/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-70.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 13:50:55,878 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 13:50:55,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 13:50:55,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 13:50:55,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 13:50:55,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 13:50:55,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 13:50:55,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 13:50:55,986 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 13:50:55,989 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 13:50:55,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 13:50:55,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 13:50:55,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 13:50:55,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 13:50:55,991 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 13:50:55,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 13:50:55,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 13:50:55,992 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 13:50:55,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 13:50:55,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 13:50:55,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 13:50:55,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 13:50:55,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 13:50:55,994 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 13:50:55,994 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 13:50:55,995 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 13:50:55,995 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 13:50:55,995 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 13:50:55,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 13:50:55,995 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 13:50:55,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 13:50:55,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 13:50:55,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 13:50:55,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 13:50:55,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 13:50:55,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 13:50:55,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 13:50:55,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 13:50:55,997 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 13:50:55,998 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 13:50:55,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 13:50:55,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 13:50:55,998 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 13:50:55,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 13:50:55,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 13:50:55,999 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 13:50:55,999 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 13:50:56,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 13:50:56,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 13:50:56,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 13:50:56,217 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 13:50:56,218 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 13:50:56,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-70.i [2023-12-24 13:50:57,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 13:50:57,515 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 13:50:57,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-70.i [2023-12-24 13:50:57,526 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f473cbb/4c6a85d84516420e863dc49fc239cc5e/FLAG5a9f65593 [2023-12-24 13:50:57,538 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f473cbb/4c6a85d84516420e863dc49fc239cc5e [2023-12-24 13:50:57,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 13:50:57,541 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 13:50:57,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 13:50:57,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 13:50:57,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 13:50:57,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6211abc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57, skipping insertion in model container [2023-12-24 13:50:57,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,578 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 13:50:57,674 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-70.i[916,929] [2023-12-24 13:50:57,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 13:50:57,724 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 13:50:57,732 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-70.i[916,929] [2023-12-24 13:50:57,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 13:50:57,790 INFO L206 MainTranslator]: Completed translation [2023-12-24 13:50:57,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57 WrapperNode [2023-12-24 13:50:57,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 13:50:57,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 13:50:57,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 13:50:57,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 13:50:57,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,850 INFO L138 Inliner]: procedures = 36, calls = 161, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 495 [2023-12-24 13:50:57,850 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 13:50:57,851 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 13:50:57,851 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 13:50:57,851 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 13:50:57,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,872 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,925 INFO L175 MemorySlicer]: Split 132 memory accesses to 7 slices as follows [2, 8, 39, 12, 5, 41, 25]. 31 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 1, 5, 3, 1, 2, 2]. The 16 writes are split as follows [0, 1, 6, 3, 2, 2, 2]. [2023-12-24 13:50:57,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,944 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 13:50:57,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 13:50:57,973 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 13:50:57,973 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 13:50:57,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (1/1) ... [2023-12-24 13:50:57,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 13:50:58,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 13:50:58,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 13:50:58,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 13:50:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 13:50:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 13:50:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 13:50:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 13:50:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 13:50:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 13:50:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 13:50:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 13:50:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 13:50:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 13:50:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 13:50:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 13:50:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 13:50:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 13:50:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 13:50:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 13:50:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 13:50:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 13:50:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 13:50:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 13:50:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 13:50:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 13:50:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 13:50:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 13:50:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 13:50:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 13:50:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 13:50:58,051 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 13:50:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 13:50:58,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 13:50:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 13:50:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 13:50:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 13:50:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 13:50:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 13:50:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 13:50:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 13:50:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 13:50:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 13:50:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 13:50:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 13:50:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 13:50:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 13:50:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 13:50:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 13:50:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 13:50:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 13:50:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 13:50:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 13:50:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 13:50:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 13:50:58,189 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 13:50:58,190 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 13:51:00,568 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 13:51:00,616 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 13:51:00,617 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 13:51:00,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:51:00 BoogieIcfgContainer [2023-12-24 13:51:00,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 13:51:00,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 13:51:00,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 13:51:00,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 13:51:00,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 01:50:57" (1/3) ... [2023-12-24 13:51:00,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c326c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:51:00, skipping insertion in model container [2023-12-24 13:51:00,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:50:57" (2/3) ... [2023-12-24 13:51:00,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c326c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:51:00, skipping insertion in model container [2023-12-24 13:51:00,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:51:00" (3/3) ... [2023-12-24 13:51:00,624 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-70.i [2023-12-24 13:51:00,636 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 13:51:00,636 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 13:51:00,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 13:51:00,680 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;@479ad8e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 13:51:00,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 13:51:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 79 states have (on average 1.481012658227848) internal successors, (117), 80 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 13:51:00,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:00,700 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:00,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:00,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:00,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1419484856, now seen corresponding path program 1 times [2023-12-24 13:51:00,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:00,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108090577] [2023-12-24 13:51:00,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:00,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:00,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:00,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:00,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 13:51:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:01,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 13:51:01,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-12-24 13:51:01,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:01,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:01,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108090577] [2023-12-24 13:51:01,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108090577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:01,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:01,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 13:51:01,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845286693] [2023-12-24 13:51:01,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:01,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 13:51:01,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:01,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 13:51:01,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 13:51:01,077 INFO L87 Difference]: Start difference. First operand has 94 states, 79 states have (on average 1.481012658227848) internal successors, (117), 80 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:01,118 INFO L93 Difference]: Finished difference Result 185 states and 292 transitions. [2023-12-24 13:51:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 13:51:01,120 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2023-12-24 13:51:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:01,125 INFO L225 Difference]: With dead ends: 185 [2023-12-24 13:51:01,125 INFO L226 Difference]: Without dead ends: 92 [2023-12-24 13:51:01,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 13:51:01,129 INFO L413 NwaCegarLoop]: 132 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, 132 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:01,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:51:01,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-24 13:51:01,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-12-24 13:51:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 78 states have (on average 1.435897435897436) internal successors, (112), 78 states have internal predecessors, (112), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 136 transitions. [2023-12-24 13:51:01,157 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 136 transitions. Word has length 110 [2023-12-24 13:51:01,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:01,157 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 136 transitions. [2023-12-24 13:51:01,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 136 transitions. [2023-12-24 13:51:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 13:51:01,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:01,160 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:01,171 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 13:51:01,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:01,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:01,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:01,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1585516216, now seen corresponding path program 1 times [2023-12-24 13:51:01,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:01,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608034179] [2023-12-24 13:51:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:01,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:01,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:01,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:01,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 13:51:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:01,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 13:51:01,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 13:51:01,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:01,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608034179] [2023-12-24 13:51:01,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608034179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:01,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:01,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 13:51:01,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930276865] [2023-12-24 13:51:01,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:01,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 13:51:01,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 13:51:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 13:51:01,743 INFO L87 Difference]: Start difference. First operand 92 states and 136 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:01,877 INFO L93 Difference]: Finished difference Result 189 states and 280 transitions. [2023-12-24 13:51:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:51:01,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2023-12-24 13:51:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:01,879 INFO L225 Difference]: With dead ends: 189 [2023-12-24 13:51:01,879 INFO L226 Difference]: Without dead ends: 98 [2023-12-24 13:51:01,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:51:01,881 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 10 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:01,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 385 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:51:01,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-24 13:51:01,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2023-12-24 13:51:01,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 80 states have (on average 1.425) internal successors, (114), 80 states have internal predecessors, (114), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 138 transitions. [2023-12-24 13:51:01,890 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 138 transitions. Word has length 110 [2023-12-24 13:51:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:01,890 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 138 transitions. [2023-12-24 13:51:01,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 138 transitions. [2023-12-24 13:51:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 13:51:01,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:01,892 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:01,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:02,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:02,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:02,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:02,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1652719878, now seen corresponding path program 1 times [2023-12-24 13:51:02,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:02,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326570136] [2023-12-24 13:51:02,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:02,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:02,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:02,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:02,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 13:51:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:02,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 13:51:02,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-24 13:51:03,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:51:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:51:03,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:03,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326570136] [2023-12-24 13:51:03,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326570136] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:51:03,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:51:03,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 13:51:03,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861340862] [2023-12-24 13:51:03,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:03,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:51:03,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:03,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:51:03,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:51:03,122 INFO L87 Difference]: Start difference. First operand 94 states and 138 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:03,253 INFO L93 Difference]: Finished difference Result 228 states and 336 transitions. [2023-12-24 13:51:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:51:03,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110 [2023-12-24 13:51:03,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:03,255 INFO L225 Difference]: With dead ends: 228 [2023-12-24 13:51:03,255 INFO L226 Difference]: Without dead ends: 135 [2023-12-24 13:51:03,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:51:03,256 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 113 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:03,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 374 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:51:03,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-24 13:51:03,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 97. [2023-12-24 13:51:03,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 83 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 141 transitions. [2023-12-24 13:51:03,262 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 141 transitions. Word has length 110 [2023-12-24 13:51:03,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:03,263 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 141 transitions. [2023-12-24 13:51:03,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:03,263 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 141 transitions. [2023-12-24 13:51:03,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 13:51:03,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:03,264 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:03,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:03,473 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 13:51:03,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:03,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:03,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1011163334, now seen corresponding path program 1 times [2023-12-24 13:51:03,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:03,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095290901] [2023-12-24 13:51:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:03,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:03,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:03,493 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 13:51:03,540 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 13:51:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:03,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 13:51:03,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:51:03,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:03,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095290901] [2023-12-24 13:51:03,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095290901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:03,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 13:51:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400044658] [2023-12-24 13:51:03,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:03,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 13:51:03,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 13:51:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 13:51:03,887 INFO L87 Difference]: Start difference. First operand 97 states and 141 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:04,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:04,006 INFO L93 Difference]: Finished difference Result 214 states and 313 transitions. [2023-12-24 13:51:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:51:04,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110 [2023-12-24 13:51:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:04,009 INFO L225 Difference]: With dead ends: 214 [2023-12-24 13:51:04,009 INFO L226 Difference]: Without dead ends: 118 [2023-12-24 13:51:04,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 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 13:51:04,010 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 39 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:04,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 425 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:51:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-24 13:51:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 99. [2023-12-24 13:51:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 85 states have (on average 1.4) internal successors, (119), 85 states have internal predecessors, (119), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2023-12-24 13:51:04,015 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 110 [2023-12-24 13:51:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:04,016 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2023-12-24 13:51:04,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2023-12-24 13:51:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 13:51:04,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:04,017 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:04,032 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 13:51:04,227 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 13:51:04,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:04,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1945810879, now seen corresponding path program 1 times [2023-12-24 13:51:04,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:04,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606951079] [2023-12-24 13:51:04,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:04,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:04,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:04,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:04,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 13:51:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:04,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:51:04,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-24 13:51:05,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:51:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:51:05,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:05,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606951079] [2023-12-24 13:51:05,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606951079] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:51:05,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:51:05,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 13:51:05,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717991753] [2023-12-24 13:51:05,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:05,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:51:05,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:05,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:51:05,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:51:05,298 INFO L87 Difference]: Start difference. First operand 99 states and 143 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:05,417 INFO L93 Difference]: Finished difference Result 252 states and 365 transitions. [2023-12-24 13:51:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:51:05,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 112 [2023-12-24 13:51:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:05,418 INFO L225 Difference]: With dead ends: 252 [2023-12-24 13:51:05,418 INFO L226 Difference]: Without dead ends: 154 [2023-12-24 13:51:05,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:51:05,420 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 104 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:05,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 550 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:51:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-24 13:51:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 109. [2023-12-24 13:51:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 95 states have (on average 1.4) internal successors, (133), 95 states have internal predecessors, (133), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 157 transitions. [2023-12-24 13:51:05,426 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 157 transitions. Word has length 112 [2023-12-24 13:51:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:05,426 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 157 transitions. [2023-12-24 13:51:05,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:05,426 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 157 transitions. [2023-12-24 13:51:05,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 13:51:05,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:05,428 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:05,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:05,635 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 13:51:05,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:05,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:05,636 INFO L85 PathProgramCache]: Analyzing trace with hash 479662612, now seen corresponding path program 1 times [2023-12-24 13:51:05,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:05,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951718517] [2023-12-24 13:51:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:05,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:05,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:05,638 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 13:51:05,642 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 13:51:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:05,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 13:51:05,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-24 13:51:06,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:51:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:51:06,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:06,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951718517] [2023-12-24 13:51:06,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951718517] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:51:06,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:51:06,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 13:51:06,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104628651] [2023-12-24 13:51:06,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:06,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:51:06,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:06,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:51:06,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:51:06,608 INFO L87 Difference]: Start difference. First operand 109 states and 157 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:06,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:06,733 INFO L93 Difference]: Finished difference Result 261 states and 376 transitions. [2023-12-24 13:51:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:51:06,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 13:51:06,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:06,735 INFO L225 Difference]: With dead ends: 261 [2023-12-24 13:51:06,735 INFO L226 Difference]: Without dead ends: 153 [2023-12-24 13:51:06,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:51:06,736 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 88 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:06,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 548 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:51:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-12-24 13:51:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 113. [2023-12-24 13:51:06,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 99 states have (on average 1.3838383838383839) internal successors, (137), 99 states have internal predecessors, (137), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 161 transitions. [2023-12-24 13:51:06,745 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 161 transitions. Word has length 113 [2023-12-24 13:51:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:06,746 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 161 transitions. [2023-12-24 13:51:06,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:06,746 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 161 transitions. [2023-12-24 13:51:06,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 13:51:06,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:06,747 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:06,760 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 13:51:06,961 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 13:51:06,961 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:06,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:06,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1118260652, now seen corresponding path program 1 times [2023-12-24 13:51:06,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:06,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718050225] [2023-12-24 13:51:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:06,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:06,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:06,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:06,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 13:51:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:07,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 13:51:07,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:51:07,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:07,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:07,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718050225] [2023-12-24 13:51:07,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718050225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:07,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:07,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:51:07,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801295457] [2023-12-24 13:51:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:07,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:51:07,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:07,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:51:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:51:07,321 INFO L87 Difference]: Start difference. First operand 113 states and 161 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:07,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:07,465 INFO L93 Difference]: Finished difference Result 242 states and 346 transitions. [2023-12-24 13:51:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:51:07,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 13:51:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:07,467 INFO L225 Difference]: With dead ends: 242 [2023-12-24 13:51:07,467 INFO L226 Difference]: Without dead ends: 130 [2023-12-24 13:51:07,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:51:07,468 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 64 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:07,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 520 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:51:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-24 13:51:07,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 116. [2023-12-24 13:51:07,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 102 states have (on average 1.3725490196078431) internal successors, (140), 102 states have internal predecessors, (140), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:07,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 164 transitions. [2023-12-24 13:51:07,474 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 164 transitions. Word has length 113 [2023-12-24 13:51:07,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:07,474 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 164 transitions. [2023-12-24 13:51:07,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:07,475 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 164 transitions. [2023-12-24 13:51:07,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 13:51:07,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:07,476 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:07,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:07,676 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 13:51:07,677 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:07,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:07,677 INFO L85 PathProgramCache]: Analyzing trace with hash -969178492, now seen corresponding path program 1 times [2023-12-24 13:51:07,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:07,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445552463] [2023-12-24 13:51:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:07,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:07,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:07,680 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 13:51:07,681 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 13:51:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:08,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 13:51:08,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:51:08,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:08,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:08,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445552463] [2023-12-24 13:51:08,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445552463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:08,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:08,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:51:08,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790790862] [2023-12-24 13:51:08,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:08,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:51:08,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:08,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:51:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:51:08,095 INFO L87 Difference]: Start difference. First operand 116 states and 164 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:08,387 INFO L93 Difference]: Finished difference Result 255 states and 361 transitions. [2023-12-24 13:51:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 13:51:08,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2023-12-24 13:51:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:08,389 INFO L225 Difference]: With dead ends: 255 [2023-12-24 13:51:08,389 INFO L226 Difference]: Without dead ends: 140 [2023-12-24 13:51:08,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:51:08,390 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 53 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:08,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 621 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:51:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-24 13:51:08,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 122. [2023-12-24 13:51:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 108 states have (on average 1.3518518518518519) internal successors, (146), 108 states have internal predecessors, (146), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:08,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 170 transitions. [2023-12-24 13:51:08,398 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 170 transitions. Word has length 114 [2023-12-24 13:51:08,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:08,399 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 170 transitions. [2023-12-24 13:51:08,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 170 transitions. [2023-12-24 13:51:08,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 13:51:08,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:08,399 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:08,410 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 13:51:08,600 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 13:51:08,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:08,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash -911920190, now seen corresponding path program 1 times [2023-12-24 13:51:08,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:08,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576686271] [2023-12-24 13:51:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:08,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:08,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:08,602 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:08,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 13:51:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:08,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:51:08,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:51:09,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:09,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:09,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576686271] [2023-12-24 13:51:09,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576686271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:09,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:09,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 13:51:09,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667920529] [2023-12-24 13:51:09,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:09,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:51:09,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:09,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:51:09,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:51:09,006 INFO L87 Difference]: Start difference. First operand 122 states and 170 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:09,324 INFO L93 Difference]: Finished difference Result 262 states and 362 transitions. [2023-12-24 13:51:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 13:51:09,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2023-12-24 13:51:09,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:09,325 INFO L225 Difference]: With dead ends: 262 [2023-12-24 13:51:09,325 INFO L226 Difference]: Without dead ends: 141 [2023-12-24 13:51:09,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:51:09,326 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 43 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:09,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 739 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:51:09,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-24 13:51:09,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 124. [2023-12-24 13:51:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 110 states have (on average 1.3454545454545455) internal successors, (148), 110 states have internal predecessors, (148), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 172 transitions. [2023-12-24 13:51:09,330 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 172 transitions. Word has length 114 [2023-12-24 13:51:09,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:09,330 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 172 transitions. [2023-12-24 13:51:09,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 172 transitions. [2023-12-24 13:51:09,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 13:51:09,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:09,331 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:09,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:09,539 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 13:51:09,539 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:09,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:09,540 INFO L85 PathProgramCache]: Analyzing trace with hash -911860608, now seen corresponding path program 1 times [2023-12-24 13:51:09,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:09,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000771376] [2023-12-24 13:51:09,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:09,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:09,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:09,544 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 13:51:09,602 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 13:51:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:09,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:51:09,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:10,110 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:51:10,111 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 13:51:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 13:51:10,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:10,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000771376] [2023-12-24 13:51:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000771376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:10,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:10,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:51:10,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050380760] [2023-12-24 13:51:10,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:10,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:51:10,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:10,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:51:10,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:51:10,171 INFO L87 Difference]: Start difference. First operand 124 states and 172 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:12,793 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 13:51:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:12,899 INFO L93 Difference]: Finished difference Result 251 states and 349 transitions. [2023-12-24 13:51:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:51:12,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-12-24 13:51:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:12,900 INFO L225 Difference]: With dead ends: 251 [2023-12-24 13:51:12,900 INFO L226 Difference]: Without dead ends: 128 [2023-12-24 13:51:12,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:51:12,901 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 144 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:12,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 405 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 13:51:12,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-24 13:51:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2023-12-24 13:51:12,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 108 states have (on average 1.3425925925925926) internal successors, (145), 108 states have internal predecessors, (145), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 169 transitions. [2023-12-24 13:51:12,905 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 169 transitions. Word has length 114 [2023-12-24 13:51:12,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:12,905 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 169 transitions. [2023-12-24 13:51:12,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:12,905 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 169 transitions. [2023-12-24 13:51:12,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 13:51:12,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:12,906 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:12,917 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 13:51:13,116 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 13:51:13,117 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:13,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:13,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2104443976, now seen corresponding path program 1 times [2023-12-24 13:51:13,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:13,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429828680] [2023-12-24 13:51:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:13,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:13,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:13,119 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:13,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 13:51:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:13,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 13:51:13,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:13,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:51:13,697 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 154 treesize of output 64 [2023-12-24 13:51:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 108 proven. 8 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 13:51:13,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:51:14,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:51:14,120 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 98 treesize of output 1 [2023-12-24 13:51:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-24 13:51:14,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:14,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429828680] [2023-12-24 13:51:14,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429828680] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 13:51:14,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:51:14,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 13:51:14,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310863536] [2023-12-24 13:51:14,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:51:14,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 13:51:14,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:14,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 13:51:14,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:51:14,125 INFO L87 Difference]: Start difference. First operand 122 states and 169 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-24 13:51:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:17,657 INFO L93 Difference]: Finished difference Result 256 states and 352 transitions. [2023-12-24 13:51:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 13:51:17,657 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 116 [2023-12-24 13:51:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:17,658 INFO L225 Difference]: With dead ends: 256 [2023-12-24 13:51:17,658 INFO L226 Difference]: Without dead ends: 124 [2023-12-24 13:51:17,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-12-24 13:51:17,659 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 145 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:17,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 700 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 13:51:17,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-24 13:51:17,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2023-12-24 13:51:17,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 108 states have (on average 1.3240740740740742) internal successors, (143), 108 states have internal predecessors, (143), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:17,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 167 transitions. [2023-12-24 13:51:17,665 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 167 transitions. Word has length 116 [2023-12-24 13:51:17,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:17,665 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 167 transitions. [2023-12-24 13:51:17,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-24 13:51:17,665 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 167 transitions. [2023-12-24 13:51:17,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 13:51:17,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:17,666 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:17,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:17,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:17,874 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:17,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash -237735302, now seen corresponding path program 1 times [2023-12-24 13:51:17,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:17,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142645560] [2023-12-24 13:51:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:17,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:17,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:17,877 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:17,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 13:51:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:18,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:51:18,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:18,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:51:18,448 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 173 treesize of output 65 [2023-12-24 13:51:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-24 13:51:18,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:18,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:18,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142645560] [2023-12-24 13:51:18,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142645560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:18,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:18,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:51:18,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347118833] [2023-12-24 13:51:18,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:18,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:51:18,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:18,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:51:18,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:51:18,502 INFO L87 Difference]: Start difference. First operand 122 states and 167 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:20,867 INFO L93 Difference]: Finished difference Result 249 states and 342 transitions. [2023-12-24 13:51:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:51:20,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2023-12-24 13:51:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:20,869 INFO L225 Difference]: With dead ends: 249 [2023-12-24 13:51:20,869 INFO L226 Difference]: Without dead ends: 128 [2023-12-24 13:51:20,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:51:20,870 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 125 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:20,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 398 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 13:51:20,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-24 13:51:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2023-12-24 13:51:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 108 states have (on average 1.3148148148148149) internal successors, (142), 108 states have internal predecessors, (142), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 166 transitions. [2023-12-24 13:51:20,874 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 166 transitions. Word has length 116 [2023-12-24 13:51:20,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:20,874 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 166 transitions. [2023-12-24 13:51:20,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 166 transitions. [2023-12-24 13:51:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 13:51:20,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:20,875 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:20,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:21,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:21,080 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:21,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:21,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1004360128, now seen corresponding path program 1 times [2023-12-24 13:51:21,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:21,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534550860] [2023-12-24 13:51:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:21,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:21,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:21,092 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:21,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 13:51:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:21,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:51:21,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:21,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:51:21,628 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 173 treesize of output 65 [2023-12-24 13:51:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 13:51:21,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:21,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:21,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534550860] [2023-12-24 13:51:21,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534550860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:21,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:21,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:51:21,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075345845] [2023-12-24 13:51:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:21,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:51:21,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:21,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:51:21,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:51:21,671 INFO L87 Difference]: Start difference. First operand 122 states and 166 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:23,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:51:25,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:51:25,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:25,499 INFO L93 Difference]: Finished difference Result 249 states and 340 transitions. [2023-12-24 13:51:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:51:25,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2023-12-24 13:51:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:25,514 INFO L225 Difference]: With dead ends: 249 [2023-12-24 13:51:25,514 INFO L226 Difference]: Without dead ends: 128 [2023-12-24 13:51:25,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:51:25,515 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 119 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:25,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 394 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-24 13:51:25,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-24 13:51:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2023-12-24 13:51:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 108 states have (on average 1.3055555555555556) internal successors, (141), 108 states have internal predecessors, (141), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 165 transitions. [2023-12-24 13:51:25,523 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 165 transitions. Word has length 118 [2023-12-24 13:51:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:25,523 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 165 transitions. [2023-12-24 13:51:25,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 165 transitions. [2023-12-24 13:51:25,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 13:51:25,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:25,524 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:25,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:25,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:25,733 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:25,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:25,733 INFO L85 PathProgramCache]: Analyzing trace with hash -764725830, now seen corresponding path program 1 times [2023-12-24 13:51:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:25,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418737340] [2023-12-24 13:51:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:25,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:25,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:25,735 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:25,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 13:51:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:26,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:51:26,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:26,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:51:26,429 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 175 treesize of output 67 [2023-12-24 13:51:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 13:51:26,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:26,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:26,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418737340] [2023-12-24 13:51:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418737340] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:26,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:26,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:51:26,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119918858] [2023-12-24 13:51:26,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:26,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:51:26,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:51:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:51:26,484 INFO L87 Difference]: Start difference. First operand 122 states and 165 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:29,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:51:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:29,766 INFO L93 Difference]: Finished difference Result 249 states and 338 transitions. [2023-12-24 13:51:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:51:29,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2023-12-24 13:51:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:29,767 INFO L225 Difference]: With dead ends: 249 [2023-12-24 13:51:29,767 INFO L226 Difference]: Without dead ends: 128 [2023-12-24 13:51:29,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:51:29,768 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 108 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:29,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 387 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 13:51:29,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-24 13:51:29,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2023-12-24 13:51:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 108 states have internal predecessors, (140), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:29,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 164 transitions. [2023-12-24 13:51:29,774 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 164 transitions. Word has length 120 [2023-12-24 13:51:29,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:29,775 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 164 transitions. [2023-12-24 13:51:29,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:29,775 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 164 transitions. [2023-12-24 13:51:29,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 13:51:29,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:29,776 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:29,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:29,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:29,985 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:29,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:29,985 INFO L85 PathProgramCache]: Analyzing trace with hash -631589120, now seen corresponding path program 1 times [2023-12-24 13:51:29,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:29,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113590310] [2023-12-24 13:51:29,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:29,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:29,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:29,987 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:29,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 13:51:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:30,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 13:51:30,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:30,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 13:51:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:51:30,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:30,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:30,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113590310] [2023-12-24 13:51:30,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113590310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:30,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:30,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 13:51:30,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35163407] [2023-12-24 13:51:30,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:30,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 13:51:30,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:30,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 13:51:30,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 13:51:30,437 INFO L87 Difference]: Start difference. First operand 122 states and 164 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:31,641 INFO L93 Difference]: Finished difference Result 243 states and 327 transitions. [2023-12-24 13:51:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 13:51:31,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2023-12-24 13:51:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:31,642 INFO L225 Difference]: With dead ends: 243 [2023-12-24 13:51:31,642 INFO L226 Difference]: Without dead ends: 122 [2023-12-24 13:51:31,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 13:51:31,642 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:31,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 13:51:31,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-24 13:51:31,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-12-24 13:51:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 108 states have (on average 1.2777777777777777) internal successors, (138), 108 states have internal predecessors, (138), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 162 transitions. [2023-12-24 13:51:31,646 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 162 transitions. Word has length 122 [2023-12-24 13:51:31,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:31,646 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 162 transitions. [2023-12-24 13:51:31,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 162 transitions. [2023-12-24 13:51:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 13:51:31,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:31,649 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:31,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:31,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:31,849 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:31,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:31,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1669233470, now seen corresponding path program 1 times [2023-12-24 13:51:31,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:31,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474819897] [2023-12-24 13:51:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:31,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:31,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:31,852 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:31,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 13:51:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:32,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 13:51:32,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:32,361 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 26 treesize of output 22 [2023-12-24 13:51:32,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 13:51:32,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 80 [2023-12-24 13:51:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:51:33,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:33,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:33,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474819897] [2023-12-24 13:51:33,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474819897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:33,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:33,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 13:51:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948553039] [2023-12-24 13:51:33,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:33,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 13:51:33,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 13:51:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:51:33,081 INFO L87 Difference]: Start difference. First operand 122 states and 162 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:36,434 INFO L93 Difference]: Finished difference Result 561 states and 748 transitions. [2023-12-24 13:51:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 13:51:36,434 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2023-12-24 13:51:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:36,436 INFO L225 Difference]: With dead ends: 561 [2023-12-24 13:51:36,436 INFO L226 Difference]: Without dead ends: 440 [2023-12-24 13:51:36,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:51:36,437 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 513 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:36,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1458 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 13:51:36,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-24 13:51:36,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 136. [2023-12-24 13:51:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 122 states have (on average 1.2950819672131149) internal successors, (158), 122 states have internal predecessors, (158), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2023-12-24 13:51:36,445 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 122 [2023-12-24 13:51:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:36,445 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2023-12-24 13:51:36,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2023-12-24 13:51:36,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 13:51:36,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:36,446 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:36,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:36,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:36,646 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:36,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:36,647 INFO L85 PathProgramCache]: Analyzing trace with hash 389369792, now seen corresponding path program 1 times [2023-12-24 13:51:36,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:36,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184321950] [2023-12-24 13:51:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:36,647 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:36,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:36,648 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:36,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 13:51:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:37,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 13:51:37,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:37,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 22 [2023-12-24 13:51:37,133 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 22 treesize of output 18 [2023-12-24 13:51:37,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:51:37,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 27 [2023-12-24 13:51:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:51:37,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:37,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:37,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184321950] [2023-12-24 13:51:37,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184321950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:37,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:37,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 13:51:37,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924058777] [2023-12-24 13:51:37,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:37,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 13:51:37,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:37,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 13:51:37,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:51:37,550 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:39,310 INFO L93 Difference]: Finished difference Result 520 states and 693 transitions. [2023-12-24 13:51:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 13:51:39,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2023-12-24 13:51:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:39,313 INFO L225 Difference]: With dead ends: 520 [2023-12-24 13:51:39,313 INFO L226 Difference]: Without dead ends: 385 [2023-12-24 13:51:39,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:51:39,314 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 355 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:39,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 912 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 13:51:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-24 13:51:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 235. [2023-12-24 13:51:39,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 210 states have (on average 1.2857142857142858) internal successors, (270), 211 states have internal predecessors, (270), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-24 13:51:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 314 transitions. [2023-12-24 13:51:39,326 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 314 transitions. Word has length 122 [2023-12-24 13:51:39,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:39,326 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 314 transitions. [2023-12-24 13:51:39,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:39,326 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 314 transitions. [2023-12-24 13:51:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 13:51:39,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:39,327 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:39,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:39,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:39,537 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:39,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:39,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1246531644, now seen corresponding path program 1 times [2023-12-24 13:51:39,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:39,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311356084] [2023-12-24 13:51:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:39,538 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 13:51:39,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:39,539 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:39,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 13:51:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:39,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 13:51:39,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:40,011 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 26 treesize of output 22 [2023-12-24 13:51:40,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 13:51:40,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 68 [2023-12-24 13:51:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:51:40,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:40,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:40,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311356084] [2023-12-24 13:51:40,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311356084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:40,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:40,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 13:51:40,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098688528] [2023-12-24 13:51:40,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:40,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 13:51:40,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:40,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 13:51:40,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:51:40,558 INFO L87 Difference]: Start difference. First operand 235 states and 314 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:43,777 INFO L93 Difference]: Finished difference Result 930 states and 1241 transitions. [2023-12-24 13:51:43,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 13:51:43,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2023-12-24 13:51:43,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:43,782 INFO L225 Difference]: With dead ends: 930 [2023-12-24 13:51:43,782 INFO L226 Difference]: Without dead ends: 696 [2023-12-24 13:51:43,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2023-12-24 13:51:43,783 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 421 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:43,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1691 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 13:51:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-24 13:51:43,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 240. [2023-12-24 13:51:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 215 states have (on average 1.2930232558139534) internal successors, (278), 216 states have internal predecessors, (278), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-24 13:51:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 322 transitions. [2023-12-24 13:51:43,798 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 322 transitions. Word has length 122 [2023-12-24 13:51:43,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:43,798 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 322 transitions. [2023-12-24 13:51:43,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:51:43,798 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 322 transitions. [2023-12-24 13:51:43,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 13:51:43,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:43,799 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:43,821 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 (19)] Forceful destruction successful, exit code 0 [2023-12-24 13:51:44,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:44,009 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:44,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:44,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1416068542, now seen corresponding path program 1 times [2023-12-24 13:51:44,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:44,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367405040] [2023-12-24 13:51:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:44,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:44,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:44,011 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:44,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 13:51:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:44,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 13:51:44,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:44,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:51:44,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-24 13:51:44,967 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 51 treesize of output 42 [2023-12-24 13:51:45,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:51:45,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 23 [2023-12-24 13:51:45,385 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-24 13:51:45,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:45,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:45,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367405040] [2023-12-24 13:51:45,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367405040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:45,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:45,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 13:51:45,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562500177] [2023-12-24 13:51:45,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:45,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 13:51:45,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 13:51:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:51:45,387 INFO L87 Difference]: Start difference. First operand 240 states and 322 transitions. Second operand has 11 states, 10 states have (on average 7.1) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:51:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:51:47,977 INFO L93 Difference]: Finished difference Result 643 states and 855 transitions. [2023-12-24 13:51:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 13:51:47,978 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 122 [2023-12-24 13:51:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:51:47,979 INFO L225 Difference]: With dead ends: 643 [2023-12-24 13:51:47,979 INFO L226 Difference]: Without dead ends: 404 [2023-12-24 13:51:47,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2023-12-24 13:51:47,980 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 350 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:51:47,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1260 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 13:51:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-12-24 13:51:47,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 150. [2023-12-24 13:51:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 135 states have (on average 1.288888888888889) internal successors, (174), 135 states have internal predecessors, (174), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:51:48,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 198 transitions. [2023-12-24 13:51:48,004 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 198 transitions. Word has length 122 [2023-12-24 13:51:48,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:51:48,004 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 198 transitions. [2023-12-24 13:51:48,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:51:48,005 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 198 transitions. [2023-12-24 13:51:48,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 13:51:48,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:51:48,005 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:51:48,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-24 13:51:48,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:48,206 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:51:48,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:51:48,206 INFO L85 PathProgramCache]: Analyzing trace with hash -702505792, now seen corresponding path program 1 times [2023-12-24 13:51:48,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:51:48,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704394556] [2023-12-24 13:51:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:51:48,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:51:48,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:51:48,208 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:51:48,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 13:51:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:51:48,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 13:51:48,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:51:48,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:51:48,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-24 13:51:48,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2023-12-24 13:51:49,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:51:49,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 25 [2023-12-24 13:51:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-24 13:51:55,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:51:55,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:51:55,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704394556] [2023-12-24 13:51:55,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704394556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:51:55,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:51:55,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 13:51:55,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108838418] [2023-12-24 13:51:55,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:51:55,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 13:51:55,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:51:55,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 13:51:55,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:51:55,140 INFO L87 Difference]: Start difference. First operand 150 states and 198 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 states have internal predecessors, (68), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:51:56,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s 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 13:51:58,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:52:04,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:52:08,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:52:09,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:52:09,963 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2023-12-24 13:52:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 13:52:09,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 states have internal predecessors, (68), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2023-12-24 13:52:09,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:52:09,965 INFO L225 Difference]: With dead ends: 417 [2023-12-24 13:52:09,965 INFO L226 Difference]: Without dead ends: 268 [2023-12-24 13:52:09,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-24 13:52:09,965 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 354 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:52:09,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 873 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 399 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2023-12-24 13:52:09,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-24 13:52:09,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 150. [2023-12-24 13:52:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 135 states have (on average 1.2814814814814814) internal successors, (173), 135 states have internal predecessors, (173), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:52:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 197 transitions. [2023-12-24 13:52:09,974 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 197 transitions. Word has length 122 [2023-12-24 13:52:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:52:09,974 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 197 transitions. [2023-12-24 13:52:09,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 states have internal predecessors, (68), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:52:09,974 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 197 transitions. [2023-12-24 13:52:09,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 13:52:09,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:52:09,975 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:52:10,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 13:52:10,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:52:10,186 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:52:10,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:52:10,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1982369470, now seen corresponding path program 1 times [2023-12-24 13:52:10,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:52:10,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604175575] [2023-12-24 13:52:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:52:10,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:52:10,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:52:10,188 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:52:10,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 13:52:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:52:10,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 13:52:10,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:52:11,055 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 52 treesize of output 43 [2023-12-24 13:52:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 13:52:11,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:52:11,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:52:11,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604175575] [2023-12-24 13:52:11,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604175575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:52:11,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:52:11,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-24 13:52:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490366310] [2023-12-24 13:52:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:52:11,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 13:52:11,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:52:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 13:52:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-24 13:52:11,340 INFO L87 Difference]: Start difference. First operand 150 states and 197 transitions. Second operand has 14 states, 12 states have (on average 5.916666666666667) internal successors, (71), 13 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:52:14,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:52:14,386 INFO L93 Difference]: Finished difference Result 392 states and 511 transitions. [2023-12-24 13:52:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 13:52:14,387 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.916666666666667) internal successors, (71), 13 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 122 [2023-12-24 13:52:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:52:14,388 INFO L225 Difference]: With dead ends: 392 [2023-12-24 13:52:14,388 INFO L226 Difference]: Without dead ends: 243 [2023-12-24 13:52:14,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:52:14,389 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 315 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 13:52:14,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1336 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 13:52:14,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-24 13:52:14,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 153. [2023-12-24 13:52:14,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 137 states have (on average 1.27007299270073) internal successors, (174), 137 states have internal predecessors, (174), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:52:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 198 transitions. [2023-12-24 13:52:14,399 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 198 transitions. Word has length 122 [2023-12-24 13:52:14,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:52:14,400 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 198 transitions. [2023-12-24 13:52:14,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.916666666666667) internal successors, (71), 13 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:52:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 198 transitions. [2023-12-24 13:52:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 13:52:14,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:52:14,400 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:52:14,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-24 13:52:14,610 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 13:52:14,610 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:52:14,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:52:14,610 INFO L85 PathProgramCache]: Analyzing trace with hash 507159492, now seen corresponding path program 1 times [2023-12-24 13:52:14,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:52:14,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365384152] [2023-12-24 13:52:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:52:14,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:52:14,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:52:14,612 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 13:52:14,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 13:52:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:52:15,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 13:52:15,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:52:15,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:52:15,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 44 [2023-12-24 13:52:16,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:52:16,923 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 92 treesize of output 60 [2023-12-24 13:52:17,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 93 [2023-12-24 13:52:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 13:52:17,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:52:17,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:52:17,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365384152] [2023-12-24 13:52:17,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365384152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:52:17,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:52:17,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-24 13:52:17,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824925929] [2023-12-24 13:52:17,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:52:17,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 13:52:17,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:52:17,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 13:52:17,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-12-24 13:52:17,316 INFO L87 Difference]: Start difference. First operand 153 states and 198 transitions. Second operand has 20 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 19 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:52:25,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:52:25,122 INFO L93 Difference]: Finished difference Result 574 states and 748 transitions. [2023-12-24 13:52:25,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-24 13:52:25,131 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 19 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 122 [2023-12-24 13:52:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:52:25,132 INFO L225 Difference]: With dead ends: 574 [2023-12-24 13:52:25,132 INFO L226 Difference]: Without dead ends: 422 [2023-12-24 13:52:25,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=301, Invalid=1769, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 13:52:25,133 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 609 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:52:25,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 2584 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1754 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-24 13:52:25,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-24 13:52:25,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 159. [2023-12-24 13:52:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 143 states have (on average 1.2727272727272727) internal successors, (182), 143 states have internal predecessors, (182), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:52:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 206 transitions. [2023-12-24 13:52:25,160 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 206 transitions. Word has length 122 [2023-12-24 13:52:25,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:52:25,161 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 206 transitions. [2023-12-24 13:52:25,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 19 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:52:25,161 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 206 transitions. [2023-12-24 13:52:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 13:52:25,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:52:25,162 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:52:25,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-24 13:52:25,373 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 13:52:25,373 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:52:25,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:52:25,373 INFO L85 PathProgramCache]: Analyzing trace with hash 84457666, now seen corresponding path program 1 times [2023-12-24 13:52:25,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:52:25,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624602640] [2023-12-24 13:52:25,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:52:25,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:52:25,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:52:25,375 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:52:25,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 13:52:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:52:26,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 13:52:26,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:52:26,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:52:26,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 48 [2023-12-24 13:52:27,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:52:27,914 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 76 treesize of output 44 [2023-12-24 13:52:28,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 83 [2023-12-24 13:52:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 13:52:28,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:52:28,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:52:28,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624602640] [2023-12-24 13:52:28,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624602640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:52:28,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:52:28,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-24 13:52:28,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91569755] [2023-12-24 13:52:28,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:52:28,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-24 13:52:28,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:52:28,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-24 13:52:28,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2023-12-24 13:52:28,300 INFO L87 Difference]: Start difference. First operand 159 states and 206 transitions. Second operand has 21 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:52:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:52:38,155 INFO L93 Difference]: Finished difference Result 590 states and 768 transitions. [2023-12-24 13:52:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-24 13:52:38,156 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 122 [2023-12-24 13:52:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:52:38,157 INFO L225 Difference]: With dead ends: 590 [2023-12-24 13:52:38,157 INFO L226 Difference]: Without dead ends: 432 [2023-12-24 13:52:38,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 13:52:38,158 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 727 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:52:38,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 2832 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-24 13:52:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-24 13:52:38,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 161. [2023-12-24 13:52:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 145 states have (on average 1.2758620689655173) internal successors, (185), 145 states have internal predecessors, (185), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:52:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2023-12-24 13:52:38,183 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 122 [2023-12-24 13:52:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:52:38,183 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2023-12-24 13:52:38,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:52:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2023-12-24 13:52:38,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 13:52:38,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:52:38,184 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:52:38,204 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 (24)] Forceful destruction successful, exit code 0 [2023-12-24 13:52:38,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:52:38,407 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:52:38,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:52:38,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1223838995, now seen corresponding path program 1 times [2023-12-24 13:52:38,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:52:38,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886206700] [2023-12-24 13:52:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:52:38,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:52:38,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:52:38,409 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:52:38,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 13:52:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:52:38,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:52:38,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:52:39,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 13:52:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-24 13:52:39,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:52:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:52:39,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:52:39,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886206700] [2023-12-24 13:52:39,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886206700] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:52:39,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:52:39,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-24 13:52:39,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667308257] [2023-12-24 13:52:39,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:52:39,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:52:39,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:52:39,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:52:39,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:52:39,720 INFO L87 Difference]: Start difference. First operand 161 states and 209 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:52:39,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:52:39,846 INFO L93 Difference]: Finished difference Result 348 states and 451 transitions. [2023-12-24 13:52:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:52:39,847 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 123 [2023-12-24 13:52:39,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:52:39,847 INFO L225 Difference]: With dead ends: 348 [2023-12-24 13:52:39,847 INFO L226 Difference]: Without dead ends: 188 [2023-12-24 13:52:39,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 13:52:39,848 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 133 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:52:39,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 385 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:52:39,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-24 13:52:39,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 161. [2023-12-24 13:52:39,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 145 states have (on average 1.2482758620689656) internal successors, (181), 145 states have internal predecessors, (181), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:52:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 205 transitions. [2023-12-24 13:52:39,859 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 205 transitions. Word has length 123 [2023-12-24 13:52:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:52:39,859 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 205 transitions. [2023-12-24 13:52:39,859 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:52:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 205 transitions. [2023-12-24 13:52:39,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 13:52:39,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:52:39,860 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:52:39,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 13:52:40,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:52:40,060 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:52:40,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:52:40,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2046779997, now seen corresponding path program 1 times [2023-12-24 13:52:40,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:52:40,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162442929] [2023-12-24 13:52:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:52:40,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:52:40,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:52:40,063 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:52:40,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 13:52:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:52:40,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 13:52:40,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:52:40,536 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 26 treesize of output 22 [2023-12-24 13:52:41,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:52:41,249 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 76 treesize of output 50 [2023-12-24 13:52:41,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 87 [2023-12-24 13:52:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:52:41,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:52:41,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:52:41,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162442929] [2023-12-24 13:52:41,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162442929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:52:41,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:52:41,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-24 13:52:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285327379] [2023-12-24 13:52:41,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:52:41,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 13:52:41,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:52:41,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 13:52:41,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 13:52:41,617 INFO L87 Difference]: Start difference. First operand 161 states and 205 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:52:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:52:47,156 INFO L93 Difference]: Finished difference Result 621 states and 798 transitions. [2023-12-24 13:52:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 13:52:47,157 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 124 [2023-12-24 13:52:47,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:52:47,158 INFO L225 Difference]: With dead ends: 621 [2023-12-24 13:52:47,158 INFO L226 Difference]: Without dead ends: 461 [2023-12-24 13:52:47,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-12-24 13:52:47,159 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 435 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:52:47,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 2637 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-24 13:52:47,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-12-24 13:52:47,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 163. [2023-12-24 13:52:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 147 states have (on average 1.251700680272109) internal successors, (184), 147 states have internal predecessors, (184), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:52:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 208 transitions. [2023-12-24 13:52:47,171 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 208 transitions. Word has length 124 [2023-12-24 13:52:47,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:52:47,171 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 208 transitions. [2023-12-24 13:52:47,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:52:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 208 transitions. [2023-12-24 13:52:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 13:52:47,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:52:47,172 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:52:47,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 13:52:47,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:52:47,383 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:52:47,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:52:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1906231387, now seen corresponding path program 1 times [2023-12-24 13:52:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:52:47,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926104048] [2023-12-24 13:52:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:52:47,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:52:47,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:52:47,385 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:52:47,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 13:52:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:52:47,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 13:52:47,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:52:47,908 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 26 treesize of output 22 [2023-12-24 13:52:48,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 13:52:48,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 69 [2023-12-24 13:52:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:52:48,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:52:48,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:52:48,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926104048] [2023-12-24 13:52:48,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926104048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:52:48,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:52:48,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 13:52:48,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200392903] [2023-12-24 13:52:48,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:52:48,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 13:52:48,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:52:48,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 13:52:48,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:52:48,532 INFO L87 Difference]: Start difference. First operand 163 states and 208 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:52:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:52:50,527 INFO L93 Difference]: Finished difference Result 544 states and 694 transitions. [2023-12-24 13:52:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 13:52:50,528 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 124 [2023-12-24 13:52:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:52:50,530 INFO L225 Difference]: With dead ends: 544 [2023-12-24 13:52:50,530 INFO L226 Difference]: Without dead ends: 382 [2023-12-24 13:52:50,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:52:50,530 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 402 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:52:50,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1160 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 13:52:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-12-24 13:52:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 153. [2023-12-24 13:52:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 137 states have (on average 1.2481751824817517) internal successors, (171), 137 states have internal predecessors, (171), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:52:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 195 transitions. [2023-12-24 13:52:50,545 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 195 transitions. Word has length 124 [2023-12-24 13:52:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:52:50,545 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 195 transitions. [2023-12-24 13:52:50,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:52:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 195 transitions. [2023-12-24 13:52:50,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 13:52:50,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:52:50,546 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:52:50,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 13:52:50,756 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 13:52:50,757 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:52:50,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:52:50,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1799891671, now seen corresponding path program 1 times [2023-12-24 13:52:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:52:50,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907137587] [2023-12-24 13:52:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:52:50,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:52:50,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:52:50,759 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 13:52:50,759 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 13:52:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:52:51,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 13:52:51,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:52:51,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:52:52,072 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 53 treesize of output 44 [2023-12-24 13:52:53,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:52:53,295 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 91 treesize of output 59 [2023-12-24 13:52:53,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 80 [2023-12-24 13:52:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 13:52:53,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:52:53,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:52:53,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907137587] [2023-12-24 13:52:53,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907137587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:52:53,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:52:53,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-24 13:52:53,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404619007] [2023-12-24 13:52:53,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:52:53,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 13:52:53,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:52:53,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 13:52:53,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-12-24 13:52:53,645 INFO L87 Difference]: Start difference. First operand 153 states and 195 transitions. Second operand has 20 states, 18 states have (on average 4.055555555555555) internal successors, (73), 19 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:00,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:00,756 INFO L93 Difference]: Finished difference Result 490 states and 631 transitions. [2023-12-24 13:53:00,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-24 13:53:00,757 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.055555555555555) internal successors, (73), 19 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2023-12-24 13:53:00,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:00,758 INFO L225 Difference]: With dead ends: 490 [2023-12-24 13:53:00,758 INFO L226 Difference]: Without dead ends: 338 [2023-12-24 13:53:00,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=252, Invalid=1470, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 13:53:00,759 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 408 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:00,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 2735 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-24 13:53:00,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-12-24 13:53:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 140. [2023-12-24 13:53:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 124 states have (on average 1.25) internal successors, (155), 124 states have internal predecessors, (155), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:53:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 179 transitions. [2023-12-24 13:53:00,771 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 179 transitions. Word has length 124 [2023-12-24 13:53:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:00,771 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 179 transitions. [2023-12-24 13:53:00,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.055555555555555) internal successors, (73), 19 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 179 transitions. [2023-12-24 13:53:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 13:53:00,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:00,772 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:00,784 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 13:53:00,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:00,972 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:00,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:00,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1872803189, now seen corresponding path program 1 times [2023-12-24 13:53:00,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:00,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075756015] [2023-12-24 13:53:00,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:00,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:00,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:00,974 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:00,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 13:53:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:01,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 13:53:01,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:02,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-12-24 13:53:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 13:53:03,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:03,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075756015] [2023-12-24 13:53:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075756015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:03,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:03,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-24 13:53:03,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446646748] [2023-12-24 13:53:03,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:03,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 13:53:03,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 13:53:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:53:03,035 INFO L87 Difference]: Start difference. First operand 140 states and 179 transitions. Second operand has 17 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:07,187 INFO L93 Difference]: Finished difference Result 401 states and 511 transitions. [2023-12-24 13:53:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 13:53:07,188 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2023-12-24 13:53:07,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:07,189 INFO L225 Difference]: With dead ends: 401 [2023-12-24 13:53:07,189 INFO L226 Difference]: Without dead ends: 262 [2023-12-24 13:53:07,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 13:53:07,190 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 385 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:07,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1541 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-24 13:53:07,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-24 13:53:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 177. [2023-12-24 13:53:07,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 161 states have (on average 1.236024844720497) internal successors, (199), 161 states have internal predecessors, (199), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:53:07,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 223 transitions. [2023-12-24 13:53:07,202 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 223 transitions. Word has length 124 [2023-12-24 13:53:07,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:07,203 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 223 transitions. [2023-12-24 13:53:07,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:07,203 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 223 transitions. [2023-12-24 13:53:07,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 13:53:07,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:07,204 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:07,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 13:53:07,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:07,404 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:07,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2013351799, now seen corresponding path program 1 times [2023-12-24 13:53:07,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:07,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109122238] [2023-12-24 13:53:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:07,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:07,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:07,406 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:07,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 13:53:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:07,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:53:07,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:07,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 24 [2023-12-24 13:53:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:53:08,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:08,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:08,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109122238] [2023-12-24 13:53:08,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109122238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:08,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:08,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:53:08,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248739453] [2023-12-24 13:53:08,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:08,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:53:08,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:08,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:53:08,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:53:08,008 INFO L87 Difference]: Start difference. First operand 177 states and 223 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:08,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:08,589 INFO L93 Difference]: Finished difference Result 474 states and 594 transitions. [2023-12-24 13:53:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:53:08,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 124 [2023-12-24 13:53:08,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:08,591 INFO L225 Difference]: With dead ends: 474 [2023-12-24 13:53:08,591 INFO L226 Difference]: Without dead ends: 298 [2023-12-24 13:53:08,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 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 13:53:08,592 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 128 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:08,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 473 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 13:53:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-24 13:53:08,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 213. [2023-12-24 13:53:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 197 states have (on average 1.2233502538071066) internal successors, (241), 197 states have internal predecessors, (241), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:53:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 265 transitions. [2023-12-24 13:53:08,619 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 265 transitions. Word has length 124 [2023-12-24 13:53:08,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:08,620 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 265 transitions. [2023-12-24 13:53:08,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 265 transitions. [2023-12-24 13:53:08,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 13:53:08,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:08,620 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:08,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 13:53:08,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:08,830 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:08,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2023450059, now seen corresponding path program 1 times [2023-12-24 13:53:08,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:08,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703819536] [2023-12-24 13:53:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:08,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:08,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:08,832 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:08,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 13:53:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:09,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 13:53:09,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:09,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-12-24 13:53:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 13:53:10,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:10,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:10,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703819536] [2023-12-24 13:53:10,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703819536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:10,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:10,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-24 13:53:10,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440730034] [2023-12-24 13:53:10,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:10,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 13:53:10,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:10,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 13:53:10,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-24 13:53:10,368 INFO L87 Difference]: Start difference. First operand 213 states and 265 transitions. Second operand has 16 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:14,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:14,607 INFO L93 Difference]: Finished difference Result 609 states and 762 transitions. [2023-12-24 13:53:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 13:53:14,608 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2023-12-24 13:53:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:14,609 INFO L225 Difference]: With dead ends: 609 [2023-12-24 13:53:14,609 INFO L226 Difference]: Without dead ends: 397 [2023-12-24 13:53:14,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=234, Invalid=1172, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 13:53:14,610 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 498 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:14,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1761 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-24 13:53:14,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-12-24 13:53:14,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 243. [2023-12-24 13:53:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 227 states have (on average 1.2070484581497798) internal successors, (274), 227 states have internal predecessors, (274), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:53:14,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 298 transitions. [2023-12-24 13:53:14,624 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 298 transitions. Word has length 124 [2023-12-24 13:53:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:14,624 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 298 transitions. [2023-12-24 13:53:14,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 298 transitions. [2023-12-24 13:53:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 13:53:14,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:14,625 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:14,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 13:53:14,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:14,834 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:14,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:14,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2046102792, now seen corresponding path program 1 times [2023-12-24 13:53:14,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:14,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103369981] [2023-12-24 13:53:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:14,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:14,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:14,836 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:14,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 13:53:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:15,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 13:53:15,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:15,242 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 14 treesize of output 10 [2023-12-24 13:53:15,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2023-12-24 13:53:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:53:15,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:15,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:15,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103369981] [2023-12-24 13:53:15,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103369981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:15,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:15,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:53:15,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762785835] [2023-12-24 13:53:15,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:15,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:53:15,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:53:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:53:15,388 INFO L87 Difference]: Start difference. First operand 243 states and 298 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:15,735 INFO L93 Difference]: Finished difference Result 750 states and 923 transitions. [2023-12-24 13:53:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 13:53:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 125 [2023-12-24 13:53:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:15,737 INFO L225 Difference]: With dead ends: 750 [2023-12-24 13:53:15,737 INFO L226 Difference]: Without dead ends: 508 [2023-12-24 13:53:15,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:53:15,738 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 177 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:15,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 984 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:53:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-12-24 13:53:15,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 469. [2023-12-24 13:53:15,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 438 states have (on average 1.2054794520547945) internal successors, (528), 438 states have internal predecessors, (528), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 13:53:15,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 576 transitions. [2023-12-24 13:53:15,764 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 576 transitions. Word has length 125 [2023-12-24 13:53:15,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:15,764 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 576 transitions. [2023-12-24 13:53:15,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:15,764 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 576 transitions. [2023-12-24 13:53:15,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 13:53:15,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:15,765 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:15,790 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 (32)] Forceful destruction successful, exit code 0 [2023-12-24 13:53:15,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:15,975 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:15,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2108142406, now seen corresponding path program 1 times [2023-12-24 13:53:15,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:15,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155957129] [2023-12-24 13:53:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:15,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:15,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:15,977 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:15,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 13:53:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:16,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 13:53:16,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:16,454 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 26 treesize of output 22 [2023-12-24 13:53:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:53:18,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:18,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:18,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155957129] [2023-12-24 13:53:18,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155957129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:18,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:18,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-24 13:53:18,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463290279] [2023-12-24 13:53:18,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:18,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 13:53:18,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 13:53:18,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-24 13:53:18,117 INFO L87 Difference]: Start difference. First operand 469 states and 576 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:24,018 INFO L93 Difference]: Finished difference Result 1727 states and 2156 transitions. [2023-12-24 13:53:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 13:53:24,022 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 125 [2023-12-24 13:53:24,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:24,025 INFO L225 Difference]: With dead ends: 1727 [2023-12-24 13:53:24,026 INFO L226 Difference]: Without dead ends: 1259 [2023-12-24 13:53:24,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:53:24,041 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 421 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:24,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 2444 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-24 13:53:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-12-24 13:53:24,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 557. [2023-12-24 13:53:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 526 states have (on average 1.2053231939163498) internal successors, (634), 526 states have internal predecessors, (634), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 13:53:24,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 682 transitions. [2023-12-24 13:53:24,116 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 682 transitions. Word has length 125 [2023-12-24 13:53:24,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:24,116 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 682 transitions. [2023-12-24 13:53:24,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:24,117 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 682 transitions. [2023-12-24 13:53:24,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 13:53:24,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:24,117 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:24,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-24 13:53:24,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:24,318 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:24,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:24,318 INFO L85 PathProgramCache]: Analyzing trace with hash -263596856, now seen corresponding path program 1 times [2023-12-24 13:53:24,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:24,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98774492] [2023-12-24 13:53:24,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:24,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:24,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:24,320 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:24,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 13:53:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:24,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 13:53:24,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:25,314 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-24 13:53:25,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:53:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:53:25,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:25,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98774492] [2023-12-24 13:53:25,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98774492] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:53:25,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:53:25,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-12-24 13:53:25,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180690943] [2023-12-24 13:53:25,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:25,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:53:25,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:25,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:53:25,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:53:25,477 INFO L87 Difference]: Start difference. First operand 557 states and 682 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:25,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:25,666 INFO L93 Difference]: Finished difference Result 1173 states and 1435 transitions. [2023-12-24 13:53:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:53:25,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 125 [2023-12-24 13:53:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:25,669 INFO L225 Difference]: With dead ends: 1173 [2023-12-24 13:53:25,669 INFO L226 Difference]: Without dead ends: 617 [2023-12-24 13:53:25,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:53:25,675 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 55 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:25,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 512 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:53:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-24 13:53:25,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 527. [2023-12-24 13:53:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 496 states have (on average 1.1995967741935485) internal successors, (595), 496 states have internal predecessors, (595), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 13:53:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 643 transitions. [2023-12-24 13:53:25,710 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 643 transitions. Word has length 125 [2023-12-24 13:53:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:25,711 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 643 transitions. [2023-12-24 13:53:25,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 643 transitions. [2023-12-24 13:53:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 13:53:25,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:25,712 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:25,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 13:53:25,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:25,921 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:25,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash 136629954, now seen corresponding path program 1 times [2023-12-24 13:53:25,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:25,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475503324] [2023-12-24 13:53:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:25,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:25,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:25,925 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:25,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 13:53:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:26,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 13:53:26,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:26,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 43 [2023-12-24 13:53:28,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 118 [2023-12-24 13:53:29,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:53:29,039 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 108 treesize of output 66 [2023-12-24 13:53:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 13:53:29,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:29,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:29,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475503324] [2023-12-24 13:53:29,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475503324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:29,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:29,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-24 13:53:29,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453977590] [2023-12-24 13:53:29,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:29,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 13:53:29,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:29,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 13:53:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-12-24 13:53:29,137 INFO L87 Difference]: Start difference. First operand 527 states and 643 transitions. Second operand has 22 states, 20 states have (on average 3.7) internal successors, (74), 21 states have internal predecessors, (74), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:37,737 INFO L93 Difference]: Finished difference Result 1430 states and 1764 transitions. [2023-12-24 13:53:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-24 13:53:37,738 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.7) internal successors, (74), 21 states have internal predecessors, (74), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 125 [2023-12-24 13:53:37,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:37,740 INFO L225 Difference]: With dead ends: 1430 [2023-12-24 13:53:37,740 INFO L226 Difference]: Without dead ends: 904 [2023-12-24 13:53:37,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 13:53:37,741 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 473 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:37,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 2483 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-24 13:53:37,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-12-24 13:53:37,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 272. [2023-12-24 13:53:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 256 states have (on average 1.1953125) internal successors, (306), 256 states have internal predecessors, (306), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:53:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 330 transitions. [2023-12-24 13:53:37,759 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 330 transitions. Word has length 125 [2023-12-24 13:53:37,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:37,759 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 330 transitions. [2023-12-24 13:53:37,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.7) internal successors, (74), 21 states have internal predecessors, (74), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 330 transitions. [2023-12-24 13:53:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 13:53:37,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:37,760 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:37,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-12-24 13:53:37,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:37,970 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:37,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:37,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1386303568, now seen corresponding path program 1 times [2023-12-24 13:53:37,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:37,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48221676] [2023-12-24 13:53:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:37,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:37,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:37,972 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:37,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 13:53:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:38,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 13:53:38,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:39,189 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 50 treesize of output 34 [2023-12-24 13:53:39,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2023-12-24 13:53:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 13:53:39,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:39,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:39,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48221676] [2023-12-24 13:53:39,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48221676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:39,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:39,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-24 13:53:39,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624817379] [2023-12-24 13:53:39,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:39,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 13:53:39,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:39,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 13:53:39,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-24 13:53:39,406 INFO L87 Difference]: Start difference. First operand 272 states and 330 transitions. Second operand has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:42,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:42,722 INFO L93 Difference]: Finished difference Result 630 states and 773 transitions. [2023-12-24 13:53:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 13:53:42,722 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 126 [2023-12-24 13:53:42,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:42,724 INFO L225 Difference]: With dead ends: 630 [2023-12-24 13:53:42,724 INFO L226 Difference]: Without dead ends: 359 [2023-12-24 13:53:42,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2023-12-24 13:53:42,725 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 256 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:42,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1459 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 13:53:42,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-24 13:53:42,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 273. [2023-12-24 13:53:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 257 states have (on average 1.1945525291828794) internal successors, (307), 257 states have internal predecessors, (307), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:53:42,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 331 transitions. [2023-12-24 13:53:42,756 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 331 transitions. Word has length 126 [2023-12-24 13:53:42,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:42,757 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 331 transitions. [2023-12-24 13:53:42,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:42,757 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 331 transitions. [2023-12-24 13:53:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 13:53:42,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:42,758 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:42,767 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 (36)] Ended with exit code 0 [2023-12-24 13:53:42,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:42,967 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:42,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:42,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1644469006, now seen corresponding path program 1 times [2023-12-24 13:53:42,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:42,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918422867] [2023-12-24 13:53:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:42,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:42,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:42,969 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:42,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-24 13:53:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:43,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 13:53:43,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:43,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 13:53:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:53:43,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:43,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918422867] [2023-12-24 13:53:43,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918422867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:43,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:43,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:53:43,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632722423] [2023-12-24 13:53:43,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:43,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:53:43,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:43,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:53:43,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:53:43,599 INFO L87 Difference]: Start difference. First operand 273 states and 331 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:44,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:44,132 INFO L93 Difference]: Finished difference Result 626 states and 763 transitions. [2023-12-24 13:53:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:53:44,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 126 [2023-12-24 13:53:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:44,134 INFO L225 Difference]: With dead ends: 626 [2023-12-24 13:53:44,134 INFO L226 Difference]: Without dead ends: 354 [2023-12-24 13:53:44,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 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 13:53:44,135 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 118 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:44,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 578 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 13:53:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-24 13:53:44,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 273. [2023-12-24 13:53:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 257 states have (on average 1.1906614785992218) internal successors, (306), 257 states have internal predecessors, (306), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:53:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 330 transitions. [2023-12-24 13:53:44,150 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 330 transitions. Word has length 126 [2023-12-24 13:53:44,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:44,150 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 330 transitions. [2023-12-24 13:53:44,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 330 transitions. [2023-12-24 13:53:44,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 13:53:44,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:44,151 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:44,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-24 13:53:44,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:44,352 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:44,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash -172850170, now seen corresponding path program 1 times [2023-12-24 13:53:44,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:44,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403996379] [2023-12-24 13:53:44,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:44,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:44,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:44,354 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:44,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-24 13:53:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:44,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 13:53:44,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:45,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-12-24 13:53:45,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 33 [2023-12-24 13:53:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 13:53:45,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:45,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:45,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403996379] [2023-12-24 13:53:45,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403996379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:45,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:45,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-24 13:53:45,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707643628] [2023-12-24 13:53:45,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:45,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 13:53:45,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:45,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 13:53:45,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-24 13:53:45,840 INFO L87 Difference]: Start difference. First operand 273 states and 330 transitions. Second operand has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:48,320 INFO L93 Difference]: Finished difference Result 611 states and 744 transitions. [2023-12-24 13:53:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 13:53:48,321 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 126 [2023-12-24 13:53:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:48,322 INFO L225 Difference]: With dead ends: 611 [2023-12-24 13:53:48,322 INFO L226 Difference]: Without dead ends: 339 [2023-12-24 13:53:48,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2023-12-24 13:53:48,323 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 440 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:48,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 793 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-24 13:53:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-12-24 13:53:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 274. [2023-12-24 13:53:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 258 states have (on average 1.189922480620155) internal successors, (307), 258 states have internal predecessors, (307), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:53:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 331 transitions. [2023-12-24 13:53:48,343 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 331 transitions. Word has length 126 [2023-12-24 13:53:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:48,343 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 331 transitions. [2023-12-24 13:53:48,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:53:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 331 transitions. [2023-12-24 13:53:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 13:53:48,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:48,345 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:48,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-24 13:53:48,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:48,555 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:48,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1854915148, now seen corresponding path program 1 times [2023-12-24 13:53:48,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:48,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071531783] [2023-12-24 13:53:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:48,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:48,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:48,557 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:48,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-24 13:53:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:49,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 13:53:49,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:49,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 13:53:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:53:49,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:49,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:49,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071531783] [2023-12-24 13:53:49,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071531783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:49,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:49,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 13:53:49,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829358544] [2023-12-24 13:53:49,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:49,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 13:53:49,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:49,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 13:53:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 13:53:49,204 INFO L87 Difference]: Start difference. First operand 274 states and 331 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:50,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:50,288 INFO L93 Difference]: Finished difference Result 550 states and 664 transitions. [2023-12-24 13:53:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 13:53:50,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 126 [2023-12-24 13:53:50,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:50,292 INFO L225 Difference]: With dead ends: 550 [2023-12-24 13:53:50,292 INFO L226 Difference]: Without dead ends: 277 [2023-12-24 13:53:50,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 13:53:50,293 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 8 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:50,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 237 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 13:53:50,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-24 13:53:50,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 274. [2023-12-24 13:53:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 258 states have (on average 1.186046511627907) internal successors, (306), 258 states have internal predecessors, (306), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 13:53:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 330 transitions. [2023-12-24 13:53:50,310 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 330 transitions. Word has length 126 [2023-12-24 13:53:50,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:50,310 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 330 transitions. [2023-12-24 13:53:50,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:53:50,310 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 330 transitions. [2023-12-24 13:53:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 13:53:50,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:50,311 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:50,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-24 13:53:50,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:50,523 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:50,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:50,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1174856778, now seen corresponding path program 1 times [2023-12-24 13:53:50,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:50,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459280398] [2023-12-24 13:53:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:50,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:50,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:50,525 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:50,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-24 13:53:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:51,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 13:53:51,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:51,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:53:51,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2023-12-24 13:53:52,247 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:53:52,248 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 65 treesize of output 31 [2023-12-24 13:53:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 13:53:52,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:52,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:52,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459280398] [2023-12-24 13:53:52,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459280398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:52,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:52,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:53:52,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991102182] [2023-12-24 13:53:52,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:52,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:53:52,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:52,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:53:52,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:53:52,301 INFO L87 Difference]: Start difference. First operand 274 states and 330 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:53:52,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:52,676 INFO L93 Difference]: Finished difference Result 316 states and 383 transitions. [2023-12-24 13:53:52,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:53:52,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2023-12-24 13:53:52,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:52,678 INFO L225 Difference]: With dead ends: 316 [2023-12-24 13:53:52,678 INFO L226 Difference]: Without dead ends: 314 [2023-12-24 13:53:52,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:53:52,678 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 158 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:52,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 519 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 13:53:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-24 13:53:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2023-12-24 13:53:52,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 289 states have (on average 1.1868512110726643) internal successors, (343), 290 states have internal predecessors, (343), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 13:53:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 379 transitions. [2023-12-24 13:53:52,705 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 379 transitions. Word has length 126 [2023-12-24 13:53:52,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:52,705 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 379 transitions. [2023-12-24 13:53:52,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:53:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 379 transitions. [2023-12-24 13:53:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 13:53:52,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:52,706 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:52,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-24 13:53:52,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:52,929 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:52,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:52,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1174797196, now seen corresponding path program 1 times [2023-12-24 13:53:52,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:52,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040350911] [2023-12-24 13:53:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:52,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:52,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:52,931 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:52,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-24 13:53:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:53:54,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 13:53:54,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:53:54,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:53:54,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2023-12-24 13:53:54,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:53:54,688 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 62 treesize of output 32 [2023-12-24 13:53:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 13:53:54,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:53:54,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:53:54,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040350911] [2023-12-24 13:53:54,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040350911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:53:54,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:53:54,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:53:54,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995003461] [2023-12-24 13:53:54,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:53:54,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:53:54,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:53:54,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:53:54,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:53:54,739 INFO L87 Difference]: Start difference. First operand 312 states and 379 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:53:55,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:53:55,197 INFO L93 Difference]: Finished difference Result 600 states and 723 transitions. [2023-12-24 13:53:55,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:53:55,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2023-12-24 13:53:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:53:55,202 INFO L225 Difference]: With dead ends: 600 [2023-12-24 13:53:55,202 INFO L226 Difference]: Without dead ends: 321 [2023-12-24 13:53:55,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:53:55,203 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 175 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:53:55,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 480 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 13:53:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-24 13:53:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2023-12-24 13:53:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 294 states have (on average 1.1802721088435375) internal successors, (347), 295 states have internal predecessors, (347), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 13:53:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 387 transitions. [2023-12-24 13:53:55,236 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 387 transitions. Word has length 126 [2023-12-24 13:53:55,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:53:55,236 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 387 transitions. [2023-12-24 13:53:55,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:53:55,236 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 387 transitions. [2023-12-24 13:53:55,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 13:53:55,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:53:55,237 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:53:55,250 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 (41)] Forceful destruction successful, exit code 0 [2023-12-24 13:53:55,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:55,450 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:53:55,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:53:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1117538894, now seen corresponding path program 1 times [2023-12-24 13:53:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:53:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344093376] [2023-12-24 13:53:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:53:55,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:53:55,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:53:55,452 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:53:55,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process Received shutdown request... [2023-12-24 14:05:39,425 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 14:05:39,447 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 14:05:40,510 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 0 [2023-12-24 14:05:40,626 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forcibly destroying the process [2023-12-24 14:05:40,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-24 14:05:40,658 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 14:05:40,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:05:40,659 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 127 with TraceHistMax 12,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [344093376] and IpTcStrategyModuleCvc4 [449773003]. [2023-12-24 14:05:40,661 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:05:40,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 137 [2023-12-24 14:05:40,668 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 14:05:40,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 02:05:40 BoogieIcfgContainer [2023-12-24 14:05:40,673 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 14:05:40,674 INFO L158 Benchmark]: Toolchain (without parser) took 883132.60ms. Allocated memory was 267.4MB in the beginning and 320.9MB in the end (delta: 53.5MB). Free memory was 211.7MB in the beginning and 142.3MB in the end (delta: 69.4MB). Peak memory consumption was 124.0MB. Max. memory is 8.0GB. [2023-12-24 14:05:40,674 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 222.3MB. Free memory is still 169.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 14:05:40,674 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.75ms. Allocated memory is still 267.4MB. Free memory was 211.7MB in the beginning and 196.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 14:05:40,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.43ms. Allocated memory is still 267.4MB. Free memory was 196.0MB in the beginning and 192.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 14:05:40,674 INFO L158 Benchmark]: Boogie Preprocessor took 121.96ms. Allocated memory is still 267.4MB. Free memory was 192.3MB in the beginning and 186.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-24 14:05:40,674 INFO L158 Benchmark]: RCFGBuilder took 2643.96ms. Allocated memory is still 267.4MB. Free memory was 186.0MB in the beginning and 217.0MB in the end (delta: -31.0MB). Peak memory consumption was 42.4MB. Max. memory is 8.0GB. [2023-12-24 14:05:40,674 INFO L158 Benchmark]: TraceAbstraction took 880053.92ms. Allocated memory was 267.4MB in the beginning and 320.9MB in the end (delta: 53.5MB). Free memory was 215.9MB in the beginning and 142.3MB in the end (delta: 73.6MB). Peak memory consumption was 126.7MB. Max. memory is 8.0GB. [2023-12-24 14:05:40,675 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 222.3MB. Free memory is still 169.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 247.75ms. Allocated memory is still 267.4MB. Free memory was 211.7MB in the beginning and 196.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.43ms. Allocated memory is still 267.4MB. Free memory was 196.0MB in the beginning and 192.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 121.96ms. Allocated memory is still 267.4MB. Free memory was 192.3MB in the beginning and 186.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 2643.96ms. Allocated memory is still 267.4MB. Free memory was 186.0MB in the beginning and 217.0MB in the end (delta: -31.0MB). Peak memory consumption was 42.4MB. Max. memory is 8.0GB. * TraceAbstraction took 880053.92ms. Allocated memory was 267.4MB in the beginning and 320.9MB in the end (delta: 53.5MB). Free memory was 215.9MB in the beginning and 142.3MB in the end (delta: 73.6MB). Peak memory consumption was 126.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 127 with TraceHistMax 12,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [344093376] and IpTcStrategyModuleCvc4 [449773003]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 880.0s, OverallIterations: 41, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 112.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 9760 SdHoareTripleChecker+Valid, 88.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9469 mSDsluCounter, 40951 SdHoareTripleChecker+Invalid, 83.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34170 mSDsCounter, 579 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19379 IncrementalHoareTripleChecker+Invalid, 19959 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 579 mSolverCounterUnsat, 6781 mSDtfsCounter, 19379 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5771 GetRequests, 5142 SyntacticMatches, 0 SemanticMatches, 629 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 41.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=557occurred in iteration=32, InterpolantAutomatonStates: 584, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 40 MinimizatonAttempts, 4904 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 12.9s SatisfiabilityAnalysisTime, 35.2s InterpolantComputationTime, 4811 NumberOfCodeBlocks, 4811 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 5464 ConstructedInterpolants, 235 QuantifiedInterpolants, 28587 SizeOfPredicates, 451 NumberOfNonLiveVariables, 12132 ConjunctsInSsa, 567 ConjunctsInUnsatCore, 46 InterpolantComputations, 39 PerfectInterpolantSequences, 11959/12144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown