/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/recursified_loop-simple/recursified_nested_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:48:52,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:48:52,882 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:48:52,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:48:52,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:48:52,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:48:52,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:48:52,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:48:52,913 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:48:52,915 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:48:52,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:48:52,916 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:48:52,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:48:52,917 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:48:52,918 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:48:52,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:48:52,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:48:52,918 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:48:52,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:48:52,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:48:52,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:48:52,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:48:52,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:48:52,919 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:48:52,919 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:48:52,919 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:48:52,920 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:48:52,920 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:48:52,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:48:52,920 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:48:52,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:48:52,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:48:52,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:48:52,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:48:52,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:48:52,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:48:52,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:48:52,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:48:52,922 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:48:52,922 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:48:52,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:48:52,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:48:52,922 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:48:52,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:48:52,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:48:52,923 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:48:52,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:48:53,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:48:53,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:48:53,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:48:53,084 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:48:53,084 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:48:53,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_loop-simple/recursified_nested_4.c [2023-12-16 17:48:54,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:48:54,264 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:48:54,264 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_4.c [2023-12-16 17:48:54,270 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be7c9998/f7441de5515a4aedae03dde7f9018f18/FLAGca65cec48 [2023-12-16 17:48:54,287 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be7c9998/f7441de5515a4aedae03dde7f9018f18 [2023-12-16 17:48:54,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:48:54,291 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:48:54,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:48:54,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:48:54,296 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:48:54,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3255f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54, skipping insertion in model container [2023-12-16 17:48:54,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,317 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:48:54,429 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_4.c[2333,2346] [2023-12-16 17:48:54,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:48:54,440 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:48:54,453 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_4.c[2333,2346] [2023-12-16 17:48:54,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:48:54,463 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:48:54,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54 WrapperNode [2023-12-16 17:48:54,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:48:54,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:48:54,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:48:54,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:48:54,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,495 INFO L138 Inliner]: procedures = 18, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2023-12-16 17:48:54,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:48:54,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:48:54,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:48:54,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:48:54,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,504 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,518 INFO L175 MemorySlicer]: Split 26 memory accesses to 5 slices as follows [2, 6, 6, 6, 6]. 23 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 1, 1, 1, 1]. The 8 writes are split as follows [0, 2, 2, 2, 2]. [2023-12-16 17:48:54,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,523 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:48:54,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:48:54,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:48:54,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:48:54,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (1/1) ... [2023-12-16 17:48:54,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:48:54,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:48:54,568 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) [2023-12-16 17:48:54,574 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 [2023-12-16 17:48:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:48:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:48:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 17:48:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 17:48:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 17:48:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-16 17:48:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-16 17:48:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-16 17:48:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-16 17:48:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-16 17:48:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-16 17:48:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 17:48:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_24_to_25_0 [2023-12-16 17:48:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_24_to_25_0 [2023-12-16 17:48:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_23_to_24_0 [2023-12-16 17:48:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_23_to_24_0 [2023-12-16 17:48:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_22_to_23_0 [2023-12-16 17:48:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_22_to_23_0 [2023-12-16 17:48:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 17:48:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 17:48:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 17:48:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-16 17:48:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-16 17:48:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_25_0 [2023-12-16 17:48:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_25_0 [2023-12-16 17:48:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:48:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:48:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 17:48:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 17:48:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 17:48:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 17:48:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-16 17:48:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-16 17:48:54,659 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:48:54,660 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:48:54,808 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:48:54,831 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:48:54,831 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 17:48:54,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:48:54 BoogieIcfgContainer [2023-12-16 17:48:54,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:48:54,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:48:54,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:48:54,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:48:54,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:48:54" (1/3) ... [2023-12-16 17:48:54,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c11b3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:48:54, skipping insertion in model container [2023-12-16 17:48:54,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:54" (2/3) ... [2023-12-16 17:48:54,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c11b3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:48:54, skipping insertion in model container [2023-12-16 17:48:54,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:48:54" (3/3) ... [2023-12-16 17:48:54,837 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_4.c [2023-12-16 17:48:54,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:48:54,869 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:48:54,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:48:54,901 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;@1a92c86f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:48:54,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:48:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 25 states have (on average 1.36) internal successors, (34), 30 states have internal predecessors, (34), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:48:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 17:48:54,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:54,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:54,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:54,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash 151530631, now seen corresponding path program 1 times [2023-12-16 17:48:54,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:54,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179339962] [2023-12-16 17:48:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:54,921 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 [2023-12-16 17:48:54,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:54,922 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) [2023-12-16 17:48:54,923 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 [2023-12-16 17:48:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:55,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:48:55,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:55,079 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 11 treesize of output 7 [2023-12-16 17:48:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:55,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:55,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:55,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179339962] [2023-12-16 17:48:55,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179339962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:55,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:55,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:48:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79386341] [2023-12-16 17:48:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:55,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:48:55,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:55,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:48:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:55,197 INFO L87 Difference]: Start difference. First operand has 39 states, 25 states have (on average 1.36) internal successors, (34), 30 states have internal predecessors, (34), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:48:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:55,356 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2023-12-16 17:48:55,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:48:55,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-16 17:48:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:55,376 INFO L225 Difference]: With dead ends: 52 [2023-12-16 17:48:55,376 INFO L226 Difference]: Without dead ends: 39 [2023-12-16 17:48:55,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:55,383 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:55,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 44 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:48:55,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-16 17:48:55,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-16 17:48:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.28) internal successors, (32), 29 states have internal predecessors, (32), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-16 17:48:55,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-12-16 17:48:55,416 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 14 [2023-12-16 17:48:55,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:55,417 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-12-16 17:48:55,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:48:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-12-16 17:48:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 17:48:55,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:55,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:55,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 17:48:55,621 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 [2023-12-16 17:48:55,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:55,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:55,622 INFO L85 PathProgramCache]: Analyzing trace with hash 664103599, now seen corresponding path program 1 times [2023-12-16 17:48:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:55,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869656493] [2023-12-16 17:48:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:55,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:55,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:55,624 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) [2023-12-16 17:48:55,641 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 (3)] Waiting until timeout for monitored process [2023-12-16 17:48:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:55,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:48:55,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:55,736 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 11 treesize of output 7 [2023-12-16 17:48:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 17:48:55,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:55,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869656493] [2023-12-16 17:48:55,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869656493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:55,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:55,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:48:55,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245948942] [2023-12-16 17:48:55,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:55,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:48:55,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:55,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:48:55,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:55,810 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:48:55,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:55,945 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2023-12-16 17:48:55,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:48:55,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2023-12-16 17:48:55,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:55,948 INFO L225 Difference]: With dead ends: 78 [2023-12-16 17:48:55,948 INFO L226 Difference]: Without dead ends: 41 [2023-12-16 17:48:55,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:55,949 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:55,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 64 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:48:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-16 17:48:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-16 17:48:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-12-16 17:48:55,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2023-12-16 17:48:55,954 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 25 [2023-12-16 17:48:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:55,954 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2023-12-16 17:48:55,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:48:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2023-12-16 17:48:55,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 17:48:55,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:55,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:55,964 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 [2023-12-16 17:48:56,162 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 [2023-12-16 17:48:56,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:56,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:56,163 INFO L85 PathProgramCache]: Analyzing trace with hash -278430179, now seen corresponding path program 1 times [2023-12-16 17:48:56,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:56,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702349841] [2023-12-16 17:48:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:56,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:56,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:56,165 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) [2023-12-16 17:48:56,166 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 [2023-12-16 17:48:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:56,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:48:56,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:56,268 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 11 treesize of output 7 [2023-12-16 17:48:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:48:56,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:56,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702349841] [2023-12-16 17:48:56,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702349841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:56,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:56,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:48:56,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947290220] [2023-12-16 17:48:56,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:56,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:48:56,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:56,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:48:56,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:56,334 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 17:48:56,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:56,441 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2023-12-16 17:48:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:48:56,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2023-12-16 17:48:56,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:56,445 INFO L225 Difference]: With dead ends: 82 [2023-12-16 17:48:56,445 INFO L226 Difference]: Without dead ends: 43 [2023-12-16 17:48:56,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:56,448 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 13 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:56,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 90 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:48:56,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-16 17:48:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-16 17:48:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 31 states have internal predecessors, (34), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2023-12-16 17:48:56,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2023-12-16 17:48:56,465 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 36 [2023-12-16 17:48:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:56,465 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2023-12-16 17:48:56,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 17:48:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2023-12-16 17:48:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 17:48:56,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:56,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:56,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 17:48:56,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:56,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:56,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:56,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1828459316, now seen corresponding path program 1 times [2023-12-16 17:48:56,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:56,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547957022] [2023-12-16 17:48:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:56,678 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 [2023-12-16 17:48:56,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:56,679 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:48:56,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 17:48:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:56,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:48:56,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:56,783 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 11 treesize of output 7 [2023-12-16 17:48:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:48:56,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:56,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:56,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547957022] [2023-12-16 17:48:56,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547957022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:56,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:56,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:48:56,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539210669] [2023-12-16 17:48:56,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:56,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:48:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:56,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:48:56,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:56,842 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 17:48:56,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:56,934 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2023-12-16 17:48:56,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:48:56,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2023-12-16 17:48:56,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:56,938 INFO L225 Difference]: With dead ends: 86 [2023-12-16 17:48:56,938 INFO L226 Difference]: Without dead ends: 45 [2023-12-16 17:48:56,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:56,943 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 11 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:56,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 131 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:48:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-16 17:48:56,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-16 17:48:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.25) internal successors, (35), 32 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-16 17:48:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2023-12-16 17:48:56,952 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 47 [2023-12-16 17:48:56,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:56,953 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2023-12-16 17:48:56,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 17:48:56,953 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2023-12-16 17:48:56,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 17:48:56,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:56,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:56,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 17:48:57,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:57,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:57,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:57,160 INFO L85 PathProgramCache]: Analyzing trace with hash -7963879, now seen corresponding path program 1 times [2023-12-16 17:48:57,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:57,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044095493] [2023-12-16 17:48:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:57,161 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 [2023-12-16 17:48:57,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:57,162 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) [2023-12-16 17:48:57,163 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 [2023-12-16 17:48:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:57,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 17:48:57,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:57,287 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 11 treesize of output 7 [2023-12-16 17:48:57,299 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 11 treesize of output 7 [2023-12-16 17:48:57,314 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 11 treesize of output 7 [2023-12-16 17:48:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 17:48:57,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:48:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:48:58,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:58,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044095493] [2023-12-16 17:48:58,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044095493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:48:58,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:48:58,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2023-12-16 17:48:58,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441105044] [2023-12-16 17:48:58,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:48:58,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:48:58,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:48:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:48:58,304 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 19 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 16 states have internal predecessors, (48), 8 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 3 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-16 17:48:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:58,705 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2023-12-16 17:48:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:48:58,705 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 16 states have internal predecessors, (48), 8 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 3 states have call predecessors, (15), 8 states have call successors, (15) Word has length 52 [2023-12-16 17:48:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:58,706 INFO L225 Difference]: With dead ends: 90 [2023-12-16 17:48:58,706 INFO L226 Difference]: Without dead ends: 47 [2023-12-16 17:48:58,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-12-16 17:48:58,707 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 14 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:58,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 357 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:48:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-16 17:48:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-12-16 17:48:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 33 states have internal predecessors, (36), 8 states have call successors, (8), 4 states have call predecessors, (8), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-16 17:48:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2023-12-16 17:48:58,711 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 52 [2023-12-16 17:48:58,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:58,711 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2023-12-16 17:48:58,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 16 states have internal predecessors, (48), 8 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 3 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-16 17:48:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2023-12-16 17:48:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 17:48:58,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:58,712 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:58,718 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 [2023-12-16 17:48:58,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:58,916 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:58,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:58,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2067883570, now seen corresponding path program 2 times [2023-12-16 17:48:58,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:58,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276710970] [2023-12-16 17:48:58,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:48:58,917 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 [2023-12-16 17:48:58,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:58,918 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:48:58,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 17:48:59,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:48:59,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:48:59,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-16 17:48:59,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:59,037 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 11 treesize of output 7 [2023-12-16 17:48:59,044 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 11 treesize of output 7 [2023-12-16 17:48:59,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:48:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 17:48:59,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:49:00,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:00,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276710970] [2023-12-16 17:49:00,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276710970] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:00,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:00,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 24 [2023-12-16 17:49:00,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364002448] [2023-12-16 17:49:00,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:00,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 17:49:00,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:00,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 17:49:00,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2023-12-16 17:49:00,686 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 24 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 20 states have internal predecessors, (52), 9 states have call successors, (16), 6 states have call predecessors, (16), 8 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) [2023-12-16 17:49:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:01,244 INFO L93 Difference]: Finished difference Result 94 states and 120 transitions. [2023-12-16 17:49:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 17:49:01,245 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 20 states have internal predecessors, (52), 9 states have call successors, (16), 6 states have call predecessors, (16), 8 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) Word has length 57 [2023-12-16 17:49:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:01,246 INFO L225 Difference]: With dead ends: 94 [2023-12-16 17:49:01,246 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 17:49:01,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2023-12-16 17:49:01,247 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 16 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:01,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 477 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:49:01,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 17:49:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-16 17:49:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 8 states have call successors, (8), 4 states have call predecessors, (8), 10 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-16 17:49:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2023-12-16 17:49:01,252 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 57 [2023-12-16 17:49:01,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:01,252 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2023-12-16 17:49:01,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 20 states have internal predecessors, (52), 9 states have call successors, (16), 6 states have call predecessors, (16), 8 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) [2023-12-16 17:49:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2023-12-16 17:49:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 17:49:01,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:01,253 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:01,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:01,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:01,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:01,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash -40535909, now seen corresponding path program 3 times [2023-12-16 17:49:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034545764] [2023-12-16 17:49:01,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:49:01,459 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 [2023-12-16 17:49:01,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:01,460 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) [2023-12-16 17:49:01,460 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 [2023-12-16 17:49:01,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 17:49:01,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:01,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 17:49:01,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:01,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:01,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 17:49:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 17:49:01,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:01,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-16 17:49:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-16 17:49:02,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:02,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034545764] [2023-12-16 17:49:02,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034545764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:02,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:02,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-16 17:49:02,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959662571] [2023-12-16 17:49:02,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:02,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 17:49:02,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:02,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 17:49:02,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:49:02,151 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 15 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-16 17:49:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:02,636 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2023-12-16 17:49:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 17:49:02,638 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 62 [2023-12-16 17:49:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:02,639 INFO L225 Difference]: With dead ends: 78 [2023-12-16 17:49:02,639 INFO L226 Difference]: Without dead ends: 69 [2023-12-16 17:49:02,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-12-16 17:49:02,640 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 74 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:02,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 137 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:49:02,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-16 17:49:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2023-12-16 17:49:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 8 states have call successors, (8), 5 states have call predecessors, (8), 11 states have return successors, (16), 12 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-16 17:49:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2023-12-16 17:49:02,648 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 62 [2023-12-16 17:49:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:02,648 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2023-12-16 17:49:02,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-16 17:49:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2023-12-16 17:49:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 17:49:02,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:02,649 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:02,653 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 [2023-12-16 17:49:02,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:02,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:02,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:02,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1734471453, now seen corresponding path program 1 times [2023-12-16 17:49:02,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:02,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011641638] [2023-12-16 17:49:02,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:49:02,855 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 [2023-12-16 17:49:02,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:02,856 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:49:02,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 17:49:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:49:02,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-16 17:49:02,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:02,969 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 11 treesize of output 7 [2023-12-16 17:49:02,977 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 11 treesize of output 7 [2023-12-16 17:49:02,991 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 11 treesize of output 7 [2023-12-16 17:49:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 17:49:03,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:49:05,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011641638] [2023-12-16 17:49:05,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011641638] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:05,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:05,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 29 [2023-12-16 17:49:05,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682440443] [2023-12-16 17:49:05,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:05,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 17:49:05,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:05,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 17:49:05,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2023-12-16 17:49:05,489 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 29 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 24 states have internal predecessors, (56), 10 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (19), 7 states have call predecessors, (19), 10 states have call successors, (19) [2023-12-16 17:49:06,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:06,184 INFO L93 Difference]: Finished difference Result 108 states and 137 transitions. [2023-12-16 17:49:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 17:49:06,185 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 24 states have internal predecessors, (56), 10 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (19), 7 states have call predecessors, (19), 10 states have call successors, (19) Word has length 62 [2023-12-16 17:49:06,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:06,186 INFO L225 Difference]: With dead ends: 108 [2023-12-16 17:49:06,186 INFO L226 Difference]: Without dead ends: 57 [2023-12-16 17:49:06,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 17:49:06,187 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 65 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:06,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 484 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:49:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-16 17:49:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-12-16 17:49:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 38 states have internal predecessors, (43), 8 states have call successors, (8), 5 states have call predecessors, (8), 12 states have return successors, (17), 13 states have call predecessors, (17), 8 states have call successors, (17) [2023-12-16 17:49:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2023-12-16 17:49:06,191 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 62 [2023-12-16 17:49:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:06,191 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2023-12-16 17:49:06,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 24 states have internal predecessors, (56), 10 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (19), 7 states have call predecessors, (19), 10 states have call successors, (19) [2023-12-16 17:49:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2023-12-16 17:49:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 17:49:06,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:06,192 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:06,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:06,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:06,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:06,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:06,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1397935186, now seen corresponding path program 2 times [2023-12-16 17:49:06,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:06,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742380443] [2023-12-16 17:49:06,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:49:06,398 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 [2023-12-16 17:49:06,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:06,399 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) [2023-12-16 17:49:06,417 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 [2023-12-16 17:49:06,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 17:49:06,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:06,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:49:06,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-16 17:49:06,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:49:06,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:06,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742380443] [2023-12-16 17:49:06,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742380443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:49:06,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:49:06,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:49:06,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974747243] [2023-12-16 17:49:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:49:06,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:49:06,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:06,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:49:06,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:49:06,481 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 17:49:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:06,500 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2023-12-16 17:49:06,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:49:06,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 67 [2023-12-16 17:49:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:06,504 INFO L225 Difference]: With dead ends: 70 [2023-12-16 17:49:06,505 INFO L226 Difference]: Without dead ends: 65 [2023-12-16 17:49:06,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:49:06,506 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:06,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 127 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:49:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-16 17:49:06,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2023-12-16 17:49:06,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 8 states have call successors, (8), 5 states have call predecessors, (8), 12 states have return successors, (17), 13 states have call predecessors, (17), 8 states have call successors, (17) [2023-12-16 17:49:06,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2023-12-16 17:49:06,521 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 67 [2023-12-16 17:49:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:06,522 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2023-12-16 17:49:06,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 17:49:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2023-12-16 17:49:06,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 17:49:06,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:06,524 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:06,542 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 [2023-12-16 17:49:06,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:06,726 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:06,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:06,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1399782228, now seen corresponding path program 1 times [2023-12-16 17:49:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:06,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607913010] [2023-12-16 17:49:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:49:06,727 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 [2023-12-16 17:49:06,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:06,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:49:06,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 17:49:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:49:06,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-16 17:49:06,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:06,842 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 11 treesize of output 7 [2023-12-16 17:49:06,849 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 11 treesize of output 7 [2023-12-16 17:49:06,861 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 11 treesize of output 7 [2023-12-16 17:49:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-16 17:49:07,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:49:10,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:10,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607913010] [2023-12-16 17:49:10,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607913010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:10,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:10,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22] total 34 [2023-12-16 17:49:10,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431550050] [2023-12-16 17:49:10,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:10,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-16 17:49:10,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:10,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-16 17:49:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 17:49:10,164 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 34 states, 25 states have (on average 2.4) internal successors, (60), 28 states have internal predecessors, (60), 11 states have call successors, (18), 8 states have call predecessors, (18), 12 states have return successors, (21), 9 states have call predecessors, (21), 11 states have call successors, (21) [2023-12-16 17:49:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:11,218 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2023-12-16 17:49:11,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 17:49:11,218 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 25 states have (on average 2.4) internal successors, (60), 28 states have internal predecessors, (60), 11 states have call successors, (18), 8 states have call predecessors, (18), 12 states have return successors, (21), 9 states have call predecessors, (21), 11 states have call successors, (21) Word has length 67 [2023-12-16 17:49:11,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:11,219 INFO L225 Difference]: With dead ends: 116 [2023-12-16 17:49:11,219 INFO L226 Difference]: Without dead ends: 61 [2023-12-16 17:49:11,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=225, Invalid=1415, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 17:49:11,220 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 25 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:11,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 679 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:49:11,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-16 17:49:11,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-16 17:49:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 8 states have call successors, (8), 5 states have call predecessors, (8), 13 states have return successors, (18), 14 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-16 17:49:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2023-12-16 17:49:11,224 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 67 [2023-12-16 17:49:11,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:11,224 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2023-12-16 17:49:11,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 25 states have (on average 2.4) internal successors, (60), 28 states have internal predecessors, (60), 11 states have call successors, (18), 8 states have call predecessors, (18), 12 states have return successors, (21), 9 states have call predecessors, (21), 11 states have call successors, (21) [2023-12-16 17:49:11,224 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2023-12-16 17:49:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 17:49:11,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:11,225 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:11,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:11,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:11,428 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:11,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:11,429 INFO L85 PathProgramCache]: Analyzing trace with hash 192621217, now seen corresponding path program 2 times [2023-12-16 17:49:11,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:11,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820993163] [2023-12-16 17:49:11,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:49:11,429 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 [2023-12-16 17:49:11,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:11,430 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) [2023-12-16 17:49:11,436 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 [2023-12-16 17:49:11,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:49:11,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:11,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-16 17:49:11,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:11,562 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 11 treesize of output 7 [2023-12-16 17:49:11,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:11,577 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 11 treesize of output 7 [2023-12-16 17:49:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-16 17:49:11,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 70 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:49:15,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:15,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820993163] [2023-12-16 17:49:15,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820993163] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:15,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:15,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 26] total 39 [2023-12-16 17:49:15,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162210645] [2023-12-16 17:49:15,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:15,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-16 17:49:15,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:15,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-16 17:49:15,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 17:49:15,920 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 39 states, 29 states have (on average 2.206896551724138) internal successors, (64), 32 states have internal predecessors, (64), 12 states have call successors, (19), 9 states have call predecessors, (19), 14 states have return successors, (23), 11 states have call predecessors, (23), 12 states have call successors, (23) [2023-12-16 17:49:17,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:17,307 INFO L93 Difference]: Finished difference Result 120 states and 149 transitions. [2023-12-16 17:49:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 17:49:17,308 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 29 states have (on average 2.206896551724138) internal successors, (64), 32 states have internal predecessors, (64), 12 states have call successors, (19), 9 states have call predecessors, (19), 14 states have return successors, (23), 11 states have call predecessors, (23), 12 states have call successors, (23) Word has length 72 [2023-12-16 17:49:17,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:17,309 INFO L225 Difference]: With dead ends: 120 [2023-12-16 17:49:17,309 INFO L226 Difference]: Without dead ends: 63 [2023-12-16 17:49:17,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=277, Invalid=1885, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 17:49:17,310 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 49 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:17,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 726 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 17:49:17,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-16 17:49:17,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-12-16 17:49:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.175) internal successors, (47), 42 states have internal predecessors, (47), 8 states have call successors, (8), 5 states have call predecessors, (8), 14 states have return successors, (19), 15 states have call predecessors, (19), 8 states have call successors, (19) [2023-12-16 17:49:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2023-12-16 17:49:17,314 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 72 [2023-12-16 17:49:17,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:17,314 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2023-12-16 17:49:17,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 29 states have (on average 2.206896551724138) internal successors, (64), 32 states have internal predecessors, (64), 12 states have call successors, (19), 9 states have call predecessors, (19), 14 states have return successors, (23), 11 states have call predecessors, (23), 12 states have call successors, (23) [2023-12-16 17:49:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2023-12-16 17:49:17,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 17:49:17,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:17,315 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:17,323 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 (12)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:17,521 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 [2023-12-16 17:49:17,521 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:17,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:17,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1819035222, now seen corresponding path program 3 times [2023-12-16 17:49:17,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:17,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165771790] [2023-12-16 17:49:17,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:49:17,522 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 [2023-12-16 17:49:17,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:17,523 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) [2023-12-16 17:49:17,524 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 (13)] Waiting until timeout for monitored process [2023-12-16 17:49:17,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 17:49:17,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:17,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 17:49:17,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:17,638 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 11 treesize of output 7 [2023-12-16 17:49:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-16 17:49:17,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-12-16 17:49:18,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:18,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165771790] [2023-12-16 17:49:18,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165771790] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:18,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:18,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2023-12-16 17:49:18,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869459930] [2023-12-16 17:49:18,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:18,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:49:18,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:18,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:49:18,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:49:18,177 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 17 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-16 17:49:18,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:18,560 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2023-12-16 17:49:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:49:18,560 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 77 [2023-12-16 17:49:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:18,561 INFO L225 Difference]: With dead ends: 70 [2023-12-16 17:49:18,561 INFO L226 Difference]: Without dead ends: 61 [2023-12-16 17:49:18,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:49:18,562 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:18,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 106 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:49:18,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-16 17:49:18,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-16 17:49:18,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 8 states have call successors, (8), 5 states have call predecessors, (8), 14 states have return successors, (18), 14 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-16 17:49:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2023-12-16 17:49:18,565 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 77 [2023-12-16 17:49:18,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:18,566 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2023-12-16 17:49:18,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-16 17:49:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2023-12-16 17:49:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-16 17:49:18,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:18,567 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 4, 4, 4, 4, 3, 3, 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] [2023-12-16 17:49:18,575 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 [2023-12-16 17:49:18,769 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 [2023-12-16 17:49:18,769 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:18,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash 397799149, now seen corresponding path program 4 times [2023-12-16 17:49:18,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:18,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576307773] [2023-12-16 17:49:18,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:49:18,770 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 [2023-12-16 17:49:18,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:18,771 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) [2023-12-16 17:49:18,772 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 [2023-12-16 17:49:18,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:49:18,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:18,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 17:49:18,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:18,976 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 11 treesize of output 7 [2023-12-16 17:49:18,982 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 11 treesize of output 7 [2023-12-16 17:49:18,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 263 proven. 3 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-12-16 17:49:19,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:19,909 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2023-12-16 17:49:19,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:19,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576307773] [2023-12-16 17:49:19,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576307773] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:19,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:19,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2023-12-16 17:49:19,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149499437] [2023-12-16 17:49:19,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:19,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:49:19,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:19,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:49:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:49:19,911 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 19 states, 13 states have (on average 5.0) internal successors, (65), 16 states have internal predecessors, (65), 10 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (26), 6 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-16 17:49:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:20,421 INFO L93 Difference]: Finished difference Result 120 states and 145 transitions. [2023-12-16 17:49:20,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 17:49:20,436 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 5.0) internal successors, (65), 16 states have internal predecessors, (65), 10 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (26), 6 states have call predecessors, (26), 10 states have call successors, (26) Word has length 140 [2023-12-16 17:49:20,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:20,437 INFO L225 Difference]: With dead ends: 120 [2023-12-16 17:49:20,437 INFO L226 Difference]: Without dead ends: 63 [2023-12-16 17:49:20,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2023-12-16 17:49:20,438 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:20,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 342 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:49:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-16 17:49:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-12-16 17:49:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 8 states have call successors, (8), 5 states have call predecessors, (8), 15 states have return successors, (19), 15 states have call predecessors, (19), 8 states have call successors, (19) [2023-12-16 17:49:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2023-12-16 17:49:20,442 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 140 [2023-12-16 17:49:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:20,442 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2023-12-16 17:49:20,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 5.0) internal successors, (65), 16 states have internal predecessors, (65), 10 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (26), 6 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-16 17:49:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2023-12-16 17:49:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-16 17:49:20,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:20,444 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-12-16 17:49:20,449 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 [2023-12-16 17:49:20,649 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 [2023-12-16 17:49:20,649 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:20,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:20,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1521150445, now seen corresponding path program 5 times [2023-12-16 17:49:20,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:20,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975364866] [2023-12-16 17:49:20,650 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:49:20,650 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 [2023-12-16 17:49:20,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:20,652 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) [2023-12-16 17:49:20,652 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 [2023-12-16 17:49:21,073 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-16 17:49:21,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:21,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-16 17:49:21,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:21,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:21,132 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 11 treesize of output 7 [2023-12-16 17:49:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1908 backedges. 988 proven. 46 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2023-12-16 17:49:21,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1908 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 1830 trivial. 0 not checked. [2023-12-16 17:49:23,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:23,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975364866] [2023-12-16 17:49:23,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975364866] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:23,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:23,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-16 17:49:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896862826] [2023-12-16 17:49:23,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:23,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 17:49:23,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 17:49:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2023-12-16 17:49:23,501 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 26 states, 19 states have (on average 3.736842105263158) internal successors, (71), 21 states have internal predecessors, (71), 12 states have call successors, (27), 7 states have call predecessors, (27), 8 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2023-12-16 17:49:24,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:24,235 INFO L93 Difference]: Finished difference Result 124 states and 149 transitions. [2023-12-16 17:49:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 17:49:24,236 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 3.736842105263158) internal successors, (71), 21 states have internal predecessors, (71), 12 states have call successors, (27), 7 states have call predecessors, (27), 8 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) Word has length 222 [2023-12-16 17:49:24,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:24,236 INFO L225 Difference]: With dead ends: 124 [2023-12-16 17:49:24,236 INFO L226 Difference]: Without dead ends: 65 [2023-12-16 17:49:24,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 17:49:24,237 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 35 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:24,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 328 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:49:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-16 17:49:24,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-12-16 17:49:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.175) internal successors, (47), 43 states have internal predecessors, (47), 8 states have call successors, (8), 5 states have call predecessors, (8), 16 states have return successors, (20), 16 states have call predecessors, (20), 8 states have call successors, (20) [2023-12-16 17:49:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2023-12-16 17:49:24,241 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 222 [2023-12-16 17:49:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:24,241 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2023-12-16 17:49:24,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 3.736842105263158) internal successors, (71), 21 states have internal predecessors, (71), 12 states have call successors, (27), 7 states have call predecessors, (27), 8 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2023-12-16 17:49:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2023-12-16 17:49:24,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-12-16 17:49:24,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:24,243 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 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] [2023-12-16 17:49:24,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:24,449 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 [2023-12-16 17:49:24,449 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:24,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:24,450 INFO L85 PathProgramCache]: Analyzing trace with hash -486906131, now seen corresponding path program 6 times [2023-12-16 17:49:24,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:24,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337721809] [2023-12-16 17:49:24,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:49:24,450 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 [2023-12-16 17:49:24,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:24,451 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) [2023-12-16 17:49:24,452 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 [2023-12-16 17:49:24,669 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-16 17:49:24,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:24,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 17:49:24,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:24,686 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 11 treesize of output 7 [2023-12-16 17:49:24,824 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 19 treesize of output 11 [2023-12-16 17:49:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4273 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4265 trivial. 0 not checked. [2023-12-16 17:49:24,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:25,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-16 17:49:25,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:25,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337721809] [2023-12-16 17:49:25,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337721809] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 17:49:25,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [543819139] [2023-12-16 17:49:25,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:49:25,393 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 17:49:25,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 17:49:25,429 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 17:49:25,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-16 17:49:25,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 17:49:25,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243580999] [2023-12-16 17:49:25,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:49:25,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 17:49:25,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:49:25,750 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 17:49:25,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 17:49:25,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 1 [2023-12-16 17:49:26,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-16 17:49:26,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:26,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 17:49:26,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:26,085 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 11 treesize of output 7 [2023-12-16 17:49:26,229 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 19 treesize of output 11 [2023-12-16 17:49:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4273 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 4240 trivial. 0 not checked. [2023-12-16 17:49:26,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:26,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-16 17:49:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243580999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 17:49:27,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:27,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2023-12-16 17:49:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091197132] [2023-12-16 17:49:27,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:27,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 17:49:27,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 17:49:27,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2023-12-16 17:49:27,149 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 9 states have call successors, (15), 3 states have call predecessors, (15), 7 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2023-12-16 17:49:28,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:28,647 INFO L93 Difference]: Finished difference Result 123 states and 151 transitions. [2023-12-16 17:49:28,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 17:49:28,647 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 9 states have call successors, (15), 3 states have call predecessors, (15), 7 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) Word has length 304 [2023-12-16 17:49:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:28,648 INFO L225 Difference]: With dead ends: 123 [2023-12-16 17:49:28,648 INFO L226 Difference]: Without dead ends: 116 [2023-12-16 17:49:28,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=254, Invalid=2196, Unknown=0, NotChecked=0, Total=2450 [2023-12-16 17:49:28,649 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 87 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:28,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 218 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 17:49:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-16 17:49:28,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 85. [2023-12-16 17:49:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.169811320754717) internal successors, (62), 54 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 22 states have return successors, (36), 24 states have call predecessors, (36), 9 states have call successors, (36) [2023-12-16 17:49:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2023-12-16 17:49:28,655 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 304 [2023-12-16 17:49:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:28,655 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2023-12-16 17:49:28,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 9 states have call successors, (15), 3 states have call predecessors, (15), 7 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2023-12-16 17:49:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2023-12-16 17:49:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-12-16 17:49:28,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:28,657 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 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] [2023-12-16 17:49:28,661 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 [2023-12-16 17:49:28,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-16 17:49:29,061 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=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 17:49:29,061 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:29,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:29,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1289948273, now seen corresponding path program 4 times [2023-12-16 17:49:29,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:29,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776015966] [2023-12-16 17:49:29,063 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:49:29,063 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 [2023-12-16 17:49:29,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:29,064 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) [2023-12-16 17:49:29,064 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 [2023-12-16 17:49:29,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:49:29,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:29,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-16 17:49:29,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:29,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:29,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:29,525 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 11 treesize of output 7 [2023-12-16 17:49:29,561 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 11 treesize of output 7 [2023-12-16 17:49:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4273 backedges. 2191 proven. 125 refuted. 0 times theorem prover too weak. 1957 trivial. 0 not checked. [2023-12-16 17:49:29,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:33,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4273 backedges. 6 proven. 133 refuted. 0 times theorem prover too weak. 4134 trivial. 0 not checked. [2023-12-16 17:49:33,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:33,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776015966] [2023-12-16 17:49:33,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776015966] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:33,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:33,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2023-12-16 17:49:33,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996314791] [2023-12-16 17:49:33,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:33,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-16 17:49:33,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-16 17:49:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 17:49:33,249 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand has 33 states, 23 states have (on average 3.391304347826087) internal successors, (78), 27 states have internal predecessors, (78), 16 states have call successors, (32), 8 states have call predecessors, (32), 10 states have return successors, (34), 12 states have call predecessors, (34), 16 states have call successors, (34) [2023-12-16 17:49:34,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:34,494 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2023-12-16 17:49:34,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 17:49:34,495 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 23 states have (on average 3.391304347826087) internal successors, (78), 27 states have internal predecessors, (78), 16 states have call successors, (32), 8 states have call predecessors, (32), 10 states have return successors, (34), 12 states have call predecessors, (34), 16 states have call successors, (34) Word has length 304 [2023-12-16 17:49:34,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:34,496 INFO L225 Difference]: With dead ends: 168 [2023-12-16 17:49:34,496 INFO L226 Difference]: Without dead ends: 87 [2023-12-16 17:49:34,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=258, Invalid=1634, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 17:49:34,497 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 49 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:34,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 509 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 17:49:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-16 17:49:34,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-16 17:49:34,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 55 states have internal predecessors, (63), 9 states have call successors, (9), 6 states have call predecessors, (9), 23 states have return successors, (37), 25 states have call predecessors, (37), 9 states have call successors, (37) [2023-12-16 17:49:34,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2023-12-16 17:49:34,503 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 304 [2023-12-16 17:49:34,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:34,503 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2023-12-16 17:49:34,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 23 states have (on average 3.391304347826087) internal successors, (78), 27 states have internal predecessors, (78), 16 states have call successors, (32), 8 states have call predecessors, (32), 10 states have return successors, (34), 12 states have call predecessors, (34), 16 states have call successors, (34) [2023-12-16 17:49:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2023-12-16 17:49:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2023-12-16 17:49:34,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:34,505 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 48, 48, 48, 10, 10, 8, 8, 8, 8, 8, 8, 8, 4, 4, 3, 3, 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] [2023-12-16 17:49:34,520 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 [2023-12-16 17:49:34,713 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 [2023-12-16 17:49:34,713 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:34,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:34,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1526004663, now seen corresponding path program 5 times [2023-12-16 17:49:34,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:34,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103080469] [2023-12-16 17:49:34,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:49:34,714 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 [2023-12-16 17:49:34,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:34,715 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) [2023-12-16 17:49:34,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-16 17:49:35,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-12-16 17:49:35,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:35,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-16 17:49:35,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:35,891 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 11 treesize of output 7 [2023-12-16 17:49:35,959 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 11 treesize of output 7 [2023-12-16 17:49:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7594 backedges. 3933 proven. 179 refuted. 0 times theorem prover too weak. 3482 trivial. 0 not checked. [2023-12-16 17:49:36,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 7594 backedges. 6 proven. 215 refuted. 0 times theorem prover too weak. 7373 trivial. 0 not checked. [2023-12-16 17:49:40,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:40,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103080469] [2023-12-16 17:49:40,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103080469] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:40,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:40,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 36 [2023-12-16 17:49:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834983370] [2023-12-16 17:49:40,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:40,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-16 17:49:40,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-16 17:49:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 17:49:40,992 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 36 states, 27 states have (on average 3.0) internal successors, (81), 29 states have internal predecessors, (81), 16 states have call successors, (32), 9 states have call predecessors, (32), 12 states have return successors, (35), 15 states have call predecessors, (35), 16 states have call successors, (35) [2023-12-16 17:49:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:42,513 INFO L93 Difference]: Finished difference Result 172 states and 233 transitions. [2023-12-16 17:49:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:49:42,514 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 27 states have (on average 3.0) internal successors, (81), 29 states have internal predecessors, (81), 16 states have call successors, (32), 9 states have call predecessors, (32), 12 states have return successors, (35), 15 states have call predecessors, (35), 16 states have call successors, (35) Word has length 386 [2023-12-16 17:49:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:42,515 INFO L225 Difference]: With dead ends: 172 [2023-12-16 17:49:42,515 INFO L226 Difference]: Without dead ends: 89 [2023-12-16 17:49:42,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=302, Invalid=1860, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 17:49:42,516 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 83 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:42,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 561 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 17:49:42,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-16 17:49:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-16 17:49:42,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 56 states have internal predecessors, (64), 9 states have call successors, (9), 6 states have call predecessors, (9), 24 states have return successors, (38), 26 states have call predecessors, (38), 9 states have call successors, (38) [2023-12-16 17:49:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2023-12-16 17:49:42,521 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 386 [2023-12-16 17:49:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:42,522 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2023-12-16 17:49:42,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 27 states have (on average 3.0) internal successors, (81), 29 states have internal predecessors, (81), 16 states have call successors, (32), 9 states have call predecessors, (32), 12 states have return successors, (35), 15 states have call predecessors, (35), 16 states have call successors, (35) [2023-12-16 17:49:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2023-12-16 17:49:42,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-16 17:49:42,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:42,524 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 60, 60, 60, 12, 12, 10, 10, 10, 10, 10, 10, 10, 4, 4, 3, 3, 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] [2023-12-16 17:49:42,535 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 (20)] Ended with exit code 0 [2023-12-16 17:49:42,733 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 [2023-12-16 17:49:42,733 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:42,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash -280339343, now seen corresponding path program 6 times [2023-12-16 17:49:42,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:42,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840422249] [2023-12-16 17:49:42,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:49:42,734 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 [2023-12-16 17:49:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:42,735 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) [2023-12-16 17:49:42,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 17:49:43,000 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-16 17:49:43,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:43,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 17:49:43,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:43,020 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 11 treesize of output 7 [2023-12-16 17:49:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 11871 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11863 trivial. 0 not checked. [2023-12-16 17:49:43,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 11871 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11856 trivial. 0 not checked. [2023-12-16 17:49:44,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:44,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840422249] [2023-12-16 17:49:44,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840422249] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:44,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:44,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 22 [2023-12-16 17:49:44,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862556825] [2023-12-16 17:49:44,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:44,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 17:49:44,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:44,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 17:49:44,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-12-16 17:49:44,900 INFO L87 Difference]: Start difference. First operand 89 states and 111 transitions. Second operand has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 9 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) [2023-12-16 17:49:45,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:45,438 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2023-12-16 17:49:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:49:45,438 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 9 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) Word has length 468 [2023-12-16 17:49:45,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:45,439 INFO L225 Difference]: With dead ends: 96 [2023-12-16 17:49:45,439 INFO L226 Difference]: Without dead ends: 87 [2023-12-16 17:49:45,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 914 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2023-12-16 17:49:45,440 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 67 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:45,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 186 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:49:45,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-16 17:49:45,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-16 17:49:45,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 53 states have (on average 1.169811320754717) internal successors, (62), 55 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 24 states have return successors, (36), 25 states have call predecessors, (36), 9 states have call successors, (36) [2023-12-16 17:49:45,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2023-12-16 17:49:45,445 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 468 [2023-12-16 17:49:45,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:45,445 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2023-12-16 17:49:45,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 9 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) [2023-12-16 17:49:45,446 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2023-12-16 17:49:45,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-12-16 17:49:45,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:45,448 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 90, 90, 90, 18, 18, 15, 15, 15, 15, 15, 15, 15, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:45,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:45,651 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 [2023-12-16 17:49:45,652 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:45,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:45,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2036405018, now seen corresponding path program 1 times [2023-12-16 17:49:45,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:45,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720818922] [2023-12-16 17:49:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:49:45,653 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 [2023-12-16 17:49:45,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:45,654 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) [2023-12-16 17:49:45,655 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 [2023-12-16 17:49:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:49:46,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 109 conjunts are in the unsatisfiable core [2023-12-16 17:49:46,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:46,670 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 11 treesize of output 7 [2023-12-16 17:49:46,676 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 11 treesize of output 7 [2023-12-16 17:49:46,684 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 11 treesize of output 7 [2023-12-16 17:49:46,717 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 11 treesize of output 7 [2023-12-16 17:49:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 26874 backedges. 12058 proven. 391 refuted. 0 times theorem prover too weak. 14425 trivial. 0 not checked. [2023-12-16 17:49:47,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 26874 backedges. 8 proven. 546 refuted. 0 times theorem prover too weak. 26320 trivial. 0 not checked. [2023-12-16 17:49:53,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:53,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720818922] [2023-12-16 17:49:53,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720818922] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:53,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:53,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26] total 43 [2023-12-16 17:49:53,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855496051] [2023-12-16 17:49:53,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:53,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-16 17:49:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-16 17:49:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 17:49:53,819 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 43 states, 31 states have (on average 2.838709677419355) internal successors, (88), 35 states have internal predecessors, (88), 20 states have call successors, (36), 10 states have call predecessors, (36), 14 states have return successors, (40), 18 states have call predecessors, (40), 20 states have call successors, (40) [2023-12-16 17:49:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:56,082 INFO L93 Difference]: Finished difference Result 172 states and 229 transitions. [2023-12-16 17:49:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 17:49:56,083 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 31 states have (on average 2.838709677419355) internal successors, (88), 35 states have internal predecessors, (88), 20 states have call successors, (36), 10 states have call predecessors, (36), 14 states have return successors, (40), 18 states have call predecessors, (40), 20 states have call successors, (40) Word has length 695 [2023-12-16 17:49:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:56,084 INFO L225 Difference]: With dead ends: 172 [2023-12-16 17:49:56,084 INFO L226 Difference]: Without dead ends: 89 [2023-12-16 17:49:56,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1401 GetRequests, 1347 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=380, Invalid=2700, Unknown=0, NotChecked=0, Total=3080 [2023-12-16 17:49:56,086 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 134 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:56,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 652 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 17:49:56,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-16 17:49:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-16 17:49:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 56 states have internal predecessors, (63), 9 states have call successors, (9), 6 states have call predecessors, (9), 25 states have return successors, (37), 26 states have call predecessors, (37), 9 states have call successors, (37) [2023-12-16 17:49:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2023-12-16 17:49:56,092 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 695 [2023-12-16 17:49:56,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:56,093 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2023-12-16 17:49:56,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 31 states have (on average 2.838709677419355) internal successors, (88), 35 states have internal predecessors, (88), 20 states have call successors, (36), 10 states have call predecessors, (36), 14 states have return successors, (40), 18 states have call predecessors, (40), 20 states have call successors, (40) [2023-12-16 17:49:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2023-12-16 17:49:56,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2023-12-16 17:49:56,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:56,098 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 108, 108, 108, 21, 21, 18, 18, 18, 18, 18, 18, 18, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:56,138 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 [2023-12-16 17:49:56,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:56,316 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:56,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:56,317 INFO L85 PathProgramCache]: Analyzing trace with hash -780483269, now seen corresponding path program 2 times [2023-12-16 17:49:56,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:56,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042914009] [2023-12-16 17:49:56,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:49:56,318 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 [2023-12-16 17:49:56,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:56,320 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:49:56,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-16 17:49:57,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:49:57,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:57,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 2364 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 17:49:57,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:57,959 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 11 treesize of output 7 [2023-12-16 17:49:57,965 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 11 treesize of output 7 [2023-12-16 17:49:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 38679 backedges. 17358 proven. 3 refuted. 0 times theorem prover too weak. 21318 trivial. 0 not checked. [2023-12-16 17:49:58,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:50:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 38679 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 38625 trivial. 0 not checked. [2023-12-16 17:50:00,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:50:00,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042914009] [2023-12-16 17:50:00,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042914009] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:50:00,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:50:00,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-16 17:50:00,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501839502] [2023-12-16 17:50:00,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:50:00,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 17:50:00,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:50:00,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 17:50:00,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-12-16 17:50:00,729 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 18 states, 13 states have (on average 4.923076923076923) internal successors, (64), 15 states have internal predecessors, (64), 9 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (23), 6 states have call predecessors, (23), 9 states have call successors, (23) [2023-12-16 17:50:01,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:50:01,186 INFO L93 Difference]: Finished difference Result 160 states and 196 transitions. [2023-12-16 17:50:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:50:01,186 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 4.923076923076923) internal successors, (64), 15 states have internal predecessors, (64), 9 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (23), 6 states have call predecessors, (23), 9 states have call successors, (23) Word has length 818 [2023-12-16 17:50:01,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:50:01,187 INFO L225 Difference]: With dead ends: 160 [2023-12-16 17:50:01,187 INFO L226 Difference]: Without dead ends: 75 [2023-12-16 17:50:01,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1639 GetRequests, 1618 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-12-16 17:50:01,188 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 32 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:50:01,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 173 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:50:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-16 17:50:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-16 17:50:01,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 8 states have call successors, (8), 5 states have call predecessors, (8), 21 states have return successors, (25), 21 states have call predecessors, (25), 8 states have call successors, (25) [2023-12-16 17:50:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2023-12-16 17:50:01,192 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 818 [2023-12-16 17:50:01,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:50:01,193 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2023-12-16 17:50:01,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 4.923076923076923) internal successors, (64), 15 states have internal predecessors, (64), 9 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (23), 6 states have call predecessors, (23), 9 states have call successors, (23) [2023-12-16 17:50:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2023-12-16 17:50:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1590 [2023-12-16 17:50:01,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:50:01,205 INFO L195 NwaCegarLoop]: trace histogram [252, 252, 216, 216, 216, 42, 42, 36, 36, 36, 36, 36, 36, 36, 9, 9, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:50:01,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-16 17:50:01,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:50:01,420 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:50:01,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:50:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash -314274903, now seen corresponding path program 7 times [2023-12-16 17:50:01,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:50:01,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315430360] [2023-12-16 17:50:01,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:50:01,422 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 [2023-12-16 17:50:01,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:50:01,423 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) [2023-12-16 17:50:01,425 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 Received shutdown request... [2023-12-16 17:50:04,191 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:50:04,192 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:50:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:50:04,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 4478 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-16 17:50:04,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:50:04,712 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:50:04,754 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 [2023-12-16 17:50:04,913 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 [2023-12-16 17:50:04,913 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 1590 with TraceHistMax 252,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-16 17:50:04,916 INFO L445 BasicCegarLoop]: Path program histogram: [7, 6, 2, 2, 1, 1, 1, 1] [2023-12-16 17:50:04,918 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:50:04,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:50:04 BoogieIcfgContainer [2023-12-16 17:50:04,919 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:50:04,920 INFO L158 Benchmark]: Toolchain (without parser) took 70629.18ms. Allocated memory was 278.9MB in the beginning and 402.7MB in the end (delta: 123.7MB). Free memory was 226.3MB in the beginning and 199.0MB in the end (delta: 27.3MB). Peak memory consumption was 151.6MB. Max. memory is 8.0GB. [2023-12-16 17:50:04,920 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 220.2MB. Free memory is still 169.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:50:04,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.37ms. Allocated memory is still 278.9MB. Free memory was 226.0MB in the beginning and 214.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:50:04,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.89ms. Allocated memory is still 278.9MB. Free memory was 214.5MB in the beginning and 213.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:50:04,920 INFO L158 Benchmark]: Boogie Preprocessor took 33.14ms. Allocated memory is still 278.9MB. Free memory was 213.0MB in the beginning and 210.3MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 17:50:04,920 INFO L158 Benchmark]: RCFGBuilder took 302.27ms. Allocated memory is still 278.9MB. Free memory was 210.3MB in the beginning and 191.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 17:50:04,920 INFO L158 Benchmark]: TraceAbstraction took 70086.52ms. Allocated memory was 278.9MB in the beginning and 402.7MB in the end (delta: 123.7MB). Free memory was 190.1MB in the beginning and 199.0MB in the end (delta: -8.9MB). Peak memory consumption was 116.0MB. Max. memory is 8.0GB. [2023-12-16 17:50:04,921 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 220.2MB. Free memory is still 169.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 171.37ms. Allocated memory is still 278.9MB. Free memory was 226.0MB in the beginning and 214.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.89ms. Allocated memory is still 278.9MB. Free memory was 214.5MB in the beginning and 213.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.14ms. Allocated memory is still 278.9MB. Free memory was 213.0MB in the beginning and 210.3MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 302.27ms. Allocated memory is still 278.9MB. Free memory was 210.3MB in the beginning and 191.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 70086.52ms. Allocated memory was 278.9MB in the beginning and 402.7MB in the end (delta: 123.7MB). Free memory was 190.1MB in the beginning and 199.0MB in the end (delta: -8.9MB). Peak memory consumption was 116.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 111). Cancelled while NwaCegarLoop was analyzing trace of length 1590 with TraceHistMax 252,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.0s, OverallIterations: 21, TraceHistogramMax: 252, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.1s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 906 SdHoareTripleChecker+Valid, 8.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 875 mSDsluCounter, 6391 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5740 mSDsCounter, 513 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6498 IncrementalHoareTripleChecker+Invalid, 7011 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 513 mSolverCounterUnsat, 651 mSDtfsCounter, 6498 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7885 GetRequests, 7375 SyntacticMatches, 0 SemanticMatches, 510 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3232 ImplicationChecksByTransitivity, 15.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=17, InterpolantAutomatonStates: 237, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 40.5s InterpolantComputationTime, 4279 NumberOfCodeBlocks, 3154 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 7726 ConstructedInterpolants, 4 QuantifiedInterpolants, 16652 SizeOfPredicates, 262 NumberOfNonLiveVariables, 10361 ConjunctsInSsa, 792 ConjunctsInUnsatCore, 35 InterpolantComputations, 5 PerfectInterpolantSequences, 190670/192764 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown