/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-44.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:35:26,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:35:26,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 16:35:27,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:35:27,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:35:27,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:35:27,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:35:27,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:35:27,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:35:27,032 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:35:27,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:35:27,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:35:27,032 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:35:27,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:35:27,033 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:35:27,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:35:27,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:35:27,034 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:35:27,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:35:27,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:35:27,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:35:27,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:35:27,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:35:27,035 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:35:27,035 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:35:27,036 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:35:27,036 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:35:27,036 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:35:27,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:35:27,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:35:27,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:35:27,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:35:27,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:35:27,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:35:27,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:35:27,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:35:27,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:35:27,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:35:27,038 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:35:27,039 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:35:27,039 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:35:27,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:35:27,040 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:35:27,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:35:27,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:35:27,040 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:35:27,040 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:35:27,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:35:27,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:35:27,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:35:27,234 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:35:27,234 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:35:27,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-44.i [2023-12-24 16:35:28,229 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:35:28,419 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:35:28,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-44.i [2023-12-24 16:35:28,426 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff53cd366/6fe32b3764c64449aab3f38315a85618/FLAG75fba3faf [2023-12-24 16:35:28,441 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff53cd366/6fe32b3764c64449aab3f38315a85618 [2023-12-24 16:35:28,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:35:28,445 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:35:28,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:35:28,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:35:28,451 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:35:28,451 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72bf815c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28, skipping insertion in model container [2023-12-24 16:35:28,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,484 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:35:28,608 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-44.i[916,929] [2023-12-24 16:35:28,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:35:28,672 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:35:28,682 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-44.i[916,929] [2023-12-24 16:35:28,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:35:28,716 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:35:28,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28 WrapperNode [2023-12-24 16:35:28,717 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:35:28,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:35:28,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:35:28,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:35:28,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,753 INFO L138 Inliner]: procedures = 36, calls = 178, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 522 [2023-12-24 16:35:28,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:35:28,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:35:28,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:35:28,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:35:28,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,769 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,803 INFO L175 MemorySlicer]: Split 131 memory accesses to 16 slices as follows [2, 17, 10, 10, 6, 12, 11, 5, 8, 5, 8, 6, 6, 6, 11, 8]. 13 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 17 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1]. [2023-12-24 16:35:28,804 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,804 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:35:28,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:35:28,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:35:28,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:35:28,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (1/1) ... [2023-12-24 16:35:28,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:35:28,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:35:28,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 16:35:28,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 16:35:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:35:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 16:35:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 16:35:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 16:35:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 16:35:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 16:35:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 16:35:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 16:35:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2023-12-24 16:35:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#8 [2023-12-24 16:35:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#9 [2023-12-24 16:35:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#10 [2023-12-24 16:35:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#11 [2023-12-24 16:35:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#12 [2023-12-24 16:35:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#13 [2023-12-24 16:35:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#14 [2023-12-24 16:35:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#15 [2023-12-24 16:35:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 16:35:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 16:35:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 16:35:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 16:35:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 16:35:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 16:35:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 16:35:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2023-12-24 16:35:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#8 [2023-12-24 16:35:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#9 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#10 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#11 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#12 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#13 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#14 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#15 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:35:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#12 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#13 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#14 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#15 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:35:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#13 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#14 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#15 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 16:35:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 16:35:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 16:35:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-24 16:35:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-24 16:35:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-24 16:35:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2023-12-24 16:35:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#12 [2023-12-24 16:35:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#13 [2023-12-24 16:35:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#14 [2023-12-24 16:35:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#15 [2023-12-24 16:35:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 16:35:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 16:35:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#11 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#12 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#13 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#14 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#15 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 16:35:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 16:35:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 16:35:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 16:35:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 16:35:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 16:35:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2023-12-24 16:35:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#8 [2023-12-24 16:35:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#9 [2023-12-24 16:35:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#10 [2023-12-24 16:35:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#11 [2023-12-24 16:35:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#12 [2023-12-24 16:35:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#13 [2023-12-24 16:35:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#14 [2023-12-24 16:35:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#15 [2023-12-24 16:35:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 16:35:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#12 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#13 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#14 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#15 [2023-12-24 16:35:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 16:35:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 16:35:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 16:35:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 16:35:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 16:35:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 16:35:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 16:35:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-24 16:35:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2023-12-24 16:35:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2023-12-24 16:35:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2023-12-24 16:35:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#11 [2023-12-24 16:35:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#12 [2023-12-24 16:35:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#13 [2023-12-24 16:35:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#14 [2023-12-24 16:35:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#15 [2023-12-24 16:35:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 16:35:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 16:35:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 16:35:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 16:35:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 16:35:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 16:35:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 16:35:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-24 16:35:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2023-12-24 16:35:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2023-12-24 16:35:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2023-12-24 16:35:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#11 [2023-12-24 16:35:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#12 [2023-12-24 16:35:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#13 [2023-12-24 16:35:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#14 [2023-12-24 16:35:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#15 [2023-12-24 16:35:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:35:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:35:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:35:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:35:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:35:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:35:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:35:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:35:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:35:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#12 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#13 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#14 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#15 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 16:35:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-24 16:35:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-24 16:35:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-24 16:35:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2023-12-24 16:35:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#12 [2023-12-24 16:35:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#13 [2023-12-24 16:35:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#14 [2023-12-24 16:35:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#15 [2023-12-24 16:35:29,211 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:35:29,213 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:35:33,218 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:35:33,269 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:35:33,269 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:35:33,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:35:33 BoogieIcfgContainer [2023-12-24 16:35:33,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:35:33,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:35:33,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:35:33,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:35:33,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:35:28" (1/3) ... [2023-12-24 16:35:33,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1408d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:35:33, skipping insertion in model container [2023-12-24 16:35:33,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:35:28" (2/3) ... [2023-12-24 16:35:33,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1408d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:35:33, skipping insertion in model container [2023-12-24 16:35:33,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:35:33" (3/3) ... [2023-12-24 16:35:33,276 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-44.i [2023-12-24 16:35:33,289 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:35:33,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:35:33,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:35:33,337 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;@442ebb1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:35:33,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:35:33,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 87 states have (on average 1.4137931034482758) internal successors, (123), 88 states have internal predecessors, (123), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-24 16:35:33,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 16:35:33,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:35:33,358 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:35:33,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:35:33,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:35:33,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1901818476, now seen corresponding path program 1 times [2023-12-24 16:35:33,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:35:33,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625314515] [2023-12-24 16:35:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:35:33,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:33,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:35:33,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:35:33,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 16:35:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:35:33,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:35:33,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:35:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 436 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-12-24 16:35:33,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:35:33,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:35:33,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625314515] [2023-12-24 16:35:33,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625314515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:35:33,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:35:33,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:35:33,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616259259] [2023-12-24 16:35:33,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:35:33,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:35:33,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:35:33,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:35:33,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:35:33,903 INFO L87 Difference]: Start difference. First operand has 111 states, 87 states have (on average 1.4137931034482758) internal successors, (123), 88 states have internal predecessors, (123), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 16:35:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:35:33,962 INFO L93 Difference]: Finished difference Result 219 states and 349 transitions. [2023-12-24 16:35:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:35:33,965 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 154 [2023-12-24 16:35:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:35:33,972 INFO L225 Difference]: With dead ends: 219 [2023-12-24 16:35:33,972 INFO L226 Difference]: Without dead ends: 109 [2023-12-24 16:35:33,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:35:33,978 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:35:33,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:35:34,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-24 16:35:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-12-24 16:35:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 86 states have (on average 1.372093023255814) internal successors, (118), 86 states have internal predecessors, (118), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-24 16:35:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 160 transitions. [2023-12-24 16:35:34,043 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 160 transitions. Word has length 154 [2023-12-24 16:35:34,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:35:34,044 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 160 transitions. [2023-12-24 16:35:34,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 16:35:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 160 transitions. [2023-12-24 16:35:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 16:35:34,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:35:34,052 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:35:34,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 16:35:34,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:34,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:35:34,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:35:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1643790302, now seen corresponding path program 1 times [2023-12-24 16:35:34,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:35:34,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226126529] [2023-12-24 16:35:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:35:34,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:34,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:35:34,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:35:34,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 16:35:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:35:34,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:35:34,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:35:35,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:35:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:35:35,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:35:35,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:35:35,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226126529] [2023-12-24 16:35:35,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226126529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:35:35,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:35:35,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:35:35,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152214357] [2023-12-24 16:35:35,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:35:35,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:35:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:35:35,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:35:35,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:35:35,055 INFO L87 Difference]: Start difference. First operand 109 states and 160 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:35:36,217 INFO L93 Difference]: Finished difference Result 325 states and 478 transitions. [2023-12-24 16:35:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:35:36,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 154 [2023-12-24 16:35:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:35:36,219 INFO L225 Difference]: With dead ends: 325 [2023-12-24 16:35:36,219 INFO L226 Difference]: Without dead ends: 217 [2023-12-24 16:35:36,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:35:36,221 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 77 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:35:36,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 452 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 16:35:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-24 16:35:36,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 209. [2023-12-24 16:35:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 164 states have (on average 1.3658536585365855) internal successors, (224), 164 states have internal predecessors, (224), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 16:35:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 308 transitions. [2023-12-24 16:35:36,239 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 308 transitions. Word has length 154 [2023-12-24 16:35:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:35:36,239 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 308 transitions. [2023-12-24 16:35:36,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 308 transitions. [2023-12-24 16:35:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 16:35:36,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:35:36,241 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:35:36,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 16:35:36,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:36,451 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:35:36,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:35:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1214618541, now seen corresponding path program 1 times [2023-12-24 16:35:36,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:35:36,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972911243] [2023-12-24 16:35:36,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:35:36,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:36,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:35:36,453 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:35:36,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 16:35:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:35:36,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:35:36,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:35:36,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:35:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:35:37,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:35:37,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:35:37,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972911243] [2023-12-24 16:35:37,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972911243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:35:37,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:35:37,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:35:37,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075074111] [2023-12-24 16:35:37,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:35:37,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:35:37,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:35:37,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:35:37,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:35:37,029 INFO L87 Difference]: Start difference. First operand 209 states and 308 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:40,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:35:41,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:35:41,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:35:41,618 INFO L93 Difference]: Finished difference Result 551 states and 812 transitions. [2023-12-24 16:35:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:35:41,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 155 [2023-12-24 16:35:41,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:35:41,623 INFO L225 Difference]: With dead ends: 551 [2023-12-24 16:35:41,623 INFO L226 Difference]: Without dead ends: 343 [2023-12-24 16:35:41,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:35:41,628 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 344 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:35:41,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 594 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-24 16:35:41,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-12-24 16:35:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 239. [2023-12-24 16:35:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 194 states have (on average 1.3814432989690721) internal successors, (268), 194 states have internal predecessors, (268), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 16:35:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 352 transitions. [2023-12-24 16:35:41,686 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 352 transitions. Word has length 155 [2023-12-24 16:35:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:35:41,687 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 352 transitions. [2023-12-24 16:35:41,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 352 transitions. [2023-12-24 16:35:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 16:35:41,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:35:41,689 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:35:41,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-24 16:35:41,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:41,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:35:41,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:35:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash -783367389, now seen corresponding path program 1 times [2023-12-24 16:35:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:35:41,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726154676] [2023-12-24 16:35:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:35:41,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:41,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:35:41,901 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:35:41,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 16:35:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:35:42,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:35:42,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:35:42,298 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:35:42,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:35:42,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:35:42,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726154676] [2023-12-24 16:35:42,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726154676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:35:42,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:35:42,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:35:42,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370631283] [2023-12-24 16:35:42,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:35:42,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:35:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:35:42,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:35:42,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:35:42,301 INFO L87 Difference]: Start difference. First operand 239 states and 352 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:35:42,390 INFO L93 Difference]: Finished difference Result 495 states and 727 transitions. [2023-12-24 16:35:42,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:35:42,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 156 [2023-12-24 16:35:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:35:42,393 INFO L225 Difference]: With dead ends: 495 [2023-12-24 16:35:42,393 INFO L226 Difference]: Without dead ends: 257 [2023-12-24 16:35:42,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:35:42,395 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 10 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:35:42,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 600 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:35:42,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-24 16:35:42,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 247. [2023-12-24 16:35:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 202 states have (on average 1.3663366336633664) internal successors, (276), 202 states have internal predecessors, (276), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 16:35:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 360 transitions. [2023-12-24 16:35:42,422 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 360 transitions. Word has length 156 [2023-12-24 16:35:42,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:35:42,423 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 360 transitions. [2023-12-24 16:35:42,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 360 transitions. [2023-12-24 16:35:42,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 16:35:42,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:35:42,425 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:35:42,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 16:35:42,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:42,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:35:42,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:35:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash -783307807, now seen corresponding path program 1 times [2023-12-24 16:35:42,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:35:42,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528678694] [2023-12-24 16:35:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:35:42,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:42,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:35:42,640 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:35:42,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 16:35:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:35:43,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:35:43,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:35:43,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:35:43,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 16:35:43,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:35:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-24 16:35:44,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:35:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:35:44,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:35:44,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528678694] [2023-12-24 16:35:44,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528678694] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:35:44,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:35:44,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-12-24 16:35:44,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991379526] [2023-12-24 16:35:44,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:35:44,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:35:44,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:35:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:35:44,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:35:44,413 INFO L87 Difference]: Start difference. First operand 247 states and 360 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:46,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:35:49,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:35:49,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:35:49,301 INFO L93 Difference]: Finished difference Result 625 states and 900 transitions. [2023-12-24 16:35:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:35:49,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 156 [2023-12-24 16:35:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:35:49,304 INFO L225 Difference]: With dead ends: 625 [2023-12-24 16:35:49,304 INFO L226 Difference]: Without dead ends: 379 [2023-12-24 16:35:49,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:35:49,305 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 110 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:35:49,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 761 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-24 16:35:49,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-24 16:35:49,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 329. [2023-12-24 16:35:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 278 states have (on average 1.3597122302158273) internal successors, (378), 280 states have internal predecessors, (378), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 16:35:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 470 transitions. [2023-12-24 16:35:49,336 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 470 transitions. Word has length 156 [2023-12-24 16:35:49,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:35:49,336 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 470 transitions. [2023-12-24 16:35:49,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 470 transitions. [2023-12-24 16:35:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 16:35:49,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:35:49,338 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:35:49,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 16:35:49,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:49,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:35:49,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:35:49,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1001571200, now seen corresponding path program 1 times [2023-12-24 16:35:49,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:35:49,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828738474] [2023-12-24 16:35:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:35:49,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:49,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:35:49,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:35:49,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 16:35:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:35:49,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:35:49,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:35:50,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:35:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:35:50,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:35:50,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:35:50,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828738474] [2023-12-24 16:35:50,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828738474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:35:50,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:35:50,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:35:50,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593248170] [2023-12-24 16:35:50,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:35:50,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:35:50,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:35:50,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:35:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:35:50,223 INFO L87 Difference]: Start difference. First operand 329 states and 470 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:51,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:35:52,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:35:52,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:35:52,756 INFO L93 Difference]: Finished difference Result 677 states and 964 transitions. [2023-12-24 16:35:52,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:35:52,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 157 [2023-12-24 16:35:52,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:35:52,759 INFO L225 Difference]: With dead ends: 677 [2023-12-24 16:35:52,759 INFO L226 Difference]: Without dead ends: 349 [2023-12-24 16:35:52,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:35:52,760 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 99 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:35:52,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 457 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 16:35:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-24 16:35:52,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 329. [2023-12-24 16:35:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 278 states have (on average 1.3525179856115108) internal successors, (376), 280 states have internal predecessors, (376), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 16:35:52,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 468 transitions. [2023-12-24 16:35:52,772 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 468 transitions. Word has length 157 [2023-12-24 16:35:52,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:35:52,772 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 468 transitions. [2023-12-24 16:35:52,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:52,772 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 468 transitions. [2023-12-24 16:35:52,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 16:35:52,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:35:52,774 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:35:52,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 16:35:52,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:52,984 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:35:52,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:35:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash 935978003, now seen corresponding path program 1 times [2023-12-24 16:35:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:35:52,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135015785] [2023-12-24 16:35:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:35:52,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:52,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:35:52,987 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:35:52,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 16:35:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:35:53,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:35:53,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:35:53,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:35:53,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 16:35:53,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 16:35:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:35:53,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:35:53,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:35:53,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135015785] [2023-12-24 16:35:53,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135015785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:35:53,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:35:53,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:35:53,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7017210] [2023-12-24 16:35:53,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:35:53,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:35:53,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:35:53,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:35:53,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:35:53,523 INFO L87 Difference]: Start difference. First operand 329 states and 468 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:55,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:35:57,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:35:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:35:57,331 INFO L93 Difference]: Finished difference Result 881 states and 1253 transitions. [2023-12-24 16:35:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:35:57,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 159 [2023-12-24 16:35:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:35:57,353 INFO L225 Difference]: With dead ends: 881 [2023-12-24 16:35:57,354 INFO L226 Difference]: Without dead ends: 553 [2023-12-24 16:35:57,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:35:57,355 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 156 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:35:57,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 564 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-24 16:35:57,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-12-24 16:35:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 551. [2023-12-24 16:35:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 454 states have (on average 1.3325991189427313) internal successors, (605), 456 states have internal predecessors, (605), 88 states have call successors, (88), 8 states have call predecessors, (88), 8 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-24 16:35:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 781 transitions. [2023-12-24 16:35:57,410 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 781 transitions. Word has length 159 [2023-12-24 16:35:57,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:35:57,411 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 781 transitions. [2023-12-24 16:35:57,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:57,411 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 781 transitions. [2023-12-24 16:35:57,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 16:35:57,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:35:57,412 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:35:57,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 16:35:57,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:57,623 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:35:57,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:35:57,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1346789513, now seen corresponding path program 1 times [2023-12-24 16:35:57,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:35:57,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620201664] [2023-12-24 16:35:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:35:57,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:35:57,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:35:57,641 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:35:57,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 16:35:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:35:58,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:35:58,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:35:58,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:35:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 16:35:58,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:35:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:35:58,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:35:58,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620201664] [2023-12-24 16:35:58,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620201664] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:35:58,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:35:58,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2023-12-24 16:35:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026849754] [2023-12-24 16:35:58,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:35:58,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:35:58,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:35:58,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:35:58,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:35:58,427 INFO L87 Difference]: Start difference. First operand 551 states and 781 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:35:59,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:36:01,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:36:03,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:36:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:36:03,155 INFO L93 Difference]: Finished difference Result 1397 states and 1970 transitions. [2023-12-24 16:36:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:36:03,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 160 [2023-12-24 16:36:03,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:36:03,159 INFO L225 Difference]: With dead ends: 1397 [2023-12-24 16:36:03,159 INFO L226 Difference]: Without dead ends: 847 [2023-12-24 16:36:03,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:36:03,161 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 219 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:36:03,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 995 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-24 16:36:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-24 16:36:03,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 701. [2023-12-24 16:36:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 584 states have (on average 1.321917808219178) internal successors, (772), 588 states have internal predecessors, (772), 104 states have call successors, (104), 12 states have call predecessors, (104), 12 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 16:36:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 980 transitions. [2023-12-24 16:36:03,187 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 980 transitions. Word has length 160 [2023-12-24 16:36:03,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:36:03,189 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 980 transitions. [2023-12-24 16:36:03,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:36:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 980 transitions. [2023-12-24 16:36:03,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 16:36:03,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:36:03,191 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:36:03,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 16:36:03,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:36:03,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:36:03,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:36:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1749543182, now seen corresponding path program 1 times [2023-12-24 16:36:03,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:36:03,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108453564] [2023-12-24 16:36:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:36:03,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:36:03,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:36:03,407 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:36:03,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 16:36:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:36:03,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:36:03,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:36:03,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:36:03,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 16:36:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:36:03,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:36:03,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:36:03,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108453564] [2023-12-24 16:36:03,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108453564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:36:03,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:36:03,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:36:03,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25580097] [2023-12-24 16:36:03,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:36:03,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:36:03,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:36:03,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:36:03,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:36:03,976 INFO L87 Difference]: Start difference. First operand 701 states and 980 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:36:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:36:04,554 INFO L93 Difference]: Finished difference Result 2109 states and 2935 transitions. [2023-12-24 16:36:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:36:04,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 160 [2023-12-24 16:36:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:36:04,570 INFO L225 Difference]: With dead ends: 2109 [2023-12-24 16:36:04,570 INFO L226 Difference]: Without dead ends: 1409 [2023-12-24 16:36:04,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:36:04,571 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 381 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:36:04,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 590 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:36:04,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2023-12-24 16:36:04,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 825. [2023-12-24 16:36:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 708 states have (on average 1.3418079096045197) internal successors, (950), 712 states have internal predecessors, (950), 104 states have call successors, (104), 12 states have call predecessors, (104), 12 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 16:36:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1158 transitions. [2023-12-24 16:36:04,600 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1158 transitions. Word has length 160 [2023-12-24 16:36:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:36:04,601 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1158 transitions. [2023-12-24 16:36:04,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:36:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1158 transitions. [2023-12-24 16:36:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 16:36:04,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:36:04,602 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:36:04,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 16:36:04,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:36:04,814 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:36:04,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:36:04,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1162737168, now seen corresponding path program 1 times [2023-12-24 16:36:04,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:36:04,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228673627] [2023-12-24 16:36:04,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:36:04,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:36:04,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:36:04,819 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:36:04,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 16:36:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:36:05,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:36:05,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:36:05,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-12-24 16:36:05,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-12-24 16:36:05,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 16:36:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-24 16:36:05,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:36:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:36:06,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:36:06,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228673627] [2023-12-24 16:36:06,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228673627] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:36:06,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:36:06,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-12-24 16:36:06,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149428752] [2023-12-24 16:36:06,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:36:06,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:36:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:36:06,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:36:06,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:36:06,372 INFO L87 Difference]: Start difference. First operand 825 states and 1158 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:36:09,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:36:09,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:36:09,550 INFO L93 Difference]: Finished difference Result 1641 states and 2298 transitions. [2023-12-24 16:36:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:36:09,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 160 [2023-12-24 16:36:09,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:36:09,553 INFO L225 Difference]: With dead ends: 1641 [2023-12-24 16:36:09,553 INFO L226 Difference]: Without dead ends: 817 [2023-12-24 16:36:09,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:36:09,555 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 151 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:36:09,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 433 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 16:36:09,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-12-24 16:36:09,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 717. [2023-12-24 16:36:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 604 states have (on average 1.3327814569536425) internal successors, (805), 606 states have internal predecessors, (805), 100 states have call successors, (100), 12 states have call predecessors, (100), 12 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 16:36:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1005 transitions. [2023-12-24 16:36:09,580 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1005 transitions. Word has length 160 [2023-12-24 16:36:09,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:36:09,580 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1005 transitions. [2023-12-24 16:36:09,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:36:09,580 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1005 transitions. [2023-12-24 16:36:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 16:36:09,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:36:09,581 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:36:09,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 16:36:09,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:36:09,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:36:09,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:36:09,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1029424950, now seen corresponding path program 1 times [2023-12-24 16:36:09,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:36:09,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965090952] [2023-12-24 16:36:09,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:36:09,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:36:09,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:36:09,795 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:36:09,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 16:36:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:36:10,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:36:10,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:36:10,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:36:10,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 16:36:10,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 16:36:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:36:10,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:36:10,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:36:10,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965090952] [2023-12-24 16:36:10,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965090952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:36:10,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:36:10,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:36:10,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498031717] [2023-12-24 16:36:10,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:36:10,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:36:10,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:36:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:36:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:36:10,311 INFO L87 Difference]: Start difference. First operand 717 states and 1005 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:36:13,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:36:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:36:15,274 INFO L93 Difference]: Finished difference Result 1532 states and 2141 transitions. [2023-12-24 16:36:15,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:36:15,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 160 [2023-12-24 16:36:15,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:36:15,278 INFO L225 Difference]: With dead ends: 1532 [2023-12-24 16:36:15,278 INFO L226 Difference]: Without dead ends: 816 [2023-12-24 16:36:15,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:36:15,279 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 488 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:36:15,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 619 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-24 16:36:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-24 16:36:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 717. [2023-12-24 16:36:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 604 states have (on average 1.3294701986754967) internal successors, (803), 606 states have internal predecessors, (803), 100 states have call successors, (100), 12 states have call predecessors, (100), 12 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 16:36:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1003 transitions. [2023-12-24 16:36:15,305 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1003 transitions. Word has length 160 [2023-12-24 16:36:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:36:15,305 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1003 transitions. [2023-12-24 16:36:15,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:36:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1003 transitions. [2023-12-24 16:36:15,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 16:36:15,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:36:15,307 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:36:15,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 16:36:15,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:36:15,518 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:36:15,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:36:15,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1945903079, now seen corresponding path program 1 times [2023-12-24 16:36:15,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:36:15,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373721863] [2023-12-24 16:36:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:36:15,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:36:15,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:36:15,520 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:36:15,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 16:36:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:36:15,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:36:15,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:36:16,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:36:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 5 proven. 375 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2023-12-24 16:36:16,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:36:16,580 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:36:16,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2023-12-24 16:36:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-12-24 16:36:16,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:36:16,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373721863] [2023-12-24 16:36:16,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373721863] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:36:16,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:36:16,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-12-24 16:36:16,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610748678] [2023-12-24 16:36:16,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:36:16,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:36:16,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:36:16,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:36:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:36:16,710 INFO L87 Difference]: Start difference. First operand 717 states and 1003 transitions. Second operand has 12 states, 10 states have (on average 7.1) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:36:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:36:17,895 INFO L93 Difference]: Finished difference Result 1133 states and 1573 transitions. [2023-12-24 16:36:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:36:17,903 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.1) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) Word has length 160 [2023-12-24 16:36:17,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:36:17,906 INFO L225 Difference]: With dead ends: 1133 [2023-12-24 16:36:17,906 INFO L226 Difference]: Without dead ends: 753 [2023-12-24 16:36:17,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:36:17,907 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 206 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:36:17,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 680 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 16:36:17,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-24 16:36:17,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 733. [2023-12-24 16:36:17,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 616 states have (on average 1.3116883116883118) internal successors, (808), 618 states have internal predecessors, (808), 100 states have call successors, (100), 16 states have call predecessors, (100), 16 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 16:36:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1008 transitions. [2023-12-24 16:36:17,958 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1008 transitions. Word has length 160 [2023-12-24 16:36:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:36:17,958 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1008 transitions. [2023-12-24 16:36:17,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.1) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:36:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1008 transitions. [2023-12-24 16:36:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-24 16:36:17,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:36:17,960 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:36:17,984 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 (13)] Ended with exit code 0 [2023-12-24 16:36:18,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:36:18,171 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:36:18,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:36:18,172 INFO L85 PathProgramCache]: Analyzing trace with hash 878978584, now seen corresponding path program 1 times [2023-12-24 16:36:18,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:36:18,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422417929] [2023-12-24 16:36:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:36:18,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:36:18,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:36:18,181 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:36:18,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 16:36:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:36:18,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:36:18,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:36:21,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-12-24 16:36:22,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 16:36:22,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-24 16:36:23,024 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 1 proven. 467 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-24 16:36:23,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:36:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:36:28,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:36:28,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422417929] [2023-12-24 16:36:28,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422417929] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:36:28,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:36:28,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 22 [2023-12-24 16:36:28,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758766288] [2023-12-24 16:36:28,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:36:28,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:36:28,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:36:28,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:36:28,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:36:28,968 INFO L87 Difference]: Start difference. First operand 733 states and 1008 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:36:32,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:36:38,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:36:40,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:36:41,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:36:41,198 INFO L93 Difference]: Finished difference Result 1763 states and 2420 transitions. [2023-12-24 16:36:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:36:41,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 161 [2023-12-24 16:36:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:36:41,211 INFO L225 Difference]: With dead ends: 1763 [2023-12-24 16:36:41,211 INFO L226 Difference]: Without dead ends: 1031 [2023-12-24 16:36:41,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:36:41,213 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 146 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:36:41,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1235 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-24 16:36:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-12-24 16:36:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 741. [2023-12-24 16:36:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 624 states have (on average 1.3076923076923077) internal successors, (816), 626 states have internal predecessors, (816), 100 states have call successors, (100), 16 states have call predecessors, (100), 16 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 16:36:41,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1016 transitions. [2023-12-24 16:36:41,244 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1016 transitions. Word has length 161 [2023-12-24 16:36:41,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:36:41,244 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1016 transitions. [2023-12-24 16:36:41,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:36:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1016 transitions. [2023-12-24 16:36:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-24 16:36:41,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:36:41,247 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:36:41,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 16:36:41,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:36:41,458 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:36:41,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:36:41,459 INFO L85 PathProgramCache]: Analyzing trace with hash -457443436, now seen corresponding path program 1 times [2023-12-24 16:36:41,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:36:41,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747678175] [2023-12-24 16:36:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:36:41,459 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 [2023-12-24 16:36:41,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:36:41,474 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:36:41,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 16:36:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:36:41,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 16:36:41,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:36:45,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-12-24 16:36:46,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 16:36:46,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-24 16:36:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 13 proven. 607 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 16:36:46,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:36:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:36:53,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:36:53,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747678175] [2023-12-24 16:36:53,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747678175] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:36:53,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:36:53,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 26 [2023-12-24 16:36:53,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714390347] [2023-12-24 16:36:53,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:36:53,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:36:53,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:36:53,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:36:53,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:36:53,157 INFO L87 Difference]: Start difference. First operand 741 states and 1016 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:36:59,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:37:04,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:37:06,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:37:07,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:37:08,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:37:10,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:37:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:37:11,761 INFO L93 Difference]: Finished difference Result 1961 states and 2675 transitions. [2023-12-24 16:37:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:37:11,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 161 [2023-12-24 16:37:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:37:11,773 INFO L225 Difference]: With dead ends: 1961 [2023-12-24 16:37:11,773 INFO L226 Difference]: Without dead ends: 1221 [2023-12-24 16:37:11,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2023-12-24 16:37:11,775 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 362 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:37:11,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1279 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2023-12-24 16:37:11,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2023-12-24 16:37:11,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 741. [2023-12-24 16:37:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 624 states have (on average 1.3076923076923077) internal successors, (816), 626 states have internal predecessors, (816), 100 states have call successors, (100), 16 states have call predecessors, (100), 16 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 16:37:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1016 transitions. [2023-12-24 16:37:11,808 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1016 transitions. Word has length 161 [2023-12-24 16:37:11,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:37:11,808 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1016 transitions. [2023-12-24 16:37:11,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:37:11,808 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1016 transitions. [2023-12-24 16:37:11,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-24 16:37:11,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:37:11,809 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:37:11,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 16:37:12,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:37:12,021 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:37:12,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:37:12,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1044249450, now seen corresponding path program 1 times [2023-12-24 16:37:12,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:37:12,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669459373] [2023-12-24 16:37:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:37:12,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:37:12,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:37:12,024 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:37:12,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 16:37:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:37:12,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:37:12,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:37:12,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:37:12,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:37:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:37:12,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:37:12,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:37:12,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669459373] [2023-12-24 16:37:12,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669459373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:37:12,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:37:12,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:37:12,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862486685] [2023-12-24 16:37:12,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:37:12,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:37:12,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:37:12,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:37:12,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:37:12,692 INFO L87 Difference]: Start difference. First operand 741 states and 1016 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:37:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:37:13,298 INFO L93 Difference]: Finished difference Result 1717 states and 2347 transitions. [2023-12-24 16:37:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:37:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 161 [2023-12-24 16:37:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:37:13,302 INFO L225 Difference]: With dead ends: 1717 [2023-12-24 16:37:13,302 INFO L226 Difference]: Without dead ends: 977 [2023-12-24 16:37:13,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:37:13,305 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 256 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:37:13,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 738 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:37:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-12-24 16:37:13,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 713. [2023-12-24 16:37:13,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 596 states have (on average 1.2986577181208054) internal successors, (774), 598 states have internal predecessors, (774), 100 states have call successors, (100), 16 states have call predecessors, (100), 16 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 16:37:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 974 transitions. [2023-12-24 16:37:13,337 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 974 transitions. Word has length 161 [2023-12-24 16:37:13,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:37:13,337 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 974 transitions. [2023-12-24 16:37:13,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:37:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 974 transitions. [2023-12-24 16:37:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:37:13,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:37:13,339 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:37:13,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 16:37:13,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:37:13,551 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:37:13,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:37:13,551 INFO L85 PathProgramCache]: Analyzing trace with hash -212092976, now seen corresponding path program 1 times [2023-12-24 16:37:13,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:37:13,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872089941] [2023-12-24 16:37:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:37:13,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:37:13,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:37:13,553 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:37:13,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 16:37:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:37:14,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:37:14,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:37:15,053 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 17 treesize of output 13 [2023-12-24 16:37:15,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2023-12-24 16:37:15,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 16:37:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 41 proven. 456 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-12-24 16:37:15,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:37:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:37:15,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:37:15,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872089941] [2023-12-24 16:37:15,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872089941] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:37:15,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:37:15,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2023-12-24 16:37:15,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405846901] [2023-12-24 16:37:15,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:37:15,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:37:15,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:37:15,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:37:15,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:37:15,552 INFO L87 Difference]: Start difference. First operand 713 states and 974 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:37:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:37:16,336 INFO L93 Difference]: Finished difference Result 2087 states and 2831 transitions. [2023-12-24 16:37:16,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 16:37:16,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 162 [2023-12-24 16:37:16,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:37:16,340 INFO L225 Difference]: With dead ends: 2087 [2023-12-24 16:37:16,340 INFO L226 Difference]: Without dead ends: 1375 [2023-12-24 16:37:16,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 16:37:16,342 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 371 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:37:16,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1224 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:37:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2023-12-24 16:37:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1143. [2023-12-24 16:37:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 954 states have (on average 1.250524109014675) internal successors, (1193), 962 states have internal predecessors, (1193), 160 states have call successors, (160), 28 states have call predecessors, (160), 28 states have return successors, (160), 152 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-24 16:37:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1513 transitions. [2023-12-24 16:37:16,407 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1513 transitions. Word has length 162 [2023-12-24 16:37:16,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:37:16,407 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1513 transitions. [2023-12-24 16:37:16,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:37:16,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1513 transitions. [2023-12-24 16:37:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:37:16,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:37:16,409 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:37:16,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 16:37:16,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:37:16,621 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:37:16,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:37:16,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2088729614, now seen corresponding path program 1 times [2023-12-24 16:37:16,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:37:16,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210089530] [2023-12-24 16:37:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:37:16,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:37:16,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:37:16,623 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:37:16,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 16:37:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:37:24,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:37:24,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:37:24,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:37:24,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 65 [2023-12-24 16:37:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 16:37:24,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:37:24,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:37:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210089530] [2023-12-24 16:37:24,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210089530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:37:24,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:37:24,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:37:24,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676751748] [2023-12-24 16:37:24,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:37:24,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:37:24,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:37:24,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:37:24,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:37:24,549 INFO L87 Difference]: Start difference. First operand 1143 states and 1513 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 16:37:28,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 16:37:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:37:28,609 INFO L93 Difference]: Finished difference Result 2309 states and 3061 transitions. [2023-12-24 16:37:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:37:28,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2023-12-24 16:37:28,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:37:28,613 INFO L225 Difference]: With dead ends: 2309 [2023-12-24 16:37:28,613 INFO L226 Difference]: Without dead ends: 1167 [2023-12-24 16:37:28,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:37:28,616 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 125 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:37:28,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 492 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-24 16:37:28,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2023-12-24 16:37:28,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1143. [2023-12-24 16:37:28,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 954 states have (on average 1.2463312368972745) internal successors, (1189), 962 states have internal predecessors, (1189), 160 states have call successors, (160), 28 states have call predecessors, (160), 28 states have return successors, (160), 152 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-24 16:37:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1509 transitions. [2023-12-24 16:37:28,664 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1509 transitions. Word has length 162 [2023-12-24 16:37:28,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:37:28,664 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1509 transitions. [2023-12-24 16:37:28,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 16:37:28,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1509 transitions. [2023-12-24 16:37:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 16:37:28,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:37:28,665 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:37:28,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 16:37:28,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:37:28,879 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:37:28,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:37:28,879 INFO L85 PathProgramCache]: Analyzing trace with hash -707023992, now seen corresponding path program 1 times [2023-12-24 16:37:28,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:37:28,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611624770] [2023-12-24 16:37:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:37:28,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:37:28,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:37:28,881 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:37:28,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 16:38:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:38:18,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 16:38:18,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:38:19,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:38:22,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 16:38:24,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 36 [2023-12-24 16:38:24,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-12-24 16:38:24,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 16:38:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 1 proven. 467 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-24 16:38:25,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:38:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:38:37,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:38:37,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611624770] [2023-12-24 16:38:37,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611624770] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:38:37,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:38:37,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 20 [2023-12-24 16:38:37,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350479399] [2023-12-24 16:38:37,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:38:37,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:38:37,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:38:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:38:37,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=313, Unknown=1, NotChecked=0, Total=380 [2023-12-24 16:38:37,900 INFO L87 Difference]: Start difference. First operand 1143 states and 1509 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:38:41,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:38:42,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:38:50,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:38:51,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:38:55,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:38:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:38:56,751 INFO L93 Difference]: Finished difference Result 2841 states and 3739 transitions. [2023-12-24 16:38:56,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:38:56,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 164 [2023-12-24 16:38:56,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:38:56,780 INFO L225 Difference]: With dead ends: 2841 [2023-12-24 16:38:56,780 INFO L226 Difference]: Without dead ends: 1699 [2023-12-24 16:38:56,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=81, Invalid=380, Unknown=1, NotChecked=0, Total=462 [2023-12-24 16:38:56,782 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 246 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:38:56,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 733 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2023-12-24 16:38:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-12-24 16:38:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1436. [2023-12-24 16:38:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1206 states have (on average 1.2330016583747927) internal successors, (1487), 1219 states have internal predecessors, (1487), 190 states have call successors, (190), 39 states have call predecessors, (190), 39 states have return successors, (190), 177 states have call predecessors, (190), 190 states have call successors, (190) [2023-12-24 16:38:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1867 transitions. [2023-12-24 16:38:56,853 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1867 transitions. Word has length 164 [2023-12-24 16:38:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:38:56,853 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 1867 transitions. [2023-12-24 16:38:56,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:38:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1867 transitions. [2023-12-24 16:38:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 16:38:56,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:38:56,854 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:38:56,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 16:38:57,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:38:57,068 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:38:57,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:38:57,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1064850517, now seen corresponding path program 1 times [2023-12-24 16:38:57,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:38:57,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856446454] [2023-12-24 16:38:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:38:57,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:38:57,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:38:57,070 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:38:57,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 16:38:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:38:57,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:38:57,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:38:58,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:38:58,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 65 [2023-12-24 16:38:58,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 67 [2023-12-24 16:38:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 41 proven. 456 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-12-24 16:38:58,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:38:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:38:59,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:38:59,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856446454] [2023-12-24 16:38:59,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856446454] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:38:59,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:38:59,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 20 [2023-12-24 16:38:59,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102725274] [2023-12-24 16:38:59,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:38:59,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:38:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:38:59,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:38:59,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:38:59,251 INFO L87 Difference]: Start difference. First operand 1436 states and 1867 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:00,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:00,279 INFO L93 Difference]: Finished difference Result 3277 states and 4275 transitions. [2023-12-24 16:39:00,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:39:00,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 166 [2023-12-24 16:39:00,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:00,285 INFO L225 Difference]: With dead ends: 3277 [2023-12-24 16:39:00,285 INFO L226 Difference]: Without dead ends: 1842 [2023-12-24 16:39:00,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:39:00,288 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 178 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:00,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1250 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:39:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2023-12-24 16:39:00,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1382. [2023-12-24 16:39:00,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1166 states have (on average 1.2332761578044598) internal successors, (1438), 1177 states have internal predecessors, (1438), 178 states have call successors, (178), 37 states have call predecessors, (178), 37 states have return successors, (178), 167 states have call predecessors, (178), 178 states have call successors, (178) [2023-12-24 16:39:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1794 transitions. [2023-12-24 16:39:00,367 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1794 transitions. Word has length 166 [2023-12-24 16:39:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:00,368 INFO L495 AbstractCegarLoop]: Abstraction has 1382 states and 1794 transitions. [2023-12-24 16:39:00,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1794 transitions. [2023-12-24 16:39:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-24 16:39:00,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:00,369 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:39:00,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:00,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:00,580 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:00,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:00,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1514169104, now seen corresponding path program 1 times [2023-12-24 16:39:00,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:00,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838777973] [2023-12-24 16:39:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:00,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:00,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:00,582 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:00,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 16:39:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:01,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:39:01,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:01,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:39:01,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 16:39:01,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 16:39:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:39:01,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:01,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:01,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838777973] [2023-12-24 16:39:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838777973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:01,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:01,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:39:01,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769905135] [2023-12-24 16:39:01,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:01,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:39:01,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:01,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:39:01,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:39:01,196 INFO L87 Difference]: Start difference. First operand 1382 states and 1794 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:02,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:04,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:05,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:05,558 INFO L93 Difference]: Finished difference Result 3334 states and 4344 transitions. [2023-12-24 16:39:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:39:05,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 167 [2023-12-24 16:39:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:05,563 INFO L225 Difference]: With dead ends: 3334 [2023-12-24 16:39:05,563 INFO L226 Difference]: Without dead ends: 1953 [2023-12-24 16:39:05,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:39:05,565 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 185 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:05,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 515 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-24 16:39:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2023-12-24 16:39:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1358. [2023-12-24 16:39:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1142 states have (on average 1.222416812609457) internal successors, (1396), 1153 states have internal predecessors, (1396), 178 states have call successors, (178), 37 states have call predecessors, (178), 37 states have return successors, (178), 167 states have call predecessors, (178), 178 states have call successors, (178) [2023-12-24 16:39:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1752 transitions. [2023-12-24 16:39:05,638 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1752 transitions. Word has length 167 [2023-12-24 16:39:05,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:05,638 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 1752 transitions. [2023-12-24 16:39:05,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1752 transitions. [2023-12-24 16:39:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-24 16:39:05,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:05,639 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:39:05,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:05,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:05,851 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:05,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:05,851 INFO L85 PathProgramCache]: Analyzing trace with hash -527861457, now seen corresponding path program 1 times [2023-12-24 16:39:05,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:05,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778060451] [2023-12-24 16:39:05,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:05,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:05,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:05,853 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:05,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 16:39:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:06,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:39:06,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:06,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:39:06,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 16:39:06,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 16:39:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:39:06,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:06,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778060451] [2023-12-24 16:39:06,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778060451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:06,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:06,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:39:06,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204222159] [2023-12-24 16:39:06,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:06,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:39:06,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:06,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:39:06,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:39:06,649 INFO L87 Difference]: Start difference. First operand 1358 states and 1752 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:09,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:10,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:10,706 INFO L93 Difference]: Finished difference Result 3082 states and 3994 transitions. [2023-12-24 16:39:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:39:10,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 168 [2023-12-24 16:39:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:10,711 INFO L225 Difference]: With dead ends: 3082 [2023-12-24 16:39:10,711 INFO L226 Difference]: Without dead ends: 1725 [2023-12-24 16:39:10,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:39:10,713 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 151 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:10,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 623 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-24 16:39:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2023-12-24 16:39:10,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 825. [2023-12-24 16:39:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 692 states have (on average 1.222543352601156) internal successors, (846), 700 states have internal predecessors, (846), 108 states have call successors, (108), 24 states have call predecessors, (108), 24 states have return successors, (108), 100 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:39:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1062 transitions. [2023-12-24 16:39:10,783 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1062 transitions. Word has length 168 [2023-12-24 16:39:10,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:10,783 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1062 transitions. [2023-12-24 16:39:10,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:10,784 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1062 transitions. [2023-12-24 16:39:10,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-24 16:39:10,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:10,785 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:39:10,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:10,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:10,997 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:10,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:10,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1545220149, now seen corresponding path program 1 times [2023-12-24 16:39:10,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:10,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294884642] [2023-12-24 16:39:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:10,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:10,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:10,999 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:11,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 16:39:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:11,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:39:11,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:11,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:39:11,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 100 [2023-12-24 16:39:11,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 53 [2023-12-24 16:39:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:39:11,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:11,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:11,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294884642] [2023-12-24 16:39:11,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294884642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:11,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:11,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:39:11,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767852177] [2023-12-24 16:39:11,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:11,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:39:11,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:11,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:39:11,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:39:11,975 INFO L87 Difference]: Start difference. First operand 825 states and 1062 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:13,380 INFO L93 Difference]: Finished difference Result 1633 states and 2088 transitions. [2023-12-24 16:39:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:39:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 168 [2023-12-24 16:39:13,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:13,385 INFO L225 Difference]: With dead ends: 1633 [2023-12-24 16:39:13,385 INFO L226 Difference]: Without dead ends: 1631 [2023-12-24 16:39:13,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:39:13,386 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 117 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:13,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 929 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 16:39:13,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2023-12-24 16:39:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1617. [2023-12-24 16:39:13,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1354 states have (on average 1.208271787296898) internal successors, (1636), 1372 states have internal predecessors, (1636), 214 states have call successors, (214), 48 states have call predecessors, (214), 48 states have return successors, (214), 196 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-24 16:39:13,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2064 transitions. [2023-12-24 16:39:13,530 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2064 transitions. Word has length 168 [2023-12-24 16:39:13,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:13,530 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2064 transitions. [2023-12-24 16:39:13,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2064 transitions. [2023-12-24 16:39:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-24 16:39:13,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:13,532 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:39:13,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:13,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:13,745 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:13,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:13,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1545160567, now seen corresponding path program 1 times [2023-12-24 16:39:13,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:13,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656258848] [2023-12-24 16:39:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:13,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:13,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:13,747 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:13,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 16:39:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:14,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:39:14,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:39:14,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:14,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:14,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656258848] [2023-12-24 16:39:14,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656258848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:14,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:14,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:39:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458744526] [2023-12-24 16:39:14,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:14,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:39:14,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:39:14,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:39:14,250 INFO L87 Difference]: Start difference. First operand 1617 states and 2064 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:14,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:14,518 INFO L93 Difference]: Finished difference Result 3313 states and 4227 transitions. [2023-12-24 16:39:14,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:39:14,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 168 [2023-12-24 16:39:14,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:14,534 INFO L225 Difference]: With dead ends: 3313 [2023-12-24 16:39:14,534 INFO L226 Difference]: Without dead ends: 1697 [2023-12-24 16:39:14,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:39:14,537 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 19 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:14,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 572 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:39:14,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2023-12-24 16:39:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1677. [2023-12-24 16:39:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1677 states, 1414 states have (on average 1.1994342291371993) internal successors, (1696), 1432 states have internal predecessors, (1696), 214 states have call successors, (214), 48 states have call predecessors, (214), 48 states have return successors, (214), 196 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-24 16:39:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 2124 transitions. [2023-12-24 16:39:14,692 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 2124 transitions. Word has length 168 [2023-12-24 16:39:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:14,692 INFO L495 AbstractCegarLoop]: Abstraction has 1677 states and 2124 transitions. [2023-12-24 16:39:14,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 2124 transitions. [2023-12-24 16:39:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-24 16:39:14,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:14,694 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:39:14,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:14,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:14,907 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:14,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1883510190, now seen corresponding path program 1 times [2023-12-24 16:39:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:14,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453839445] [2023-12-24 16:39:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:14,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:14,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:14,910 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:14,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 16:39:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:15,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:39:15,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:16,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:39:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 3 proven. 281 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-24 16:39:16,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:16,533 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:39:16,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2023-12-24 16:39:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 51 proven. 9 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-12-24 16:39:16,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:16,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453839445] [2023-12-24 16:39:16,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453839445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:39:16,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:39:16,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-24 16:39:16,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727478349] [2023-12-24 16:39:16,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:39:16,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:39:16,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:16,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:39:16,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:39:16,945 INFO L87 Difference]: Start difference. First operand 1677 states and 2124 transitions. Second operand has 11 states, 9 states have (on average 8.777777777777779) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:39:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:17,927 INFO L93 Difference]: Finished difference Result 2750 states and 3466 transitions. [2023-12-24 16:39:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:39:17,928 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.777777777777779) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) Word has length 168 [2023-12-24 16:39:17,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:17,932 INFO L225 Difference]: With dead ends: 2750 [2023-12-24 16:39:17,932 INFO L226 Difference]: Without dead ends: 1757 [2023-12-24 16:39:17,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:39:17,934 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 365 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:17,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 542 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:39:17,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2023-12-24 16:39:18,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1693. [2023-12-24 16:39:18,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1426 states have (on average 1.1907433380084151) internal successors, (1698), 1444 states have internal predecessors, (1698), 214 states have call successors, (214), 52 states have call predecessors, (214), 52 states have return successors, (214), 196 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-24 16:39:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2126 transitions. [2023-12-24 16:39:18,057 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2126 transitions. Word has length 168 [2023-12-24 16:39:18,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:18,058 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2126 transitions. [2023-12-24 16:39:18,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.777777777777779) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:39:18,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2126 transitions. [2023-12-24 16:39:18,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-24 16:39:18,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:18,059 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:39:18,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:18,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:18,271 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:18,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2102364908, now seen corresponding path program 1 times [2023-12-24 16:39:18,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:18,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881533610] [2023-12-24 16:39:18,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:18,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:18,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:18,273 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:18,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 16:39:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:18,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:39:18,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:20,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:39:20,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:39:20,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:39:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 1 proven. 155 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:39:20,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:20,854 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:39:20,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2023-12-24 16:39:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-12-24 16:39:21,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:21,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881533610] [2023-12-24 16:39:21,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881533610] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:39:21,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:39:21,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2023-12-24 16:39:21,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595333114] [2023-12-24 16:39:21,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:39:21,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 16:39:21,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:21,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 16:39:21,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:39:21,202 INFO L87 Difference]: Start difference. First operand 1693 states and 2126 transitions. Second operand has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:39:24,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:24,381 INFO L93 Difference]: Finished difference Result 2768 states and 3455 transitions. [2023-12-24 16:39:24,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-24 16:39:24,382 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) Word has length 168 [2023-12-24 16:39:24,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:24,386 INFO L225 Difference]: With dead ends: 2768 [2023-12-24 16:39:24,386 INFO L226 Difference]: Without dead ends: 1767 [2023-12-24 16:39:24,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 322 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=309, Invalid=1173, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 16:39:24,388 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 595 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:24,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1548 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 16:39:24,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2023-12-24 16:39:24,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1585. [2023-12-24 16:39:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1332 states have (on average 1.1861861861861862) internal successors, (1580), 1350 states have internal predecessors, (1580), 202 states have call successors, (202), 50 states have call predecessors, (202), 50 states have return successors, (202), 184 states have call predecessors, (202), 202 states have call successors, (202) [2023-12-24 16:39:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 1984 transitions. [2023-12-24 16:39:24,532 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 1984 transitions. Word has length 168 [2023-12-24 16:39:24,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:24,532 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 1984 transitions. [2023-12-24 16:39:24,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:39:24,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 1984 transitions. [2023-12-24 16:39:24,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-24 16:39:24,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:24,534 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:39:24,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:24,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:24,746 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:24,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:24,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2054693239, now seen corresponding path program 1 times [2023-12-24 16:39:24,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:24,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873136038] [2023-12-24 16:39:24,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:24,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:24,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:24,748 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:24,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 16:39:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:25,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:39:25,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:25,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 16:39:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 16:39:25,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:25,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:25,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873136038] [2023-12-24 16:39:25,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873136038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:25,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:25,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:39:25,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066111486] [2023-12-24 16:39:25,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:25,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:39:25,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:25,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:39:25,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:39:25,561 INFO L87 Difference]: Start difference. First operand 1585 states and 1984 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:27,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:39:30,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 16:39:34,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:39:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:36,154 INFO L93 Difference]: Finished difference Result 3427 states and 4296 transitions. [2023-12-24 16:39:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:39:36,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 168 [2023-12-24 16:39:36,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:36,172 INFO L225 Difference]: With dead ends: 3427 [2023-12-24 16:39:36,172 INFO L226 Difference]: Without dead ends: 1843 [2023-12-24 16:39:36,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:39:36,175 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 150 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:36,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 604 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-24 16:39:36,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-24 16:39:36,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1655. [2023-12-24 16:39:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1380 states have (on average 1.1768115942028985) internal successors, (1624), 1398 states have internal predecessors, (1624), 216 states have call successors, (216), 58 states have call predecessors, (216), 58 states have return successors, (216), 198 states have call predecessors, (216), 216 states have call successors, (216) [2023-12-24 16:39:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2056 transitions. [2023-12-24 16:39:36,343 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2056 transitions. Word has length 168 [2023-12-24 16:39:36,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:36,344 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2056 transitions. [2023-12-24 16:39:36,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 16:39:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2056 transitions. [2023-12-24 16:39:36,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-24 16:39:36,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:36,346 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:39:36,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-24 16:39:36,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:36,556 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:36,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:36,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1374634869, now seen corresponding path program 1 times [2023-12-24 16:39:36,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:36,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439322801] [2023-12-24 16:39:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:36,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:36,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:36,558 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:36,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 16:39:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:37,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:39:37,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:38,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:39:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:39:39,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:39,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:39,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439322801] [2023-12-24 16:39:39,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439322801] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:39:39,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1137117736] [2023-12-24 16:39:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:39,443 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:39:39,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:39:39,473 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:39:39,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-24 16:39:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:41,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:39:41,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:43,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:39:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:39:44,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:44,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1137117736] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:39:44,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:39:44,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-24 16:39:44,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570240599] [2023-12-24 16:39:44,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:39:44,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 16:39:44,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:44,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 16:39:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:39:44,519 INFO L87 Difference]: Start difference. First operand 1655 states and 2056 transitions. Second operand has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 13 states have internal predecessors, (111), 4 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:39:52,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:52,944 INFO L93 Difference]: Finished difference Result 4191 states and 5213 transitions. [2023-12-24 16:39:52,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:39:52,945 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 13 states have internal predecessors, (111), 4 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) Word has length 168 [2023-12-24 16:39:52,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:52,949 INFO L225 Difference]: With dead ends: 4191 [2023-12-24 16:39:52,949 INFO L226 Difference]: Without dead ends: 2537 [2023-12-24 16:39:52,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 382 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:39:52,951 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 288 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:52,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 925 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-24 16:39:52,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2023-12-24 16:39:53,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 1709. [2023-12-24 16:39:53,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1430 states have (on average 1.1804195804195805) internal successors, (1688), 1448 states have internal predecessors, (1688), 218 states have call successors, (218), 60 states have call predecessors, (218), 60 states have return successors, (218), 200 states have call predecessors, (218), 218 states have call successors, (218) [2023-12-24 16:39:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2124 transitions. [2023-12-24 16:39:53,123 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2124 transitions. Word has length 168 [2023-12-24 16:39:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:53,123 INFO L495 AbstractCegarLoop]: Abstraction has 1709 states and 2124 transitions. [2023-12-24 16:39:53,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 13 states have internal predecessors, (111), 4 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:39:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2124 transitions. [2023-12-24 16:39:53,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-24 16:39:53,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:53,125 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:39:53,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:53,350 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 (28)] Ended with exit code 0 [2023-12-24 16:39:53,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:53,537 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:53,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:53,538 INFO L85 PathProgramCache]: Analyzing trace with hash -950988147, now seen corresponding path program 1 times [2023-12-24 16:39:53,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:53,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547771099] [2023-12-24 16:39:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:53,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:53,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:53,539 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:53,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 16:39:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:54,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:39:54,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:39:54,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:39:54,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:54,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547771099] [2023-12-24 16:39:54,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547771099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:39:54,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:39:54,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:39:54,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965624998] [2023-12-24 16:39:54,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:39:54,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:39:54,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:54,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:39:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:39:54,046 INFO L87 Difference]: Start difference. First operand 1709 states and 2124 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 16:39:54,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:39:54,283 INFO L93 Difference]: Finished difference Result 3431 states and 4269 transitions. [2023-12-24 16:39:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:39:54,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 168 [2023-12-24 16:39:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:39:54,287 INFO L225 Difference]: With dead ends: 3431 [2023-12-24 16:39:54,287 INFO L226 Difference]: Without dead ends: 1723 [2023-12-24 16:39:54,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:39:54,290 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 7 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:39:54,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 445 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:39:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2023-12-24 16:39:54,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1709. [2023-12-24 16:39:54,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1430 states have (on average 1.1776223776223775) internal successors, (1684), 1448 states have internal predecessors, (1684), 218 states have call successors, (218), 60 states have call predecessors, (218), 60 states have return successors, (218), 200 states have call predecessors, (218), 218 states have call successors, (218) [2023-12-24 16:39:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2120 transitions. [2023-12-24 16:39:54,460 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2120 transitions. Word has length 168 [2023-12-24 16:39:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:39:54,460 INFO L495 AbstractCegarLoop]: Abstraction has 1709 states and 2120 transitions. [2023-12-24 16:39:54,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 16:39:54,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2120 transitions. [2023-12-24 16:39:54,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-24 16:39:54,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:39:54,462 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:39:54,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 16:39:54,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:54,675 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:39:54,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:39:54,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1273630929, now seen corresponding path program 1 times [2023-12-24 16:39:54,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:39:54,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090927053] [2023-12-24 16:39:54,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:54,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:39:54,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:39:54,683 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:39:54,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 16:39:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:55,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:39:55,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:39:57,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:39:57,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 89 [2023-12-24 16:39:57,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 75 [2023-12-24 16:39:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:39:57,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:57,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:39:57,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090927053] [2023-12-24 16:39:57,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090927053] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:39:57,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [56161295] [2023-12-24 16:39:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:39:57,996 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:39:57,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:39:57,997 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:39:57,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-24 16:39:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:39:59,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 16:39:59,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:03,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2023-12-24 16:40:05,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:40:06,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 89 [2023-12-24 16:40:06,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 75 [2023-12-24 16:40:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 16:40:06,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:06,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [56161295] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:40:06,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:06,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2023-12-24 16:40:06,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264408205] [2023-12-24 16:40:06,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:06,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 16:40:06,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:06,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 16:40:06,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:40:06,533 INFO L87 Difference]: Start difference. First operand 1709 states and 2120 transitions. Second operand has 23 states, 21 states have (on average 6.619047619047619) internal successors, (139), 20 states have internal predecessors, (139), 4 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:40:10,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:40:16,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:40:17,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:40:20,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:20,435 INFO L93 Difference]: Finished difference Result 3547 states and 4370 transitions. [2023-12-24 16:40:20,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 16:40:20,436 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.619047619047619) internal successors, (139), 20 states have internal predecessors, (139), 4 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) Word has length 170 [2023-12-24 16:40:20,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:20,441 INFO L225 Difference]: With dead ends: 3547 [2023-12-24 16:40:20,441 INFO L226 Difference]: Without dead ends: 3545 [2023-12-24 16:40:20,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 379 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=380, Invalid=1426, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 16:40:20,442 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 425 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:20,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1631 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2023-12-24 16:40:20,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3545 states. [2023-12-24 16:40:20,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3545 to 2554. [2023-12-24 16:40:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 2138 states have (on average 1.176333021515435) internal successors, (2515), 2167 states have internal predecessors, (2515), 328 states have call successors, (328), 87 states have call predecessors, (328), 87 states have return successors, (328), 299 states have call predecessors, (328), 328 states have call successors, (328) [2023-12-24 16:40:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 3171 transitions. [2023-12-24 16:40:20,719 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 3171 transitions. Word has length 170 [2023-12-24 16:40:20,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:20,720 INFO L495 AbstractCegarLoop]: Abstraction has 2554 states and 3171 transitions. [2023-12-24 16:40:20,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.619047619047619) internal successors, (139), 20 states have internal predecessors, (139), 4 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:40:20,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 3171 transitions. [2023-12-24 16:40:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-24 16:40:20,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:20,722 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:40:20,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 16:40:20,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2023-12-24 16:40:21,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:40:21,136 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:21,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash -98176369, now seen corresponding path program 1 times [2023-12-24 16:40:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:21,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958961359] [2023-12-24 16:40:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:21,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:21,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:21,139 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:40:21,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 16:40:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:21,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:40:21,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-12-24 16:40:21,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:21,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958961359] [2023-12-24 16:40:21,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958961359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:21,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:21,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:40:21,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922740254] [2023-12-24 16:40:21,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:21,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:40:21,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:40:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:40:21,772 INFO L87 Difference]: Start difference. First operand 2554 states and 3171 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 16:40:22,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:22,448 INFO L93 Difference]: Finished difference Result 4376 states and 5402 transitions. [2023-12-24 16:40:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:40:22,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 170 [2023-12-24 16:40:22,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:22,452 INFO L225 Difference]: With dead ends: 4376 [2023-12-24 16:40:22,452 INFO L226 Difference]: Without dead ends: 1844 [2023-12-24 16:40:22,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:40:22,455 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 7 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:22,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 579 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:40:22,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2023-12-24 16:40:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1232. [2023-12-24 16:40:22,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1072 states have (on average 1.171641791044776) internal successors, (1256), 1081 states have internal predecessors, (1256), 124 states have call successors, (124), 35 states have call predecessors, (124), 35 states have return successors, (124), 115 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 16:40:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1504 transitions. [2023-12-24 16:40:22,573 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1504 transitions. Word has length 170 [2023-12-24 16:40:22,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:22,574 INFO L495 AbstractCegarLoop]: Abstraction has 1232 states and 1504 transitions. [2023-12-24 16:40:22,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 16:40:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1504 transitions. [2023-12-24 16:40:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-24 16:40:22,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:22,575 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:40:22,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-24 16:40:22,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:22,788 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:22,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:22,789 INFO L85 PathProgramCache]: Analyzing trace with hash 551503521, now seen corresponding path program 1 times [2023-12-24 16:40:22,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:22,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744918647] [2023-12-24 16:40:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:22,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:22,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:22,799 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:40:22,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 16:40:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:23,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:40:23,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:24,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:40:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 5 proven. 375 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2023-12-24 16:40:24,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:24,841 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:40:24,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2023-12-24 16:40:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-12-24 16:40:25,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:25,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744918647] [2023-12-24 16:40:25,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744918647] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:40:25,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:25,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-12-24 16:40:25,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111816330] [2023-12-24 16:40:25,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:25,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:40:25,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:25,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:40:25,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:40:25,222 INFO L87 Difference]: Start difference. First operand 1232 states and 1504 transitions. Second operand has 12 states, 10 states have (on average 8.3) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:40:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:26,836 INFO L93 Difference]: Finished difference Result 2466 states and 2997 transitions. [2023-12-24 16:40:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:40:26,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.3) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) Word has length 172 [2023-12-24 16:40:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:26,838 INFO L225 Difference]: With dead ends: 2466 [2023-12-24 16:40:26,838 INFO L226 Difference]: Without dead ends: 1280 [2023-12-24 16:40:26,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:40:26,840 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 242 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:26,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 645 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 16:40:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2023-12-24 16:40:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1232. [2023-12-24 16:40:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1072 states have (on average 1.162313432835821) internal successors, (1246), 1081 states have internal predecessors, (1246), 124 states have call successors, (124), 35 states have call predecessors, (124), 35 states have return successors, (124), 115 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 16:40:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1494 transitions. [2023-12-24 16:40:26,958 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1494 transitions. Word has length 172 [2023-12-24 16:40:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:26,958 INFO L495 AbstractCegarLoop]: Abstraction has 1232 states and 1494 transitions. [2023-12-24 16:40:26,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.3) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:40:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1494 transitions. [2023-12-24 16:40:26,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-24 16:40:26,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:26,960 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:40:26,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 16:40:27,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:27,168 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:27,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1419695173, now seen corresponding path program 1 times [2023-12-24 16:40:27,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:27,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390375046] [2023-12-24 16:40:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:27,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:27,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:27,170 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:40:27,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 16:40:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:27,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:40:27,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:28,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:40:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 3 proven. 281 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-24 16:40:28,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:40:29,033 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:40:29,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2023-12-24 16:40:29,350 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 51 proven. 9 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-12-24 16:40:29,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:29,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390375046] [2023-12-24 16:40:29,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390375046] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:40:29,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:40:29,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-24 16:40:29,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834482820] [2023-12-24 16:40:29,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:40:29,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:40:29,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:29,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:40:29,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:40:29,352 INFO L87 Difference]: Start difference. First operand 1232 states and 1494 transitions. Second operand has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:40:30,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:30,127 INFO L93 Difference]: Finished difference Result 2456 states and 2967 transitions. [2023-12-24 16:40:30,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:40:30,128 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) Word has length 174 [2023-12-24 16:40:30,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:30,130 INFO L225 Difference]: With dead ends: 2456 [2023-12-24 16:40:30,130 INFO L226 Difference]: Without dead ends: 1270 [2023-12-24 16:40:30,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 337 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:40:30,132 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 224 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:30,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 524 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:40:30,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2023-12-24 16:40:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1232. [2023-12-24 16:40:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1072 states have (on average 1.1529850746268657) internal successors, (1236), 1081 states have internal predecessors, (1236), 124 states have call successors, (124), 35 states have call predecessors, (124), 35 states have return successors, (124), 115 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 16:40:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1484 transitions. [2023-12-24 16:40:30,248 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1484 transitions. Word has length 174 [2023-12-24 16:40:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:30,249 INFO L495 AbstractCegarLoop]: Abstraction has 1232 states and 1484 transitions. [2023-12-24 16:40:30,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 4 states have call successors, (42) [2023-12-24 16:40:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1484 transitions. [2023-12-24 16:40:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-24 16:40:30,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:30,250 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:40:30,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 16:40:30,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:30,463 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:30,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:30,464 INFO L85 PathProgramCache]: Analyzing trace with hash -739636803, now seen corresponding path program 1 times [2023-12-24 16:40:30,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:30,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977803192] [2023-12-24 16:40:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:30,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:40:30,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:30,466 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:40:30,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 16:40:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:31,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 16:40:31,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:36,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:40:36,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 54 [2023-12-24 16:40:36,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 52 [2023-12-24 16:40:36,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:40:36,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 35 [2023-12-24 16:40:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 6 proven. 462 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-24 16:40:44,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:43:40,964 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-24 16:43:40,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:43:40,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977803192] [2023-12-24 16:43:40,965 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-24 16:43:40,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2023-12-24 16:43:40,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-24 16:43:41,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:43:41,166 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2023-12-24 16:43:41,170 INFO L158 Benchmark]: Toolchain (without parser) took 492725.06ms. Allocated memory was 165.7MB in the beginning and 370.1MB in the end (delta: 204.5MB). Free memory was 120.3MB in the beginning and 155.2MB in the end (delta: -34.8MB). Peak memory consumption was 170.1MB. Max. memory is 8.0GB. [2023-12-24 16:43:41,170 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 16:43:41,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.89ms. Allocated memory is still 165.7MB. Free memory was 120.3MB in the beginning and 105.0MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-24 16:43:41,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.56ms. Allocated memory is still 165.7MB. Free memory was 105.0MB in the beginning and 101.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 16:43:41,170 INFO L158 Benchmark]: Boogie Preprocessor took 95.28ms. Allocated memory is still 165.7MB. Free memory was 101.4MB in the beginning and 93.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-24 16:43:41,170 INFO L158 Benchmark]: RCFGBuilder took 4419.20ms. Allocated memory is still 165.7MB. Free memory was 93.0MB in the beginning and 93.3MB in the end (delta: -267.3kB). Peak memory consumption was 17.4MB. Max. memory is 8.0GB. [2023-12-24 16:43:41,171 INFO L158 Benchmark]: TraceAbstraction took 487898.07ms. Allocated memory was 165.7MB in the beginning and 370.1MB in the end (delta: 204.5MB). Free memory was 92.7MB in the beginning and 155.2MB in the end (delta: -62.4MB). Peak memory consumption was 142.2MB. Max. memory is 8.0GB. [2023-12-24 16:43:41,171 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 269.89ms. Allocated memory is still 165.7MB. Free memory was 120.3MB in the beginning and 105.0MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.56ms. Allocated memory is still 165.7MB. Free memory was 105.0MB in the beginning and 101.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 95.28ms. Allocated memory is still 165.7MB. Free memory was 101.4MB in the beginning and 93.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 4419.20ms. Allocated memory is still 165.7MB. Free memory was 93.0MB in the beginning and 93.3MB in the end (delta: -267.3kB). Peak memory consumption was 17.4MB. Max. memory is 8.0GB. * TraceAbstraction took 487898.07ms. Allocated memory was 165.7MB in the beginning and 370.1MB in the end (delta: 204.5MB). Free memory was 92.7MB in the beginning and 155.2MB in the end (delta: -62.4MB). Peak memory consumption was 142.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...