11:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 14:11:50,306 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-12-24 14:11:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:50,314 INFO L225 Difference]: With dead ends: 11428 [2023-12-24 14:11:50,315 INFO L226 Difference]: Without dead ends: 8671 [2023-12-24 14:11:50,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2023-12-24 14:11:50,319 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 335 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:50,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1869 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-24 14:11:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2023-12-24 14:11:50,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 6453. [2023-12-24 14:11:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 5739 states have (on average 1.1589127025614219) internal successors, (6651), 5767 states have internal predecessors, (6651), 476 states have call successors, (476), 237 states have call predecessors, (476), 237 states have return successors, (476), 448 states have call predecessors, (476), 476 states have call successors, (476) [2023-12-24 14:11:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 7603 transitions. [2023-12-24 14:11:50,912 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 7603 transitions. Word has length 162 [2023-12-24 14:11:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:50,913 INFO L495 AbstractCegarLoop]: Abstraction has 6453 states and 7603 transitions. [2023-12-24 14:11:50,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:50,913 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 7603 transitions. [2023-12-24 14:11:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 14:11:50,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:50,917 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:50,924 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 14:11:51,122 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 14:11:51,122 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:51,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:51,122 INFO L85 PathProgramCache]: Analyzing trace with hash -95984532, now seen corresponding path program 1 times [2023-12-24 14:11:51,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:51,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922506929] [2023-12-24 14:11:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:51,123 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 14:11:51,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:51,124 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 14:11:51,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-24 14:11:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:51,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 14:11:51,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:51,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:11:51,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-12-24 14:11:52,218 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:52,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 44 [2023-12-24 14:11:52,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 10 [2023-12-24 14:11:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:11:52,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:11:52,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:11:52,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922506929] [2023-12-24 14:11:52,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922506929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:11:52,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:11:52,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-24 14:11:52,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369853197] [2023-12-24 14:11:52,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:11:52,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 14:11:52,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:11:52,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 14:11:52,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:11:52,295 INFO L87 Difference]: Start difference. First operand 6453 states and 7603 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:56,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:11:56,140 INFO L93 Difference]: Finished difference Result 11375 states and 13283 transitions. [2023-12-24 14:11:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 14:11:56,140 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 163 [2023-12-24 14:11:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:11:56,149 INFO L225 Difference]: With dead ends: 11375 [2023-12-24 14:11:56,149 INFO L226 Difference]: Without dead ends: 8618 [2023-12-24 14:11:56,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2023-12-24 14:11:56,154 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 349 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:11:56,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1604 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 14:11:56,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-24 14:11:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 6453. [2023-12-24 14:11:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 5739 states have (on average 1.1589127025614219) internal successors, (6651), 5767 states have internal predecessors, (6651), 476 states have call successors, (476), 237 states have call predecessors, (476), 237 states have return successors, (476), 448 states have call predecessors, (476), 476 states have call successors, (476) [2023-12-24 14:11:56,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 7603 transitions. [2023-12-24 14:11:56,735 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 7603 transitions. Word has length 163 [2023-12-24 14:11:56,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:11:56,735 INFO L495 AbstractCegarLoop]: Abstraction has 6453 states and 7603 transitions. [2023-12-24 14:11:56,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:11:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 7603 transitions. [2023-12-24 14:11:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 14:11:56,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:11:56,739 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:11:56,744 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 (46)] Ended with exit code 0 [2023-12-24 14:11:56,944 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 14:11:56,944 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:11:56,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:11:56,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1534006016, now seen corresponding path program 1 times [2023-12-24 14:11:56,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:11:56,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277777460] [2023-12-24 14:11:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:11:56,945 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 14:11:56,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:11:56,946 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 14:11:56,947 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 (47)] Waiting until timeout for monitored process [2023-12-24 14:11:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:11:57,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 14:11:57,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:11:57,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 14:11:57,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:57,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 79 [2023-12-24 14:11:58,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:11:58,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 52 [2023-12-24 14:11:58,945 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 22 treesize of output 10 [2023-12-24 14:11:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 327 proven. 15 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-12-24 14:11:59,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:12:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 14:12:00,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:12:00,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277777460] [2023-12-24 14:12:00,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277777460] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:12:00,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:12:00,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [21] total 33 [2023-12-24 14:12:00,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165744038] [2023-12-24 14:12:00,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:12:00,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 14:12:00,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:12:00,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 14:12:00,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 14:12:00,225 INFO L87 Difference]: Start difference. First operand 6453 states and 7603 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:12:02,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:12:02,707 INFO L93 Difference]: Finished difference Result 10091 states and 11801 transitions. [2023-12-24 14:12:02,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:12:02,708 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2023-12-24 14:12:02,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:12:02,708 INFO L225 Difference]: With dead ends: 10091 [2023-12-24 14:12:02,708 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 14:12:02,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 14:12:02,716 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 462 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:12:02,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 1411 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 14:12:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 14:12:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 14:12:02,716 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 14:12:02,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 14:12:02,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2023-12-24 14:12:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:12:02,717 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 14:12:02,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 14:12:02,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 14:12:02,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 14:12:02,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 14:12:02,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2023-12-24 14:12:02,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 14:12:02,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 14:14:25,580 WARN L293 SmtUtils]: Spent 2.32m on a formula simplification. DAG size of input: 496 DAG size of output: 647 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 14:16:44,810 WARN L293 SmtUtils]: Spent 2.32m on a formula simplification. DAG size of input: 496 DAG size of output: 647 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 14:18:16,158 WARN L293 SmtUtils]: Spent 1.51m on a formula simplification. DAG size of input: 492 DAG size of output: 625 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-24 14:24:40,008 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 14:24:40,012 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-245-30-14-14-10-14-10-15-10-15-10-15-10-15-10-15-10-15-10-15-10-15-9-15-7-15-5-15-4-15-4-8-4-8-4-8-4-8-2-8-2-8-2-8-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-288-30-14-15-10-15-10-15-10-15-10-15-10-15-10-15-10-15-10-15-10-15-9-15-7-15-5-15-4-15-4-8-4-8-4-8-4-8-2-8-2-8-2-8-1 context. [2023-12-24 14:24:40,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 14:24:40,029 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 14:24:40,031 INFO L158 Benchmark]: Toolchain (without parser) took 874164.61ms. Allocated memory was 224.4MB in the beginning and 1.1GB in the end (delta: 848.3MB). Free memory was 160.6MB in the beginning and 1.0GB in the end (delta: -846.6MB). Peak memory consumption was 2.7MB. Max. memory is 8.0GB. [2023-12-24 14:24:40,031 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 224.4MB. Free memory was 175.0MB in the beginning and 174.8MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 14:24:40,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.35ms. Allocated memory is still 224.4MB. Free memory was 160.6MB in the beginning and 144.0MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 14:24:40,033 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.50ms. Allocated memory is still 224.4MB. Free memory was 144.0MB in the beginning and 140.2MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 14:24:40,033 INFO L158 Benchmark]: Boogie Preprocessor took 80.88ms. Allocated memory was 224.4MB in the beginning and 269.5MB in the end (delta: 45.1MB). Free memory was 140.2MB in the beginning and 232.0MB in the end (delta: -91.8MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. [2023-12-24 14:24:40,033 INFO L158 Benchmark]: RCFGBuilder took 626.78ms. Allocated memory is still 269.5MB. Free memory was 232.0MB in the beginning and 193.2MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-24 14:24:40,034 INFO L158 Benchmark]: TraceAbstraction took 873152.38ms. Allocated memory was 269.5MB in the beginning and 1.1GB in the end (delta: 803.2MB). Free memory was 192.7MB in the beginning and 1.0GB in the end (delta: -814.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 14:24:40,034 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 224.4MB. Free memory was 175.0MB in the beginning and 174.8MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 252.35ms. Allocated memory is still 224.4MB. Free memory was 160.6MB in the beginning and 144.0MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.50ms. Allocated memory is still 224.4MB. Free memory was 144.0MB in the beginning and 140.2MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 80.88ms. Allocated memory was 224.4MB in the beginning and 269.5MB in the end (delta: 45.1MB). Free memory was 140.2MB in the beginning and 232.0MB in the end (delta: -91.8MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. * RCFGBuilder took 626.78ms. Allocated memory is still 269.5MB. Free memory was 232.0MB in the beginning and 193.2MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * TraceAbstraction took 873152.38ms. Allocated memory was 269.5MB in the beginning and 1.1GB in the end (delta: 803.2MB). Free memory was 192.7MB in the beginning and 1.0GB in the end (delta: -814.5MB). There was no memory consumed. 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 ∨-47-25-2-19-3-18-2-16-2-8-2-8-2-8-1 term,while PolyPacSimplificationTermWalker was simplifying 7 xjuncts wrt. a ∧-63-25-2-19-3-18-2-16-2-8-2-8-2-8-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown