/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-33.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 13:12:23,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 13:12:23,321 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 13:12:23,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 13:12:23,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 13:12:23,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 13:12:23,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 13:12:23,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 13:12:23,350 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 13:12:23,354 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 13:12:23,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 13:12:23,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 13:12:23,355 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 13:12:23,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 13:12:23,356 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 13:12:23,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 13:12:23,357 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 13:12:23,357 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 13:12:23,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 13:12:23,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 13:12:23,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 13:12:23,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 13:12:23,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 13:12:23,359 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 13:12:23,359 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 13:12:23,359 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 13:12:23,359 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 13:12:23,359 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 13:12:23,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 13:12:23,360 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 13:12:23,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 13:12:23,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 13:12:23,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 13:12:23,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 13:12:23,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 13:12:23,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 13:12:23,361 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 13:12:23,361 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 13:12:23,361 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 13:12:23,362 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 13:12:23,362 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 13:12:23,362 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 13:12:23,362 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 13:12:23,362 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 13:12:23,362 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 13:12:23,363 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 13:12:23,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 13:12:23,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 13:12:23,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 13:12:23,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 13:12:23,602 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 13:12:23,603 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 13:12:23,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-33.i [2023-12-24 13:12:24,647 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 13:12:24,830 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 13:12:24,830 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-33.i [2023-12-24 13:12:24,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb265ece7/dba4b6ceb9254679ab64b41122a7b7e7/FLAGb5576fa4c [2023-12-24 13:12:24,850 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb265ece7/dba4b6ceb9254679ab64b41122a7b7e7 [2023-12-24 13:12:24,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 13:12:24,853 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 13:12:24,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 13:12:24,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 13:12:24,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 13:12:24,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:12:24" (1/1) ... [2023-12-24 13:12:24,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d58af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:24, skipping insertion in model container [2023-12-24 13:12:24,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:12:24" (1/1) ... [2023-12-24 13:12:24,885 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 13:12:24,980 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-33.i[916,929] [2023-12-24 13:12:25,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 13:12:25,030 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 13:12:25,039 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-33.i[916,929] [2023-12-24 13:12:25,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 13:12:25,082 INFO L206 MainTranslator]: Completed translation [2023-12-24 13:12:25,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25 WrapperNode [2023-12-24 13:12:25,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 13:12:25,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 13:12:25,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 13:12:25,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 13:12:25,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,144 INFO L138 Inliner]: procedures = 36, calls = 140, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 414 [2023-12-24 13:12:25,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 13:12:25,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 13:12:25,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 13:12:25,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 13:12:25,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,184 INFO L175 MemorySlicer]: Split 115 memory accesses to 6 slices as follows [2, 6, 44, 21, 11, 31]. 38 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 1, 5, 2, 2, 2]. The 15 writes are split as follows [0, 1, 5, 4, 3, 2]. [2023-12-24 13:12:25,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 13:12:25,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 13:12:25,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 13:12:25,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 13:12:25,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (1/1) ... [2023-12-24 13:12:25,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 13:12:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 13:12:25,242 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 13:12:25,256 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 13:12:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 13:12:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 13:12:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 13:12:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 13:12:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 13:12:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 13:12:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 13:12:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 13:12:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 13:12:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 13:12:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 13:12:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 13:12:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 13:12:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 13:12:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 13:12:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 13:12:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 13:12:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 13:12:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 13:12:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 13:12:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 13:12:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 13:12:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 13:12:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 13:12:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 13:12:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 13:12:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 13:12:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 13:12:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 13:12:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 13:12:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 13:12:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 13:12:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 13:12:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 13:12:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 13:12:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 13:12:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 13:12:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 13:12:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 13:12:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 13:12:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 13:12:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 13:12:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 13:12:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 13:12:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 13:12:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 13:12:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 13:12:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 13:12:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 13:12:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 13:12:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 13:12:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 13:12:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 13:12:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 13:12:25,407 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 13:12:25,409 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 13:12:28,258 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 13:12:28,289 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 13:12:28,298 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 13:12:28,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:12:28 BoogieIcfgContainer [2023-12-24 13:12:28,298 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 13:12:28,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 13:12:28,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 13:12:28,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 13:12:28,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 01:12:24" (1/3) ... [2023-12-24 13:12:28,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3c1e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:12:28, skipping insertion in model container [2023-12-24 13:12:28,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:12:25" (2/3) ... [2023-12-24 13:12:28,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3c1e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:12:28, skipping insertion in model container [2023-12-24 13:12:28,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:12:28" (3/3) ... [2023-12-24 13:12:28,304 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-33.i [2023-12-24 13:12:28,316 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 13:12:28,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 13:12:28,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 13:12:28,359 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;@271c1130, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 13:12:28,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 13:12:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 67 states have internal predecessors, (97), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 13:12:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 13:12:28,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:12:28,376 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:12:28,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:12:28,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:12:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1746644822, now seen corresponding path program 1 times [2023-12-24 13:12:28,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:12:28,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596334660] [2023-12-24 13:12:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:12:28,394 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 13:12:28,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:12:28,397 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 13:12:28,447 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 13:12:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:12:28,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 13:12:28,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:12:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-24 13:12:28,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:12:28,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:12:28,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596334660] [2023-12-24 13:12:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596334660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:12:28,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:12:28,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 13:12:28,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625029215] [2023-12-24 13:12:28,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:12:28,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 13:12:28,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:12:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 13:12:28,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 13:12:28,764 INFO L87 Difference]: Start difference. First operand has 78 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 67 states have internal predecessors, (97), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:12:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:12:28,798 INFO L93 Difference]: Finished difference Result 153 states and 237 transitions. [2023-12-24 13:12:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 13:12:28,801 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 87 [2023-12-24 13:12:28,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:12:28,808 INFO L225 Difference]: With dead ends: 153 [2023-12-24 13:12:28,808 INFO L226 Difference]: Without dead ends: 76 [2023-12-24 13:12:28,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 13:12:28,814 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:12:28,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:12:28,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-24 13:12:28,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-24 13:12:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 65 states have internal predecessors, (92), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 13:12:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 110 transitions. [2023-12-24 13:12:28,912 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 110 transitions. Word has length 87 [2023-12-24 13:12:28,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:12:28,912 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 110 transitions. [2023-12-24 13:12:28,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:12:28,913 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 110 transitions. [2023-12-24 13:12:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 13:12:28,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:12:28,933 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:12:28,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 13:12:29,133 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 13:12:29,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:12:29,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:12:29,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1390178384, now seen corresponding path program 1 times [2023-12-24 13:12:29,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:12:29,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189188700] [2023-12-24 13:12:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:12:29,135 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 13:12:29,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:12:29,137 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 13:12:29,138 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 13:12:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:12:29,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 13:12:29,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:12:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-24 13:12:29,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:12:29,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:12:29,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189188700] [2023-12-24 13:12:29,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189188700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:12:29,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:12:29,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 13:12:29,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696566638] [2023-12-24 13:12:29,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:12:29,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 13:12:29,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:12:29,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 13:12:29,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 13:12:29,403 INFO L87 Difference]: Start difference. First operand 76 states and 110 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:12:29,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:12:29,460 INFO L93 Difference]: Finished difference Result 157 states and 228 transitions. [2023-12-24 13:12:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:12:29,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2023-12-24 13:12:29,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:12:29,462 INFO L225 Difference]: With dead ends: 157 [2023-12-24 13:12:29,462 INFO L226 Difference]: Without dead ends: 82 [2023-12-24 13:12:29,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:12:29,463 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 10 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:12:29,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 310 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:12:29,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-24 13:12:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2023-12-24 13:12:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 67 states have internal predecessors, (94), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 13:12:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 112 transitions. [2023-12-24 13:12:29,470 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 112 transitions. Word has length 87 [2023-12-24 13:12:29,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:12:29,470 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 112 transitions. [2023-12-24 13:12:29,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:12:29,471 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 112 transitions. [2023-12-24 13:12:29,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 13:12:29,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:12:29,471 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:12:29,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 13:12:29,678 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 13:12:29,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:12:29,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:12:29,679 INFO L85 PathProgramCache]: Analyzing trace with hash -993746354, now seen corresponding path program 1 times [2023-12-24 13:12:29,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:12:29,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572639451] [2023-12-24 13:12:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:12:29,680 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 13:12:29,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:12:29,681 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 13:12:29,711 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 13:12:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:12:29,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:12:29,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:12:30,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 13:12:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-24 13:12:30,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:12:30,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 13:12:30,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:12:30,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572639451] [2023-12-24 13:12:30,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572639451] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:12:30,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [539229750] [2023-12-24 13:12:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:12:30,655 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:12:30,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:12:30,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:12:30,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-24 13:12:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:12:30,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 13:12:30,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:12:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:12:31,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:12:31,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [539229750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:12:31,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:12:31,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2023-12-24 13:12:31,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62699387] [2023-12-24 13:12:31,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:12:31,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:12:31,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:12:31,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:12:31,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-12-24 13:12:31,062 INFO L87 Difference]: Start difference. First operand 78 states and 112 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:12:31,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:12:31,227 INFO L93 Difference]: Finished difference Result 179 states and 257 transitions. [2023-12-24 13:12:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 13:12:31,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 87 [2023-12-24 13:12:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:12:31,229 INFO L225 Difference]: With dead ends: 179 [2023-12-24 13:12:31,229 INFO L226 Difference]: Without dead ends: 102 [2023-12-24 13:12:31,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-12-24 13:12:31,230 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 53 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:12:31,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 488 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:12:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-24 13:12:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 84. [2023-12-24 13:12:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 1.36986301369863) internal successors, (100), 73 states have internal predecessors, (100), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 13:12:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2023-12-24 13:12:31,236 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 87 [2023-12-24 13:12:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:12:31,236 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2023-12-24 13:12:31,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:12:31,236 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2023-12-24 13:12:31,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 13:12:31,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:12:31,237 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:12:31,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 13:12:31,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-24 13:12:31,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:12:31,682 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:12:31,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:12:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash -936488052, now seen corresponding path program 1 times [2023-12-24 13:12:31,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:12:31,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466357318] [2023-12-24 13:12:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:12:31,690 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 13:12:31,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:12:31,693 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 13:12:31,745 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 13:12:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:12:32,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:12:32,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:12:32,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 13:12:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-24 13:12:32,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:12:32,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 13:12:32,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:12:32,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466357318] [2023-12-24 13:12:32,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466357318] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:12:32,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [722917631] [2023-12-24 13:12:32,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:12:32,886 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:12:32,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:12:32,887 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:12:32,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 13:12:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:12:33,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:12:33,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:12:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:12:33,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:12:33,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [722917631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:12:33,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:12:33,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2023-12-24 13:12:33,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855783538] [2023-12-24 13:12:33,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:12:33,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:12:33,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:12:33,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:12:33,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-12-24 13:12:33,271 INFO L87 Difference]: Start difference. First operand 84 states and 118 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:12:33,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:12:33,461 INFO L93 Difference]: Finished difference Result 186 states and 258 transitions. [2023-12-24 13:12:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 13:12:33,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 87 [2023-12-24 13:12:33,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:12:33,463 INFO L225 Difference]: With dead ends: 186 [2023-12-24 13:12:33,463 INFO L226 Difference]: Without dead ends: 103 [2023-12-24 13:12:33,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2023-12-24 13:12:33,464 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 43 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:12:33,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 579 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:12:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-24 13:12:33,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 86. [2023-12-24 13:12:33,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 75 states have (on average 1.36) internal successors, (102), 75 states have internal predecessors, (102), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 13:12:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2023-12-24 13:12:33,469 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 87 [2023-12-24 13:12:33,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:12:33,469 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2023-12-24 13:12:33,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:12:33,470 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2023-12-24 13:12:33,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 13:12:33,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:12:33,470 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:12:33,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-24 13:12:33,684 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 13:12:33,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:12:33,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:12:33,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:12:33,879 INFO L85 PathProgramCache]: Analyzing trace with hash -936428470, now seen corresponding path program 1 times [2023-12-24 13:12:33,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:12:33,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110103659] [2023-12-24 13:12:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:12:33,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:12:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:12:33,881 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 13:12:33,930 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 13:12:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:12:34,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:12:34,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:12:34,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 13:12:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-24 13:12:36,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:12:36,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 13:12:36,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:12:36,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110103659] [2023-12-24 13:12:36,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110103659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:12:36,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [59061862] [2023-12-24 13:12:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:12:36,875 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:12:36,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:12:36,876 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:12:36,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-24 13:12:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:12:37,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 13:12:37,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:12:37,460 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 13:12:37,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2023-12-24 13:12:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:12:37,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:12:37,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [59061862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:12:37,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:12:37,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-12-24 13:12:37,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800432627] [2023-12-24 13:12:37,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:12:37,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:12:37,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:12:37,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:12:37,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=248, Unknown=1, NotChecked=0, Total=306 [2023-12-24 13:12:37,548 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:12:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:12:37,719 INFO L93 Difference]: Finished difference Result 283 states and 395 transitions. [2023-12-24 13:12:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 13:12:37,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 87 [2023-12-24 13:12:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:12:37,721 INFO L225 Difference]: With dead ends: 283 [2023-12-24 13:12:37,721 INFO L226 Difference]: Without dead ends: 198 [2023-12-24 13:12:37,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=72, Invalid=347, Unknown=1, NotChecked=0, Total=420 [2023-12-24 13:12:37,722 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 160 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:12:37,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 590 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:12:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-24 13:12:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 94. [2023-12-24 13:12:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.3614457831325302) internal successors, (113), 83 states have internal predecessors, (113), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 13:12:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 131 transitions. [2023-12-24 13:12:37,730 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 131 transitions. Word has length 87 [2023-12-24 13:12:37,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:12:37,730 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 131 transitions. [2023-12-24 13:12:37,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:12:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 131 transitions. [2023-12-24 13:12:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 13:12:37,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:12:37,732 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:12:37,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-24 13:12:37,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 13:12:38,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:12:38,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:12:38,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:12:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1947545720, now seen corresponding path program 1 times [2023-12-24 13:12:38,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:12:38,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861462904] [2023-12-24 13:12:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:12:38,134 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 13:12:38,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:12:38,137 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 13:12:38,153 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 13:12:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:12:38,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:12:38,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:12:38,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 13:12:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-24 13:12:41,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:12:41,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 13:12:41,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:12:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861462904] [2023-12-24 13:12:41,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861462904] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:12:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1116629250] [2023-12-24 13:12:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:12:41,249 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:12:41,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:12:41,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:12:41,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-24 13:12:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:12:41,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 13:12:41,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:12:41,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 13:12:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-24 13:12:43,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:12:43,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 13:12:43,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1116629250] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:12:43,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:12:43,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-24 13:12:43,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464687735] [2023-12-24 13:12:43,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:12:43,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 13:12:43,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:12:43,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 13:12:43,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=158, Unknown=1, NotChecked=0, Total=210 [2023-12-24 13:12:43,333 INFO L87 Difference]: Start difference. First operand 94 states and 131 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-24 13:12:48,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:12:50,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:12:53,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:12:59,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:13:02,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:13:04,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:13:05,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:13:08,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:13:09,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:13:12,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:13:16,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:13:16,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:13:16,844 INFO L93 Difference]: Finished difference Result 287 states and 397 transitions. [2023-12-24 13:13:16,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 13:13:16,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2023-12-24 13:13:16,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:13:16,846 INFO L225 Difference]: With dead ends: 287 [2023-12-24 13:13:16,846 INFO L226 Difference]: Without dead ends: 194 [2023-12-24 13:13:16,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=167, Invalid=432, Unknown=1, NotChecked=0, Total=600 [2023-12-24 13:13:16,847 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 198 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 37 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:13:16,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 516 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 244 Invalid, 5 Unknown, 0 Unchecked, 28.5s Time] [2023-12-24 13:13:16,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-24 13:13:16,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 139. [2023-12-24 13:13:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 117 states have (on average 1.3333333333333333) internal successors, (156), 117 states have internal predecessors, (156), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:13:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 192 transitions. [2023-12-24 13:13:16,873 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 192 transitions. Word has length 87 [2023-12-24 13:13:16,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:13:16,873 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 192 transitions. [2023-12-24 13:13:16,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-24 13:13:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 192 transitions. [2023-12-24 13:13:16,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 13:13:16,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:13:16,874 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:13:16,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-24 13:13:17,087 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 (10)] Forceful destruction successful, exit code 0 [2023-12-24 13:13:17,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:13:17,284 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:13:17,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:13:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1728691002, now seen corresponding path program 1 times [2023-12-24 13:13:17,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:13:17,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890340152] [2023-12-24 13:13:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:17,285 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 13:13:17,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:13:17,287 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 13:13:17,315 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 13:13:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:17,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:13:17,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:17,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 41 [2023-12-24 13:13:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-24 13:13:17,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:13:17,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:13:17,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890340152] [2023-12-24 13:13:17,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890340152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:13:17,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:13:17,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:13:17,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908542458] [2023-12-24 13:13:17,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:13:17,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:13:17,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:13:17,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:13:17,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:13:17,571 INFO L87 Difference]: Start difference. First operand 139 states and 192 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:13:19,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:13:22,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:13:22,441 INFO L93 Difference]: Finished difference Result 273 states and 378 transitions. [2023-12-24 13:13:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:13:22,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2023-12-24 13:13:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:13:22,443 INFO L225 Difference]: With dead ends: 273 [2023-12-24 13:13:22,443 INFO L226 Difference]: Without dead ends: 147 [2023-12-24 13:13:22,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:13:22,444 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 124 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-24 13:13:22,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 323 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-24 13:13:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-24 13:13:22,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 135. [2023-12-24 13:13:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 113 states have (on average 1.3274336283185841) internal successors, (150), 113 states have internal predecessors, (150), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:13:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 186 transitions. [2023-12-24 13:13:22,453 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 186 transitions. Word has length 87 [2023-12-24 13:13:22,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:13:22,454 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 186 transitions. [2023-12-24 13:13:22,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:13:22,454 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 186 transitions. [2023-12-24 13:13:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-24 13:13:22,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:13:22,455 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:13:22,468 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 13:13:22,662 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 13:13:22,662 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:13:22,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:13:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash -219562354, now seen corresponding path program 1 times [2023-12-24 13:13:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:13:22,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765207735] [2023-12-24 13:13:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:22,663 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 13:13:22,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:13:22,664 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 13:13:22,666 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 13:13:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:22,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 13:13:22,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:23,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 40 [2023-12-24 13:13:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-24 13:13:23,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:13:23,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 13:13:23,199 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 13:13:23,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:13:23,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765207735] [2023-12-24 13:13:23,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765207735] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 13:13:23,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:13:23,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 13:13:23,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612001432] [2023-12-24 13:13:23,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:13:23,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 13:13:23,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:13:23,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 13:13:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:13:23,200 INFO L87 Difference]: Start difference. First operand 135 states and 186 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-24 13:13:25,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:13:29,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:13:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:13:29,281 INFO L93 Difference]: Finished difference Result 284 states and 385 transitions. [2023-12-24 13:13:29,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 13:13:29,282 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 89 [2023-12-24 13:13:29,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:13:29,283 INFO L225 Difference]: With dead ends: 284 [2023-12-24 13:13:29,283 INFO L226 Difference]: Without dead ends: 139 [2023-12-24 13:13:29,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-12-24 13:13:29,284 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 122 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-24 13:13:29,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 558 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-24 13:13:29,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-24 13:13:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2023-12-24 13:13:29,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 113 states have (on average 1.2920353982300885) internal successors, (146), 113 states have internal predecessors, (146), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:13:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 182 transitions. [2023-12-24 13:13:29,292 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 182 transitions. Word has length 89 [2023-12-24 13:13:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:13:29,292 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 182 transitions. [2023-12-24 13:13:29,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 12 states have internal predecessors, (66), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-24 13:13:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 182 transitions. [2023-12-24 13:13:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-24 13:13:29,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:13:29,293 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:13:29,313 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 13:13:29,493 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 13:13:29,494 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:13:29,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:13:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1953666804, now seen corresponding path program 1 times [2023-12-24 13:13:29,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:13:29,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952586752] [2023-12-24 13:13:29,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:29,494 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 13:13:29,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:13:29,497 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 13:13:29,501 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 13:13:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:29,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:13:29,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:29,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 41 [2023-12-24 13:13:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-24 13:13:29,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:13:29,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:13:29,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952586752] [2023-12-24 13:13:29,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952586752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:13:29,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:13:29,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:13:29,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925234787] [2023-12-24 13:13:29,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:13:29,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:13:29,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:13:29,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:13:29,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:13:29,853 INFO L87 Difference]: Start difference. First operand 135 states and 182 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:13:32,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:13:33,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:13:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:13:33,982 INFO L93 Difference]: Finished difference Result 257 states and 347 transitions. [2023-12-24 13:13:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:13:33,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2023-12-24 13:13:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:13:33,984 INFO L225 Difference]: With dead ends: 257 [2023-12-24 13:13:33,984 INFO L226 Difference]: Without dead ends: 147 [2023-12-24 13:13:33,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:13:33,984 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 96 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:13:33,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 313 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-24 13:13:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-24 13:13:33,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 135. [2023-12-24 13:13:33,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 113 states have (on average 1.2743362831858407) internal successors, (144), 113 states have internal predecessors, (144), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:13:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 180 transitions. [2023-12-24 13:13:33,990 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 180 transitions. Word has length 89 [2023-12-24 13:13:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:13:33,991 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 180 transitions. [2023-12-24 13:13:33,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:13:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 180 transitions. [2023-12-24 13:13:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-24 13:13:33,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:13:33,991 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:13:33,998 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 13:13:34,197 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 13:13:34,198 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:13:34,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:13:34,198 INFO L85 PathProgramCache]: Analyzing trace with hash 561034706, now seen corresponding path program 1 times [2023-12-24 13:13:34,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:13:34,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317560356] [2023-12-24 13:13:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:34,199 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 13:13:34,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:13:34,200 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 13:13:34,233 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 13:13:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:34,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 13:13:34,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:34,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 13:13:34,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:13:34,615 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 58 treesize of output 38 [2023-12-24 13:13:34,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:13:34,623 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 45 treesize of output 21 [2023-12-24 13:13:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 13:13:34,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:13:34,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:13:34,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317560356] [2023-12-24 13:13:34,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317560356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:13:34,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:13:34,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 13:13:34,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511766889] [2023-12-24 13:13:34,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:13:34,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 13:13:34,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:13:34,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 13:13:34,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:13:34,713 INFO L87 Difference]: Start difference. First operand 135 states and 180 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:13:36,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:13:36,291 INFO L93 Difference]: Finished difference Result 392 states and 516 transitions. [2023-12-24 13:13:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 13:13:36,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2023-12-24 13:13:36,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:13:36,294 INFO L225 Difference]: With dead ends: 392 [2023-12-24 13:13:36,294 INFO L226 Difference]: Without dead ends: 301 [2023-12-24 13:13:36,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2023-12-24 13:13:36,295 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 335 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:13:36,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 953 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 13:13:36,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-24 13:13:36,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 151. [2023-12-24 13:13:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 127 states have (on average 1.2677165354330708) internal successors, (161), 127 states have internal predecessors, (161), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:13:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 197 transitions. [2023-12-24 13:13:36,303 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 197 transitions. Word has length 91 [2023-12-24 13:13:36,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:13:36,303 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 197 transitions. [2023-12-24 13:13:36,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:13:36,303 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 197 transitions. [2023-12-24 13:13:36,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-24 13:13:36,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:13:36,304 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:13:36,310 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 13:13:36,504 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 13:13:36,505 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:13:36,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:13:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash -421992750, now seen corresponding path program 1 times [2023-12-24 13:13:36,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:13:36,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865266119] [2023-12-24 13:13:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:36,506 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 13:13:36,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:13:36,508 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 13:13:36,528 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 13:13:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:36,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 13:13:36,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:36,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 13:13:36,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:13:36,995 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 39 [2023-12-24 13:13:37,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:13:37,001 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 46 treesize of output 22 [2023-12-24 13:13:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 13:13:37,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:13:37,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:13:37,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865266119] [2023-12-24 13:13:37,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865266119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:13:37,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:13:37,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 13:13:37,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017704483] [2023-12-24 13:13:37,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:13:37,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 13:13:37,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:13:37,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 13:13:37,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:13:37,059 INFO L87 Difference]: Start difference. First operand 151 states and 197 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:13:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:13:38,384 INFO L93 Difference]: Finished difference Result 404 states and 529 transitions. [2023-12-24 13:13:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 13:13:38,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2023-12-24 13:13:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:13:38,387 INFO L225 Difference]: With dead ends: 404 [2023-12-24 13:13:38,387 INFO L226 Difference]: Without dead ends: 301 [2023-12-24 13:13:38,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2023-12-24 13:13:38,387 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 376 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 13:13:38,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 792 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 13:13:38,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-24 13:13:38,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 157. [2023-12-24 13:13:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 133 states have (on average 1.2706766917293233) internal successors, (169), 133 states have internal predecessors, (169), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:13:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 205 transitions. [2023-12-24 13:13:38,398 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 205 transitions. Word has length 91 [2023-12-24 13:13:38,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:13:38,398 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 205 transitions. [2023-12-24 13:13:38,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:13:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 205 transitions. [2023-12-24 13:13:38,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-24 13:13:38,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:13:38,399 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:13:38,407 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 13:13:38,607 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 13:13:38,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:13:38,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:13:38,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1433110000, now seen corresponding path program 1 times [2023-12-24 13:13:38,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:13:38,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451546598] [2023-12-24 13:13:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:38,608 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 13:13:38,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:13:38,609 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 13:13:38,613 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 13:13:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:38,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:13:38,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:38,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-24 13:13:38,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 69 [2023-12-24 13:13:38,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 51 [2023-12-24 13:13:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:13:38,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:13:38,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:13:38,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451546598] [2023-12-24 13:13:38,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451546598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:13:38,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:13:38,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:13:38,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692579147] [2023-12-24 13:13:38,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:13:38,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:13:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:13:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:13:38,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:13:38,913 INFO L87 Difference]: Start difference. First operand 157 states and 205 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:13:39,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:13:39,289 INFO L93 Difference]: Finished difference Result 376 states and 498 transitions. [2023-12-24 13:13:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 13:13:39,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 91 [2023-12-24 13:13:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:13:39,292 INFO L225 Difference]: With dead ends: 376 [2023-12-24 13:13:39,292 INFO L226 Difference]: Without dead ends: 267 [2023-12-24 13:13:39,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:13:39,293 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 149 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:13:39,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 616 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 13:13:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-24 13:13:39,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 157. [2023-12-24 13:13:39,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 133 states have (on average 1.2706766917293233) internal successors, (169), 133 states have internal predecessors, (169), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:13:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 205 transitions. [2023-12-24 13:13:39,313 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 205 transitions. Word has length 91 [2023-12-24 13:13:39,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:13:39,314 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 205 transitions. [2023-12-24 13:13:39,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:13:39,314 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 205 transitions. [2023-12-24 13:13:39,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-24 13:13:39,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:13:39,315 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:13:39,323 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 (17)] Forceful destruction successful, exit code 0 [2023-12-24 13:13:39,520 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 13:13:39,521 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:13:39,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:13:39,521 INFO L85 PathProgramCache]: Analyzing trace with hash -339811034, now seen corresponding path program 1 times [2023-12-24 13:13:39,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:13:39,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798038170] [2023-12-24 13:13:39,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:39,522 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 13:13:39,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:13:39,523 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 13:13:39,524 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 13:13:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:39,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 13:13:39,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:39,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-24 13:13:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:13:39,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:13:39,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:13:39,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798038170] [2023-12-24 13:13:39,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798038170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:13:39,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:13:39,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 13:13:39,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412545575] [2023-12-24 13:13:39,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:13:39,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 13:13:39,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:13:39,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 13:13:39,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 13:13:39,784 INFO L87 Difference]: Start difference. First operand 157 states and 205 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:13:39,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:13:39,895 INFO L93 Difference]: Finished difference Result 266 states and 351 transitions. [2023-12-24 13:13:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 13:13:39,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 92 [2023-12-24 13:13:39,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:13:39,896 INFO L225 Difference]: With dead ends: 266 [2023-12-24 13:13:39,896 INFO L226 Difference]: Without dead ends: 157 [2023-12-24 13:13:39,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 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 13:13:39,897 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 12 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:13:39,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 264 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:13:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-24 13:13:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-12-24 13:13:39,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 133 states have (on average 1.263157894736842) internal successors, (168), 133 states have internal predecessors, (168), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:13:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2023-12-24 13:13:39,905 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 92 [2023-12-24 13:13:39,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:13:39,906 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2023-12-24 13:13:39,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:13:39,906 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2023-12-24 13:13:39,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-24 13:13:39,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:13:39,906 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:13:39,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 13:13:40,112 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 13:13:40,113 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:13:40,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:13:40,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1157459484, now seen corresponding path program 1 times [2023-12-24 13:13:40,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:13:40,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356281008] [2023-12-24 13:13:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:40,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:13:40,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:13:40,120 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 13:13:40,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 13:13:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:40,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 13:13:40,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:40,362 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 21 treesize of output 17 [2023-12-24 13:13:40,383 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 35 treesize of output 28 [2023-12-24 13:13:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:13:40,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:13:40,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:13:40,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356281008] [2023-12-24 13:13:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356281008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:13:40,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:13:40,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:13:40,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000534008] [2023-12-24 13:13:40,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:13:40,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:13:40,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:13:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:13:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:13:40,451 INFO L87 Difference]: Start difference. First operand 157 states and 204 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:13:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:13:40,846 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2023-12-24 13:13:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:13:40,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 92 [2023-12-24 13:13:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:13:40,848 INFO L225 Difference]: With dead ends: 338 [2023-12-24 13:13:40,848 INFO L226 Difference]: Without dead ends: 229 [2023-12-24 13:13:40,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:13:40,848 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 241 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:13:40,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 390 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 13:13:40,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-24 13:13:40,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 151. [2023-12-24 13:13:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 127 states have internal predecessors, (158), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:13:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 194 transitions. [2023-12-24 13:13:40,858 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 194 transitions. Word has length 92 [2023-12-24 13:13:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:13:40,858 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 194 transitions. [2023-12-24 13:13:40,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:13:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 194 transitions. [2023-12-24 13:13:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-24 13:13:40,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:13:40,859 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:13:40,865 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 13:13:41,065 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 13:13:41,065 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:13:41,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:13:41,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2140486940, now seen corresponding path program 1 times [2023-12-24 13:13:41,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:13:41,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497568432] [2023-12-24 13:13:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:41,066 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 13:13:41,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:13:41,067 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 13:13:41,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 13:13:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:41,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 13:13:41,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:41,314 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 21 treesize of output 17 [2023-12-24 13:13:41,329 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 35 treesize of output 28 [2023-12-24 13:13:41,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2023-12-24 13:13:41,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:13:41,440 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 37 treesize of output 17 [2023-12-24 13:13:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:13:41,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:13:41,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:13:41,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497568432] [2023-12-24 13:13:41,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497568432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:13:41,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:13:41,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:13:41,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4971464] [2023-12-24 13:13:41,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:13:41,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:13:41,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:13:41,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:13:41,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:13:41,469 INFO L87 Difference]: Start difference. First operand 151 states and 194 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:13:41,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:13:41,941 INFO L93 Difference]: Finished difference Result 328 states and 425 transitions. [2023-12-24 13:13:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:13:41,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 92 [2023-12-24 13:13:41,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:13:41,943 INFO L225 Difference]: With dead ends: 328 [2023-12-24 13:13:41,943 INFO L226 Difference]: Without dead ends: 225 [2023-12-24 13:13:41,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:13:41,944 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 226 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:13:41,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 614 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 13:13:41,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-24 13:13:41,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 141. [2023-12-24 13:13:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 117 states have (on average 1.2307692307692308) internal successors, (144), 117 states have internal predecessors, (144), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:13:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 180 transitions. [2023-12-24 13:13:41,953 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 180 transitions. Word has length 92 [2023-12-24 13:13:41,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:13:41,953 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 180 transitions. [2023-12-24 13:13:41,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:13:41,953 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 180 transitions. [2023-12-24 13:13:41,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-24 13:13:41,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:13:41,954 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:13:41,979 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 13:13:42,172 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 13:13:42,172 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:13:42,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:13:42,173 INFO L85 PathProgramCache]: Analyzing trace with hash -323490183, now seen corresponding path program 1 times [2023-12-24 13:13:42,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:13:42,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808409492] [2023-12-24 13:13:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:42,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:13:42,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:13:42,174 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 13:13:42,207 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 13:13:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:42,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:13:42,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:42,469 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 21 treesize of output 17 [2023-12-24 13:13:42,483 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 35 treesize of output 34 [2023-12-24 13:13:42,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:13:42,520 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 56 treesize of output 40 [2023-12-24 13:13:42,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:13:42,525 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 40 treesize of output 20 [2023-12-24 13:13:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:13:42,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:13:42,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:13:42,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808409492] [2023-12-24 13:13:42,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808409492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:13:42,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:13:42,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:13:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639862979] [2023-12-24 13:13:42,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:13:42,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:13:42,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:13:42,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:13:42,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:13:42,542 INFO L87 Difference]: Start difference. First operand 141 states and 180 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:13:42,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:13:42,865 INFO L93 Difference]: Finished difference Result 300 states and 387 transitions. [2023-12-24 13:13:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:13:42,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 93 [2023-12-24 13:13:42,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:13:42,866 INFO L225 Difference]: With dead ends: 300 [2023-12-24 13:13:42,866 INFO L226 Difference]: Without dead ends: 207 [2023-12-24 13:13:42,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:13:42,867 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 191 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:13:42,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 417 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 13:13:42,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-24 13:13:42,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 133. [2023-12-24 13:13:42,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 109 states have (on average 1.2201834862385321) internal successors, (133), 109 states have internal predecessors, (133), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:13:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 169 transitions. [2023-12-24 13:13:42,875 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 169 transitions. Word has length 93 [2023-12-24 13:13:42,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:13:42,875 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 169 transitions. [2023-12-24 13:13:42,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:13:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 169 transitions. [2023-12-24 13:13:42,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-24 13:13:42,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:13:42,876 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:13:42,885 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 13:13:43,085 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 13:13:43,086 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:13:43,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:13:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2132760309, now seen corresponding path program 1 times [2023-12-24 13:13:43,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:13:43,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426894528] [2023-12-24 13:13:43,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:43,086 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 13:13:43,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:13:43,088 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 13:13:43,089 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 13:13:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:43,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 13:13:43,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:43,470 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 13:13:43,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-12-24 13:13:43,668 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 32 treesize of output 31 [2023-12-24 13:13:43,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:13:43,780 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 36 treesize of output 22 [2023-12-24 13:13:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-24 13:13:44,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:13:44,416 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 17 treesize of output 13 [2023-12-24 13:13:44,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:13:44,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426894528] [2023-12-24 13:13:44,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426894528] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:13:44,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1274598019] [2023-12-24 13:13:44,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:13:44,451 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:13:44,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:13:44,452 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:13:44,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-24 13:13:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:13:45,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 13:13:45,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:13:45,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:13:47,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 20 [2023-12-24 13:13:47,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 33 [2023-12-24 13:13:47,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:13:47,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2023-12-24 13:13:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 83 proven. 9 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-24 13:13:47,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:13:47,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1274598019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:13:47,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:13:47,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2023-12-24 13:13:47,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776119932] [2023-12-24 13:13:47,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:13:47,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 13:13:47,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:13:47,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 13:13:47,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:13:47,936 INFO L87 Difference]: Start difference. First operand 133 states and 169 transitions. Second operand has 18 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-24 13:13:52,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:14:00,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:14:05,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:14:08,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:14:08,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:08,429 INFO L93 Difference]: Finished difference Result 269 states and 341 transitions. [2023-12-24 13:14:08,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 13:14:08,429 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) Word has length 93 [2023-12-24 13:14:08,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:08,430 INFO L225 Difference]: With dead ends: 269 [2023-12-24 13:14:08,430 INFO L226 Difference]: Without dead ends: 184 [2023-12-24 13:14:08,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 260 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=373, Invalid=1033, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 13:14:08,431 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 331 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 73 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:08,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 848 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 291 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2023-12-24 13:14:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-24 13:14:08,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 151. [2023-12-24 13:14:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 126 states have internal predecessors, (153), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:14:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 189 transitions. [2023-12-24 13:14:08,442 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 189 transitions. Word has length 93 [2023-12-24 13:14:08,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:08,442 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 189 transitions. [2023-12-24 13:14:08,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-24 13:14:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 189 transitions. [2023-12-24 13:14:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-24 13:14:08,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:08,443 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:08,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2023-12-24 13:14:08,649 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 13:14:08,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 13:14:08,843 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:08,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1545954295, now seen corresponding path program 1 times [2023-12-24 13:14:08,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:08,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13842655] [2023-12-24 13:14:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:08,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:14:08,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:08,845 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 13:14:08,847 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 13:14:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:09,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 13:14:09,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:14:09,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:09,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:09,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13842655] [2023-12-24 13:14:09,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13842655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:09,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:09,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:14:09,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044562802] [2023-12-24 13:14:09,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:09,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:14:09,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:09,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:14:09,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:14:09,123 INFO L87 Difference]: Start difference. First operand 151 states and 189 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:09,205 INFO L93 Difference]: Finished difference Result 258 states and 329 transitions. [2023-12-24 13:14:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:14:09,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 93 [2023-12-24 13:14:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:09,207 INFO L225 Difference]: With dead ends: 258 [2023-12-24 13:14:09,207 INFO L226 Difference]: Without dead ends: 173 [2023-12-24 13:14:09,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:14:09,208 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 60 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:09,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 366 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:14:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-24 13:14:09,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 154. [2023-12-24 13:14:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 129 states have internal predecessors, (156), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:14:09,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 192 transitions. [2023-12-24 13:14:09,224 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 192 transitions. Word has length 93 [2023-12-24 13:14:09,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:09,224 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 192 transitions. [2023-12-24 13:14:09,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:09,224 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 192 transitions. [2023-12-24 13:14:09,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-24 13:14:09,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:09,225 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:09,237 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 13:14:09,433 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 13:14:09,434 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:09,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:09,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2075183717, now seen corresponding path program 1 times [2023-12-24 13:14:09,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:09,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716977128] [2023-12-24 13:14:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:09,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:14:09,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:09,436 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 13:14:09,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 13:14:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:09,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 13:14:09,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:14:09,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:09,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:09,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716977128] [2023-12-24 13:14:09,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716977128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:09,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:09,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:14:09,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468727697] [2023-12-24 13:14:09,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:09,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:14:09,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:09,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:14:09,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:14:09,686 INFO L87 Difference]: Start difference. First operand 154 states and 192 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:09,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:09,744 INFO L93 Difference]: Finished difference Result 256 states and 324 transitions. [2023-12-24 13:14:09,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:14:09,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 95 [2023-12-24 13:14:09,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:09,745 INFO L225 Difference]: With dead ends: 256 [2023-12-24 13:14:09,745 INFO L226 Difference]: Without dead ends: 168 [2023-12-24 13:14:09,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:14:09,746 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 45 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:09,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 362 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:14:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-24 13:14:09,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 157. [2023-12-24 13:14:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 132 states have (on average 1.2045454545454546) internal successors, (159), 132 states have internal predecessors, (159), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:14:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 195 transitions. [2023-12-24 13:14:09,759 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 195 transitions. Word has length 95 [2023-12-24 13:14:09,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:09,760 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 195 transitions. [2023-12-24 13:14:09,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:09,760 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 195 transitions. [2023-12-24 13:14:09,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-24 13:14:09,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:09,761 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:09,768 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 13:14:09,967 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 13:14:09,968 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:09,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash 853709294, now seen corresponding path program 1 times [2023-12-24 13:14:09,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:09,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612613309] [2023-12-24 13:14:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:09,969 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 13:14:09,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:09,970 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 13:14:10,006 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 13:14:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:10,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 13:14:10,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:10,451 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 23 treesize of output 22 [2023-12-24 13:14:10,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-12-24 13:14:10,591 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 35 treesize of output 34 [2023-12-24 13:14:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-24 13:14:10,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:10,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:10,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612613309] [2023-12-24 13:14:10,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612613309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:10,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:10,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 13:14:10,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010074007] [2023-12-24 13:14:10,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:10,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 13:14:10,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:10,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 13:14:10,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:14:10,997 INFO L87 Difference]: Start difference. First operand 157 states and 195 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:14:11,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:11,602 INFO L93 Difference]: Finished difference Result 346 states and 434 transitions. [2023-12-24 13:14:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 13:14:11,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 97 [2023-12-24 13:14:11,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:11,604 INFO L225 Difference]: With dead ends: 346 [2023-12-24 13:14:11,604 INFO L226 Difference]: Without dead ends: 344 [2023-12-24 13:14:11,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:14:11,604 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 343 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:11,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 632 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 13:14:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-24 13:14:11,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 248. [2023-12-24 13:14:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 212 states have (on average 1.2169811320754718) internal successors, (258), 212 states have internal predecessors, (258), 27 states have call successors, (27), 8 states have call predecessors, (27), 8 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 13:14:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 312 transitions. [2023-12-24 13:14:11,620 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 312 transitions. Word has length 97 [2023-12-24 13:14:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:11,620 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 312 transitions. [2023-12-24 13:14:11,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:14:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 312 transitions. [2023-12-24 13:14:11,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-24 13:14:11,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:11,621 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:11,628 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 13:14:11,828 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 13:14:11,828 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:11,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:11,828 INFO L85 PathProgramCache]: Analyzing trace with hash 853768876, now seen corresponding path program 1 times [2023-12-24 13:14:11,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:11,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030569240] [2023-12-24 13:14:11,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:11,829 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 13:14:11,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:11,830 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 13:14:11,832 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 13:14:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:12,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 13:14:12,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:12,228 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 13:14:12,731 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 129 treesize of output 65 [2023-12-24 13:14:12,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:14:12,956 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 219 treesize of output 75 [2023-12-24 13:14:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-24 13:14:13,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:14:13,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:13,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030569240] [2023-12-24 13:14:13,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030569240] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:14:13,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [492728405] [2023-12-24 13:14:13,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:13,198 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:14:13,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:14:13,199 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:14:13,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-24 13:14:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:14,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 13:14:14,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:14,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 13:14:15,304 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 101 treesize of output 57 [2023-12-24 13:14:15,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:14:15,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 75 [2023-12-24 13:14:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-24 13:14:15,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:14:15,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [492728405] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:14:15,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:14:15,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-12-24 13:14:15,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811423996] [2023-12-24 13:14:15,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:14:15,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 13:14:15,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:15,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 13:14:15,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-12-24 13:14:15,723 INFO L87 Difference]: Start difference. First operand 248 states and 312 transitions. Second operand has 26 states, 24 states have (on average 4.875) internal successors, (117), 23 states have internal predecessors, (117), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-24 13:14:19,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:14:21,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:14:24,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:14:30,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:14:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:31,465 INFO L93 Difference]: Finished difference Result 904 states and 1119 transitions. [2023-12-24 13:14:31,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 13:14:31,469 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.875) internal successors, (117), 23 states have internal predecessors, (117), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) Word has length 97 [2023-12-24 13:14:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:31,473 INFO L225 Difference]: With dead ends: 904 [2023-12-24 13:14:31,473 INFO L226 Difference]: Without dead ends: 722 [2023-12-24 13:14:31,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 223 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=389, Invalid=1503, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 13:14:31,475 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 575 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:31,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1129 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2023-12-24 13:14:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-12-24 13:14:31,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 489. [2023-12-24 13:14:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 417 states have (on average 1.2014388489208634) internal successors, (501), 419 states have internal predecessors, (501), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-24 13:14:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 601 transitions. [2023-12-24 13:14:31,511 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 601 transitions. Word has length 97 [2023-12-24 13:14:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:31,511 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 601 transitions. [2023-12-24 13:14:31,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.875) internal successors, (117), 23 states have internal predecessors, (117), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-24 13:14:31,511 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 601 transitions. [2023-12-24 13:14:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-24 13:14:31,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:31,512 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:31,519 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 13:14:31,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2023-12-24 13:14:31,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:14:31,925 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:31,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:31,926 INFO L85 PathProgramCache]: Analyzing trace with hash 911027178, now seen corresponding path program 1 times [2023-12-24 13:14:31,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:31,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051851494] [2023-12-24 13:14:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:31,926 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 13:14:31,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:31,927 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 13:14:31,929 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 13:14:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:32,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 13:14:32,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:32,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 13:14:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:14:32,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:32,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051851494] [2023-12-24 13:14:32,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051851494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:32,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:14:32,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729508441] [2023-12-24 13:14:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:32,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:14:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:14:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:14:32,261 INFO L87 Difference]: Start difference. First operand 489 states and 601 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:32,585 INFO L93 Difference]: Finished difference Result 1236 states and 1536 transitions. [2023-12-24 13:14:32,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 13:14:32,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 97 [2023-12-24 13:14:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:32,590 INFO L225 Difference]: With dead ends: 1236 [2023-12-24 13:14:32,590 INFO L226 Difference]: Without dead ends: 862 [2023-12-24 13:14:32,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-24 13:14:32,592 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 99 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:32,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 585 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:14:32,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-12-24 13:14:32,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 631. [2023-12-24 13:14:32,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 559 states have (on average 1.2146690518783543) internal successors, (679), 561 states have internal predecessors, (679), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-24 13:14:32,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 779 transitions. [2023-12-24 13:14:32,636 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 779 transitions. Word has length 97 [2023-12-24 13:14:32,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:32,636 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 779 transitions. [2023-12-24 13:14:32,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:32,636 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 779 transitions. [2023-12-24 13:14:32,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-24 13:14:32,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:32,637 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:32,646 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 13:14:32,843 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 13:14:32,844 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:32,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:32,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1759193024, now seen corresponding path program 1 times [2023-12-24 13:14:32,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:32,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278573246] [2023-12-24 13:14:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:32,845 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 13:14:32,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:32,846 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 13:14:32,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 13:14:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:33,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 13:14:33,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:33,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 13:14:33,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:14:33,482 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 77 treesize of output 45 [2023-12-24 13:14:33,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:14:33,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 24 [2023-12-24 13:14:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 13:14:33,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:33,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:33,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278573246] [2023-12-24 13:14:33,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278573246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:33,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:33,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 13:14:33,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408814761] [2023-12-24 13:14:33,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:33,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 13:14:33,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:33,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 13:14:33,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:14:33,545 INFO L87 Difference]: Start difference. First operand 631 states and 779 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:14:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:34,869 INFO L93 Difference]: Finished difference Result 1697 states and 2090 transitions. [2023-12-24 13:14:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 13:14:34,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 97 [2023-12-24 13:14:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:34,874 INFO L225 Difference]: With dead ends: 1697 [2023-12-24 13:14:34,874 INFO L226 Difference]: Without dead ends: 1203 [2023-12-24 13:14:34,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2023-12-24 13:14:34,875 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 282 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:34,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 802 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 13:14:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-12-24 13:14:34,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 689. [2023-12-24 13:14:34,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 617 states have (on average 1.2074554294975688) internal successors, (745), 619 states have internal predecessors, (745), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-24 13:14:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 845 transitions. [2023-12-24 13:14:34,920 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 845 transitions. Word has length 97 [2023-12-24 13:14:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:34,920 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 845 transitions. [2023-12-24 13:14:34,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 13:14:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 845 transitions. [2023-12-24 13:14:34,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-24 13:14:34,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:34,921 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:34,931 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 13:14:35,131 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 13:14:35,132 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:35,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1055592810, now seen corresponding path program 1 times [2023-12-24 13:14:35,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:35,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996565865] [2023-12-24 13:14:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:35,132 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 13:14:35,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:35,133 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 13:14:35,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 13:14:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:35,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 13:14:35,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-24 13:14:35,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:35,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:35,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996565865] [2023-12-24 13:14:35,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996565865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:35,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:35,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:14:35,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425155418] [2023-12-24 13:14:35,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:35,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:14:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:14:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:14:35,442 INFO L87 Difference]: Start difference. First operand 689 states and 845 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-24 13:14:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:35,573 INFO L93 Difference]: Finished difference Result 1311 states and 1611 transitions. [2023-12-24 13:14:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 13:14:35,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 97 [2023-12-24 13:14:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:35,576 INFO L225 Difference]: With dead ends: 1311 [2023-12-24 13:14:35,576 INFO L226 Difference]: Without dead ends: 711 [2023-12-24 13:14:35,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:14:35,578 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 7 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:35,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 407 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:14:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-12-24 13:14:35,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 689. [2023-12-24 13:14:35,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 617 states have (on average 1.1977309562398704) internal successors, (739), 619 states have internal predecessors, (739), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-24 13:14:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 839 transitions. [2023-12-24 13:14:35,614 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 839 transitions. Word has length 97 [2023-12-24 13:14:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:35,615 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 839 transitions. [2023-12-24 13:14:35,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-24 13:14:35,615 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 839 transitions. [2023-12-24 13:14:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-24 13:14:35,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:35,615 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:35,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 13:14:35,821 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 13:14:35,822 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:35,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:35,822 INFO L85 PathProgramCache]: Analyzing trace with hash 436372270, now seen corresponding path program 1 times [2023-12-24 13:14:35,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:35,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638208750] [2023-12-24 13:14:35,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:35,822 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 13:14:35,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:35,823 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 13:14:35,827 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 13:14:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:36,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 13:14:36,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:36,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 40 [2023-12-24 13:14:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 80 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-24 13:14:36,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:14:36,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 22 [2023-12-24 13:14:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 13:14:36,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:36,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638208750] [2023-12-24 13:14:36,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638208750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 13:14:36,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:14:36,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 13:14:36,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401230746] [2023-12-24 13:14:36,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:14:36,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 13:14:36,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:36,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 13:14:36,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:14:36,363 INFO L87 Difference]: Start difference. First operand 689 states and 839 transitions. Second operand has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-24 13:14:39,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:14:41,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:41,147 INFO L93 Difference]: Finished difference Result 1001 states and 1214 transitions. [2023-12-24 13:14:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 13:14:41,148 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 97 [2023-12-24 13:14:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:41,149 INFO L225 Difference]: With dead ends: 1001 [2023-12-24 13:14:41,149 INFO L226 Difference]: Without dead ends: 380 [2023-12-24 13:14:41,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2023-12-24 13:14:41,150 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 94 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:41,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 386 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-24 13:14:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-24 13:14:41,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 368. [2023-12-24 13:14:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 327 states have (on average 1.18348623853211) internal successors, (387), 327 states have internal predecessors, (387), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 13:14:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 441 transitions. [2023-12-24 13:14:41,188 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 441 transitions. Word has length 97 [2023-12-24 13:14:41,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:41,188 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 441 transitions. [2023-12-24 13:14:41,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-24 13:14:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 441 transitions. [2023-12-24 13:14:41,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-24 13:14:41,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:41,189 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:41,208 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 13:14:41,396 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 13:14:41,396 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:41,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:41,397 INFO L85 PathProgramCache]: Analyzing trace with hash 842674812, now seen corresponding path program 1 times [2023-12-24 13:14:41,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:41,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158525941] [2023-12-24 13:14:41,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:41,397 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 13:14:41,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:41,398 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 13:14:41,400 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 13:14:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:41,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:14:41,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:41,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 13:14:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 38 proven. 21 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-24 13:14:41,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:14:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:14:42,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:42,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158525941] [2023-12-24 13:14:42,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158525941] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:14:42,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:14:42,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-24 13:14:42,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729004842] [2023-12-24 13:14:42,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:42,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:14:42,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:42,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:14:42,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:14:42,016 INFO L87 Difference]: Start difference. First operand 368 states and 441 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:42,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:42,099 INFO L93 Difference]: Finished difference Result 705 states and 844 transitions. [2023-12-24 13:14:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:14:42,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 98 [2023-12-24 13:14:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:42,110 INFO L225 Difference]: With dead ends: 705 [2023-12-24 13:14:42,110 INFO L226 Difference]: Without dead ends: 423 [2023-12-24 13:14:42,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 13:14:42,111 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 66 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:42,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 343 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:14:42,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-12-24 13:14:42,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 368. [2023-12-24 13:14:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 327 states have (on average 1.1773700305810397) internal successors, (385), 327 states have internal predecessors, (385), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 13:14:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 439 transitions. [2023-12-24 13:14:42,134 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 439 transitions. Word has length 98 [2023-12-24 13:14:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:42,135 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 439 transitions. [2023-12-24 13:14:42,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 439 transitions. [2023-12-24 13:14:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-24 13:14:42,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:42,136 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:42,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-24 13:14:42,342 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 13:14:42,343 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:42,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:42,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1827545390, now seen corresponding path program 1 times [2023-12-24 13:14:42,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:42,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084097057] [2023-12-24 13:14:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:42,344 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 13:14:42,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:42,345 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 13:14:42,346 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 13:14:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:42,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 13:14:42,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:42,675 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 21 treesize of output 17 [2023-12-24 13:14:42,690 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 35 treesize of output 28 [2023-12-24 13:14:42,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 20 [2023-12-24 13:14:42,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:14:42,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 15 [2023-12-24 13:14:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:14:42,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:42,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:42,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084097057] [2023-12-24 13:14:42,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084097057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:42,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:42,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:14:42,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572372370] [2023-12-24 13:14:42,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:42,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:14:42,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:42,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:14:42,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:14:42,866 INFO L87 Difference]: Start difference. First operand 368 states and 439 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:43,404 INFO L93 Difference]: Finished difference Result 792 states and 941 transitions. [2023-12-24 13:14:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:14:43,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 98 [2023-12-24 13:14:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:43,406 INFO L225 Difference]: With dead ends: 792 [2023-12-24 13:14:43,406 INFO L226 Difference]: Without dead ends: 503 [2023-12-24 13:14:43,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:14:43,407 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 188 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:43,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 636 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 13:14:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-12-24 13:14:43,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 352. [2023-12-24 13:14:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 311 states have (on average 1.1479099678456592) internal successors, (357), 311 states have internal predecessors, (357), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 13:14:43,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 411 transitions. [2023-12-24 13:14:43,428 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 411 transitions. Word has length 98 [2023-12-24 13:14:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:43,428 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 411 transitions. [2023-12-24 13:14:43,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 411 transitions. [2023-12-24 13:14:43,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-24 13:14:43,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:43,429 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:43,438 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 13:14:43,638 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 13:14:43,638 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:43,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:43,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2039277893, now seen corresponding path program 1 times [2023-12-24 13:14:43,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:43,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006960099] [2023-12-24 13:14:43,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:43,639 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 13:14:43,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:43,640 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 13:14:43,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 13:14:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:44,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 13:14:44,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:44,344 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 23 treesize of output 22 [2023-12-24 13:14:44,559 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 21 treesize of output 17 [2023-12-24 13:14:44,624 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 35 treesize of output 34 [2023-12-24 13:14:44,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:14:44,714 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 68 treesize of output 38 [2023-12-24 13:14:44,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:14:44,719 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 39 treesize of output 19 [2023-12-24 13:14:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-24 13:14:44,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:44,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:44,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006960099] [2023-12-24 13:14:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006960099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:44,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:44,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 13:14:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567518488] [2023-12-24 13:14:44,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:44,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 13:14:44,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 13:14:44,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:14:44,762 INFO L87 Difference]: Start difference. First operand 352 states and 411 transitions. Second operand has 11 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-24 13:14:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:46,143 INFO L93 Difference]: Finished difference Result 675 states and 785 transitions. [2023-12-24 13:14:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 13:14:46,144 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 99 [2023-12-24 13:14:46,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:46,145 INFO L225 Difference]: With dead ends: 675 [2023-12-24 13:14:46,145 INFO L226 Difference]: Without dead ends: 400 [2023-12-24 13:14:46,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2023-12-24 13:14:46,146 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 420 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:46,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 647 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 13:14:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-12-24 13:14:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 326. [2023-12-24 13:14:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 285 states have (on average 1.1298245614035087) internal successors, (322), 285 states have internal predecessors, (322), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 13:14:46,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 376 transitions. [2023-12-24 13:14:46,167 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 376 transitions. Word has length 99 [2023-12-24 13:14:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:46,168 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 376 transitions. [2023-12-24 13:14:46,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-24 13:14:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 376 transitions. [2023-12-24 13:14:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-24 13:14:46,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:46,169 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:46,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-12-24 13:14:46,380 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 13:14:46,380 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:46,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1503201296, now seen corresponding path program 1 times [2023-12-24 13:14:46,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:46,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024644727] [2023-12-24 13:14:46,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:46,381 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 13:14:46,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:46,382 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 13:14:46,383 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 13:14:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:46,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:14:46,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:46,800 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 38 proven. 21 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-24 13:14:46,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:14:46,869 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:14:46,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:46,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024644727] [2023-12-24 13:14:46,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024644727] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:14:46,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:14:46,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 13:14:46,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124232241] [2023-12-24 13:14:46,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:46,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:14:46,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:46,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:14:46,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:14:46,870 INFO L87 Difference]: Start difference. First operand 326 states and 376 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:46,929 INFO L93 Difference]: Finished difference Result 604 states and 697 transitions. [2023-12-24 13:14:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:14:46,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 99 [2023-12-24 13:14:46,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:46,931 INFO L225 Difference]: With dead ends: 604 [2023-12-24 13:14:46,931 INFO L226 Difference]: Without dead ends: 355 [2023-12-24 13:14:46,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:14:46,932 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 62 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:46,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 273 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:14:46,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-12-24 13:14:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 326. [2023-12-24 13:14:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 285 states have (on average 1.1228070175438596) internal successors, (320), 285 states have internal predecessors, (320), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 13:14:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 374 transitions. [2023-12-24 13:14:46,953 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 374 transitions. Word has length 99 [2023-12-24 13:14:46,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:46,953 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 374 transitions. [2023-12-24 13:14:46,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 374 transitions. [2023-12-24 13:14:46,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-24 13:14:46,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:46,954 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:46,974 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 13:14:47,161 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 13:14:47,161 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:47,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1529651714, now seen corresponding path program 1 times [2023-12-24 13:14:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:47,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202324871] [2023-12-24 13:14:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:47,162 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 13:14:47,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:47,163 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 13:14:47,198 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 (37)] Waiting until timeout for monitored process [2023-12-24 13:14:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:47,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 13:14:47,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:47,422 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 21 treesize of output 17 [2023-12-24 13:14:47,458 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 35 treesize of output 28 [2023-12-24 13:14:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 13:14:47,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:47,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:47,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202324871] [2023-12-24 13:14:47,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202324871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:47,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:47,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 13:14:47,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345547218] [2023-12-24 13:14:47,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:47,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 13:14:47,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:47,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 13:14:47,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:14:47,656 INFO L87 Difference]: Start difference. First operand 326 states and 374 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:48,219 INFO L93 Difference]: Finished difference Result 711 states and 820 transitions. [2023-12-24 13:14:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 13:14:48,220 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 100 [2023-12-24 13:14:48,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:48,221 INFO L225 Difference]: With dead ends: 711 [2023-12-24 13:14:48,221 INFO L226 Difference]: Without dead ends: 462 [2023-12-24 13:14:48,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-24 13:14:48,222 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 183 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:48,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1041 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 13:14:48,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-24 13:14:48,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 320. [2023-12-24 13:14:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 279 states have (on average 1.118279569892473) internal successors, (312), 279 states have internal predecessors, (312), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 13:14:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 366 transitions. [2023-12-24 13:14:48,245 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 366 transitions. Word has length 100 [2023-12-24 13:14:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:48,245 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 366 transitions. [2023-12-24 13:14:48,245 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 366 transitions. [2023-12-24 13:14:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-24 13:14:48,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:48,246 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:48,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-24 13:14:48,452 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 13:14:48,453 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:48,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:48,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1515439328, now seen corresponding path program 1 times [2023-12-24 13:14:48,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:48,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835905202] [2023-12-24 13:14:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:48,454 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 13:14:48,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:48,469 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 13:14:48,488 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 13:14:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:49,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 13:14:49,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:49,083 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 13:14:49,086 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 23 treesize of output 23 [2023-12-24 13:14:49,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:14:49,150 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 72 treesize of output 42 [2023-12-24 13:14:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2023-12-24 13:14:49,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:49,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:49,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835905202] [2023-12-24 13:14:49,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835905202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:49,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:49,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:14:49,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959788700] [2023-12-24 13:14:49,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:49,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:14:49,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:49,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:14:49,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:14:49,184 INFO L87 Difference]: Start difference. First operand 320 states and 366 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:49,436 INFO L93 Difference]: Finished difference Result 617 states and 710 transitions. [2023-12-24 13:14:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 13:14:49,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 189 [2023-12-24 13:14:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:49,447 INFO L225 Difference]: With dead ends: 617 [2023-12-24 13:14:49,447 INFO L226 Difference]: Without dead ends: 486 [2023-12-24 13:14:49,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:14:49,448 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 154 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:49,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 659 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:14:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-12-24 13:14:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 348. [2023-12-24 13:14:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 307 states have (on average 1.1270358306188926) internal successors, (346), 307 states have internal predecessors, (346), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 13:14:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 400 transitions. [2023-12-24 13:14:49,470 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 400 transitions. Word has length 189 [2023-12-24 13:14:49,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:49,471 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 400 transitions. [2023-12-24 13:14:49,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:49,471 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 400 transitions. [2023-12-24 13:14:49,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-24 13:14:49,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:49,472 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:49,483 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 13:14:49,681 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 13:14:49,682 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:49,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:49,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1649452834, now seen corresponding path program 1 times [2023-12-24 13:14:49,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:49,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607241079] [2023-12-24 13:14:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:49,683 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 13:14:49,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:49,684 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 13:14:49,686 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 13:14:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:50,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 13:14:50,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:50,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 13:14:50,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 13:14:50,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 13:14:50,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:14:51,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-12-24 13:14:51,544 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 50 treesize of output 41 [2023-12-24 13:14:51,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:14:51,792 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 21 [2023-12-24 13:14:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 456 proven. 47 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-12-24 13:14:51,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:14:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2023-12-24 13:14:52,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:52,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607241079] [2023-12-24 13:14:52,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607241079] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:14:52,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:14:52,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2023-12-24 13:14:52,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175053850] [2023-12-24 13:14:52,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:52,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:14:52,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:52,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:14:52,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:14:52,083 INFO L87 Difference]: Start difference. First operand 348 states and 400 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:52,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:52,205 INFO L93 Difference]: Finished difference Result 673 states and 771 transitions. [2023-12-24 13:14:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:14:52,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 189 [2023-12-24 13:14:52,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:52,207 INFO L225 Difference]: With dead ends: 673 [2023-12-24 13:14:52,207 INFO L226 Difference]: Without dead ends: 402 [2023-12-24 13:14:52,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-12-24 13:14:52,208 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 79 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:52,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 421 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:14:52,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-24 13:14:52,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 302. [2023-12-24 13:14:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 261 states have (on average 1.103448275862069) internal successors, (288), 261 states have internal predecessors, (288), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 13:14:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 342 transitions. [2023-12-24 13:14:52,229 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 342 transitions. Word has length 189 [2023-12-24 13:14:52,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:52,230 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 342 transitions. [2023-12-24 13:14:52,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:52,230 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 342 transitions. [2023-12-24 13:14:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-24 13:14:52,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:52,231 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:52,239 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 (39)] Forceful destruction successful, exit code 0 [2023-12-24 13:14:52,439 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 13:14:52,441 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:52,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:52,441 INFO L85 PathProgramCache]: Analyzing trace with hash 560442519, now seen corresponding path program 1 times [2023-12-24 13:14:52,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:52,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514041725] [2023-12-24 13:14:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:52,441 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 13:14:52,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:52,442 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 13:14:52,446 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 13:14:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:53,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 13:14:53,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:53,077 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 21 treesize of output 17 [2023-12-24 13:14:53,090 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 35 treesize of output 34 [2023-12-24 13:14:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-12-24 13:14:53,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:53,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:53,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514041725] [2023-12-24 13:14:53,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514041725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:53,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:53,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:14:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396845331] [2023-12-24 13:14:53,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:53,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:14:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:14:53,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:14:53,265 INFO L87 Difference]: Start difference. First operand 302 states and 342 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:53,599 INFO L93 Difference]: Finished difference Result 408 states and 463 transitions. [2023-12-24 13:14:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:14:53,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 193 [2023-12-24 13:14:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:53,601 INFO L225 Difference]: With dead ends: 408 [2023-12-24 13:14:53,602 INFO L226 Difference]: Without dead ends: 406 [2023-12-24 13:14:53,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:14:53,602 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 193 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:53,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 458 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:14:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-12-24 13:14:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 304. [2023-12-24 13:14:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 263 states have (on average 1.102661596958175) internal successors, (290), 263 states have internal predecessors, (290), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 13:14:53,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 344 transitions. [2023-12-24 13:14:53,623 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 344 transitions. Word has length 193 [2023-12-24 13:14:53,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:53,624 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 344 transitions. [2023-12-24 13:14:53,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:14:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 344 transitions. [2023-12-24 13:14:53,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-24 13:14:53,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:53,625 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:53,650 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 (40)] Ended with exit code 0 [2023-12-24 13:14:53,852 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 13:14:53,852 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:53,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:53,852 INFO L85 PathProgramCache]: Analyzing trace with hash -717814482, now seen corresponding path program 1 times [2023-12-24 13:14:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:53,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049617586] [2023-12-24 13:14:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:14:53,853 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 13:14:53,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:53,855 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 13:14:53,876 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 13:14:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:14:54,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 13:14:54,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:14:54,546 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 33 treesize of output 28 [2023-12-24 13:14:54,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 13:14:54,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 13:14:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2023-12-24 13:14:54,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:14:54,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:14:54,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049617586] [2023-12-24 13:14:54,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049617586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:14:54,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:14:54,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 13:14:54,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276131243] [2023-12-24 13:14:54,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:14:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 13:14:54,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:14:54,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 13:14:54,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-24 13:14:54,685 INFO L87 Difference]: Start difference. First operand 304 states and 344 transitions. Second operand has 9 states, 8 states have (on average 11.25) internal successors, (90), 9 states have internal predecessors, (90), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-24 13:14:55,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:14:55,587 INFO L93 Difference]: Finished difference Result 581 states and 656 transitions. [2023-12-24 13:14:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 13:14:55,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 9 states have internal predecessors, (90), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 195 [2023-12-24 13:14:55,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:14:55,589 INFO L225 Difference]: With dead ends: 581 [2023-12-24 13:14:55,589 INFO L226 Difference]: Without dead ends: 431 [2023-12-24 13:14:55,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2023-12-24 13:14:55,590 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 222 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 13:14:55,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 679 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 13:14:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-12-24 13:14:55,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 297. [2023-12-24 13:14:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 256 states have (on average 1.09375) internal successors, (280), 256 states have internal predecessors, (280), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 13:14:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 334 transitions. [2023-12-24 13:14:55,623 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 334 transitions. Word has length 195 [2023-12-24 13:14:55,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:14:55,623 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 334 transitions. [2023-12-24 13:14:55,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 9 states have internal predecessors, (90), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-24 13:14:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 334 transitions. [2023-12-24 13:14:55,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-24 13:14:55,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:14:55,625 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:14:55,637 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 13:14:55,838 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 13:14:55,838 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:14:55,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:14:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash 264339671, now seen corresponding path program 2 times [2023-12-24 13:14:55,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:14:55,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064060025] [2023-12-24 13:14:55,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 13:14:55,839 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 13:14:55,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:14:55,840 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 13:14:55,841 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 13:21:22,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-24 13:21:22,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 13:21:22,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:21:22,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:21:22,307 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 21 treesize of output 17 [2023-12-24 13:21:22,318 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 35 treesize of output 34 [2023-12-24 13:21:22,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:21:22,366 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 29 [2023-12-24 13:21:22,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:21:22,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 13:21:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1532 trivial. 0 not checked. [2023-12-24 13:21:22,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:21:22,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:21:22,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064060025] [2023-12-24 13:21:22,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064060025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:21:22,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:21:22,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:21:22,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774479565] [2023-12-24 13:21:22,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:21:22,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:21:22,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:21:22,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:21:22,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:21:22,393 INFO L87 Difference]: Start difference. First operand 297 states and 334 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:21:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:21:22,718 INFO L93 Difference]: Finished difference Result 517 states and 583 transitions. [2023-12-24 13:21:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:21:22,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 291 [2023-12-24 13:21:22,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:21:22,719 INFO L225 Difference]: With dead ends: 517 [2023-12-24 13:21:22,719 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 13:21:22,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:21:22,720 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 145 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:21:22,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 358 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:21:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 13:21:22,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 13:21:22,721 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 13:21:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 13:21:22,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 291 [2023-12-24 13:21:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:21:22,721 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 13:21:22,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 13:21:22,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 13:21:22,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 13:21:22,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 13:21:22,757 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 (42)] Ended with exit code 0 [2023-12-24 13:21:22,932 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 13:21:22,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 13:22:06,564 WARN L293 SmtUtils]: Spent 43.63s on a formula simplification. DAG size of input: 215 DAG size of output: 191 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 13:22:51,832 WARN L293 SmtUtils]: Spent 45.27s on a formula simplification. DAG size of input: 250 DAG size of output: 252 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 13:23:05,064 WARN L293 SmtUtils]: Spent 11.28s on a formula simplification. DAG size of input: 216 DAG size of output: 215 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 13:24:09,340 WARN L293 SmtUtils]: Spent 54.06s on a formula simplification. DAG size of input: 156 DAG size of output: 138 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 13:24:48,608 WARN L293 SmtUtils]: Spent 39.27s on a formula simplification. DAG size of input: 147 DAG size of output: 96 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 13:25:30,437 WARN L293 SmtUtils]: Spent 41.53s on a formula simplification. DAG size of input: 147 DAG size of output: 131 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 13:26:12,370 WARN L293 SmtUtils]: Spent 40.17s on a formula simplification. DAG size of input: 147 DAG size of output: 96 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 13:26:57,840 WARN L293 SmtUtils]: Spent 42.29s on a formula simplification. DAG size of input: 147 DAG size of output: 131 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-24 13:27:03,510 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∧-2-6-5-2-3-3-3-2-3-2-3-7-5-7-7-6-7-3-7-2-7-7-5-7-6-7-6-7-6-6-6-6-6-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-41-7-6-7-7-7-7-6-7-7-7-7-7-7-6-7-7-7-7-7-7-6-7-6-7-6-7-6-6-6-6-6-2-2-1 context. [2023-12-24 13:27:03,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 13:27:03,516 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 13:27:03,518 INFO L158 Benchmark]: Toolchain (without parser) took 878664.94ms. Allocated memory was 271.6MB in the beginning and 761.3MB in the end (delta: 489.7MB). Free memory was 223.3MB in the beginning and 696.3MB in the end (delta: -473.0MB). Peak memory consumption was 17.7MB. Max. memory is 8.0GB. [2023-12-24 13:27:03,520 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 181.4MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 13:27:03,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.47ms. Allocated memory is still 271.6MB. Free memory was 223.3MB in the beginning and 207.5MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 13:27:03,521 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.66ms. Allocated memory is still 271.6MB. Free memory was 207.5MB in the beginning and 204.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 13:27:03,521 INFO L158 Benchmark]: Boogie Preprocessor took 70.64ms. Allocated memory is still 271.6MB. Free memory was 204.4MB in the beginning and 198.6MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 13:27:03,521 INFO L158 Benchmark]: RCFGBuilder took 3082.00ms. Allocated memory is still 271.6MB. Free memory was 198.6MB in the beginning and 160.4MB in the end (delta: 38.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-24 13:27:03,521 INFO L158 Benchmark]: TraceAbstraction took 875217.47ms. Allocated memory was 271.6MB in the beginning and 761.3MB in the end (delta: 489.7MB). Free memory was 159.3MB in the beginning and 696.3MB in the end (delta: -537.0MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 13:27:03,522 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 181.4MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.47ms. Allocated memory is still 271.6MB. Free memory was 223.3MB in the beginning and 207.5MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.66ms. Allocated memory is still 271.6MB. Free memory was 207.5MB in the beginning and 204.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 70.64ms. Allocated memory is still 271.6MB. Free memory was 204.4MB in the beginning and 198.6MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3082.00ms. Allocated memory is still 271.6MB. Free memory was 198.6MB in the beginning and 160.4MB in the end (delta: 38.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * TraceAbstraction took 875217.47ms. Allocated memory was 271.6MB in the beginning and 761.3MB in the end (delta: 489.7MB). Free memory was 159.3MB in the beginning and 696.3MB in the end (delta: -537.0MB). 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 ∨-9-15-3-6-2-3-3-6-2-4-3-4-3-7-2-7-2-3-2-3-4-4-4-5-3-5-3-5-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-37-15-4-7-4-7-4-7-4-7-4-7-4-7-4-7-4-5-4-5-4-5-4-5-3-5-3-5-2-3-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-12-24 13:27:03,530 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