/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-ap_file-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 14:20:56,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 14:20:56,821 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 14:20:56,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 14:20:56,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 14:20:56,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 14:20:56,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 14:20:56,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 14:20:56,861 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 14:20:56,861 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 14:20:56,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 14:20:56,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 14:20:56,862 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 14:20:56,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 14:20:56,863 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 14:20:56,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 14:20:56,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 14:20:56,863 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 14:20:56,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 14:20:56,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 14:20:56,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 14:20:56,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 14:20:56,872 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 14:20:56,872 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 14:20:56,872 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 14:20:56,873 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 14:20:56,873 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 14:20:56,873 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 14:20:56,873 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 14:20:56,873 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 14:20:56,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 14:20:56,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 14:20:56,874 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 14:20:56,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 14:20:56,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:20:56,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 14:20:56,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 14:20:56,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 14:20:56,875 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 14:20:56,875 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 14:20:56,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 14:20:56,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 14:20:56,876 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 14:20:56,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 14:20:56,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 14:20:56,876 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 14:20:56,876 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 14:20:57,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 14:20:57,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 14:20:57,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 14:20:57,085 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 14:20:57,086 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 14:20:57,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-10.i [2023-12-24 14:20:58,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 14:20:58,298 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 14:20:58,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-10.i [2023-12-24 14:20:58,312 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f0326ac4/c8d49577bea4405486f4e0c2dc9bd43a/FLAG131b2a3f6 [2023-12-24 14:20:58,324 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f0326ac4/c8d49577bea4405486f4e0c2dc9bd43a [2023-12-24 14:20:58,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 14:20:58,327 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 14:20:58,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 14:20:58,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 14:20:58,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 14:20:58,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e80f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58, skipping insertion in model container [2023-12-24 14:20:58,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,358 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 14:20:58,467 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-ap_file-10.i[917,930] [2023-12-24 14:20:58,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:20:58,558 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 14:20:58,568 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-ap_file-10.i[917,930] [2023-12-24 14:20:58,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:20:58,651 INFO L206 MainTranslator]: Completed translation [2023-12-24 14:20:58,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58 WrapperNode [2023-12-24 14:20:58,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 14:20:58,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 14:20:58,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 14:20:58,653 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 14:20:58,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,745 INFO L138 Inliner]: procedures = 39, calls = 179, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 515 [2023-12-24 14:20:58,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 14:20:58,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 14:20:58,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 14:20:58,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 14:20:58,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,781 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,814 INFO L175 MemorySlicer]: Split 142 memory accesses to 8 slices as follows [2, 11, 36, 3, 48, 13, 11, 18]. 34 percent of accesses are in the largest equivalence class. The 20 initializations are split as follows [2, 2, 4, 1, 5, 2, 2, 2]. The 22 writes are split as follows [0, 2, 6, 1, 6, 3, 2, 2]. [2023-12-24 14:20:58,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 14:20:58,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 14:20:58,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 14:20:58,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 14:20:58,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (1/1) ... [2023-12-24 14:20:58,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:20:58,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 14:20:58,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 14:20:58,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 14:20:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 14:20:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 14:20:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 14:20:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 14:20:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 14:20:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 14:20:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 14:20:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 14:20:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2023-12-24 14:20:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 14:20:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 14:20:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 14:20:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 14:20:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 14:20:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 14:20:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 14:20:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2023-12-24 14:20:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 14:20:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 14:20:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 14:20:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 14:20:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 14:20:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 14:20:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 14:20:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 14:20:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 14:20:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 14:20:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 14:20:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 14:20:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 14:20:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 14:20:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 14:20:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 14:20:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 14:20:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 14:20:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 14:20:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 14:20:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 14:20:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 14:20:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 14:20:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 14:20:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 14:20:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 14:20:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 14:20:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 14:20:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 14:20:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 14:20:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 14:20:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 14:20:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 14:20:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 14:20:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 14:20:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 14:20:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 14:20:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 14:20:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 14:20:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-24 14:20:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 14:20:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 14:20:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 14:20:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 14:20:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 14:20:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 14:20:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 14:20:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2023-12-24 14:20:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 14:20:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 14:20:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 14:20:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 14:20:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 14:20:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 14:20:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 14:20:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 14:20:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 14:20:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 14:20:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 14:20:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 14:20:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 14:20:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 14:20:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 14:20:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 14:20:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 14:20:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 14:20:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 14:20:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 14:20:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 14:20:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 14:20:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 14:20:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-24 14:20:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 14:20:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 14:20:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 14:20:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 14:20:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 14:20:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 14:20:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 14:20:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-24 14:20:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 14:20:58,943 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 14:20:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 14:20:58,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 14:20:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 14:20:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 14:20:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 14:20:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 14:20:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 14:20:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 14:20:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 14:20:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 14:20:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 14:20:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 14:20:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 14:20:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 14:20:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 14:20:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 14:20:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 14:20:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 14:20:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 14:20:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 14:20:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 14:20:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 14:20:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 14:20:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 14:20:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 14:20:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 14:20:59,179 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 14:20:59,181 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 14:21:00,593 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 14:21:00,664 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 14:21:00,664 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 14:21:00,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:21:00 BoogieIcfgContainer [2023-12-24 14:21:00,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 14:21:00,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 14:21:00,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 14:21:00,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 14:21:00,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 02:20:58" (1/3) ... [2023-12-24 14:21:00,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb601b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:21:00, skipping insertion in model container [2023-12-24 14:21:00,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:58" (2/3) ... [2023-12-24 14:21:00,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb601b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:21:00, skipping insertion in model container [2023-12-24 14:21:00,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:21:00" (3/3) ... [2023-12-24 14:21:00,672 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-10.i [2023-12-24 14:21:00,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 14:21:00,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 14:21:00,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 14:21:00,741 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;@5797bf78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 14:21:00,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 14:21:00,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 82 states have (on average 1.4146341463414633) internal successors, (116), 83 states have internal predecessors, (116), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:00,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 14:21:00,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:00,765 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:00,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:00,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2087601026, now seen corresponding path program 1 times [2023-12-24 14:21:00,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:00,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74960855] [2023-12-24 14:21:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:00,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:00,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:00,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:00,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 14:21:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:01,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 14:21:01,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-24 14:21:01,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:01,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:01,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74960855] [2023-12-24 14:21:01,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74960855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:01,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:01,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 14:21:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89184002] [2023-12-24 14:21:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:01,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 14:21:01,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:01,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 14:21:01,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 14:21:01,334 INFO L87 Difference]: Start difference. First operand has 104 states, 82 states have (on average 1.4146341463414633) internal successors, (116), 83 states have internal predecessors, (116), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:21:01,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:01,557 INFO L93 Difference]: Finished difference Result 205 states and 325 transitions. [2023-12-24 14:21:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 14:21:01,559 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2023-12-24 14:21:01,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:01,565 INFO L225 Difference]: With dead ends: 205 [2023-12-24 14:21:01,565 INFO L226 Difference]: Without dead ends: 102 [2023-12-24 14:21:01,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 14:21:01,573 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:01,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:21:01,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-24 14:21:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-24 14:21:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.345679012345679) internal successors, (109), 81 states have internal predecessors, (109), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 147 transitions. [2023-12-24 14:21:01,625 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 147 transitions. Word has length 147 [2023-12-24 14:21:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:01,625 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 147 transitions. [2023-12-24 14:21:01,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:21:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 147 transitions. [2023-12-24 14:21:01,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 14:21:01,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:01,635 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:01,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:01,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:01,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:01,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:01,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1428128920, now seen corresponding path program 1 times [2023-12-24 14:21:01,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:01,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572965324] [2023-12-24 14:21:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:01,851 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 14:21:01,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:01,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:01,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 14:21:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:02,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 14:21:02,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-24 14:21:02,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:02,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:02,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572965324] [2023-12-24 14:21:02,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572965324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:02,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:02,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 14:21:02,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525512898] [2023-12-24 14:21:02,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:02,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 14:21:02,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:02,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 14:21:02,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 14:21:02,339 INFO L87 Difference]: Start difference. First operand 102 states and 147 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:21:02,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:02,555 INFO L93 Difference]: Finished difference Result 209 states and 302 transitions. [2023-12-24 14:21:02,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:21:02,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2023-12-24 14:21:02,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:02,557 INFO L225 Difference]: With dead ends: 209 [2023-12-24 14:21:02,558 INFO L226 Difference]: Without dead ends: 108 [2023-12-24 14:21:02,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:21:02,559 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 10 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:02,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 421 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:21:02,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-24 14:21:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2023-12-24 14:21:02,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 83 states have (on average 1.3373493975903614) internal successors, (111), 83 states have internal predecessors, (111), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 149 transitions. [2023-12-24 14:21:02,573 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 149 transitions. Word has length 147 [2023-12-24 14:21:02,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:02,573 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 149 transitions. [2023-12-24 14:21:02,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:21:02,574 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 149 transitions. [2023-12-24 14:21:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 14:21:02,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:02,575 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:02,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-24 14:21:02,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:02,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:02,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:02,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1791595418, now seen corresponding path program 1 times [2023-12-24 14:21:02,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:02,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484903262] [2023-12-24 14:21:02,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:02,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:02,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:02,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:02,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 14:21:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:03,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 14:21:03,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:03,273 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:03,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:03,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:03,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484903262] [2023-12-24 14:21:03,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484903262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:03,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:03,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 14:21:03,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817914033] [2023-12-24 14:21:03,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:03,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:21:03,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:03,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:21:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:21:03,278 INFO L87 Difference]: Start difference. First operand 104 states and 149 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:03,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:03,642 INFO L93 Difference]: Finished difference Result 239 states and 343 transitions. [2023-12-24 14:21:03,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:21:03,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-24 14:21:03,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:03,645 INFO L225 Difference]: With dead ends: 239 [2023-12-24 14:21:03,645 INFO L226 Difference]: Without dead ends: 136 [2023-12-24 14:21:03,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:21:03,647 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 83 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:03,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 677 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:21:03,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-24 14:21:03,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2023-12-24 14:21:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 89 states have (on average 1.3146067415730338) internal successors, (117), 89 states have internal predecessors, (117), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 155 transitions. [2023-12-24 14:21:03,658 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 155 transitions. Word has length 147 [2023-12-24 14:21:03,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:03,658 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 155 transitions. [2023-12-24 14:21:03,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 155 transitions. [2023-12-24 14:21:03,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 14:21:03,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:03,660 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:03,675 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 (4)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:03,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:03,871 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:03,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1694025252, now seen corresponding path program 1 times [2023-12-24 14:21:03,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:03,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900837556] [2023-12-24 14:21:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:03,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:03,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:03,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:03,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 14:21:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:04,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 14:21:04,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:04,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:04,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:04,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900837556] [2023-12-24 14:21:04,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900837556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:04,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:04,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 14:21:04,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786500965] [2023-12-24 14:21:04,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:04,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:21:04,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:04,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:21:04,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:21:04,233 INFO L87 Difference]: Start difference. First operand 110 states and 155 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:04,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:04,714 INFO L93 Difference]: Finished difference Result 248 states and 347 transitions. [2023-12-24 14:21:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 14:21:04,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-24 14:21:04,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:04,716 INFO L225 Difference]: With dead ends: 248 [2023-12-24 14:21:04,716 INFO L226 Difference]: Without dead ends: 139 [2023-12-24 14:21:04,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-24 14:21:04,717 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 85 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:04,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 804 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:21:04,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-24 14:21:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2023-12-24 14:21:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 91 states have (on average 1.3076923076923077) internal successors, (119), 91 states have internal predecessors, (119), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 157 transitions. [2023-12-24 14:21:04,726 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 157 transitions. Word has length 147 [2023-12-24 14:21:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:04,726 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 157 transitions. [2023-12-24 14:21:04,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 157 transitions. [2023-12-24 14:21:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 14:21:04,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:04,728 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:04,738 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 14:21:04,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:04,938 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:04,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:04,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1751283554, now seen corresponding path program 1 times [2023-12-24 14:21:04,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:04,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48527248] [2023-12-24 14:21:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:04,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:04,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:04,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:04,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 14:21:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:05,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 14:21:05,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:05,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:05,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:05,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48527248] [2023-12-24 14:21:05,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48527248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:05,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:05,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 14:21:05,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119682314] [2023-12-24 14:21:05,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:05,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:21:05,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:05,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:21:05,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-24 14:21:05,315 INFO L87 Difference]: Start difference. First operand 112 states and 157 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:05,739 INFO L93 Difference]: Finished difference Result 251 states and 346 transitions. [2023-12-24 14:21:05,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 14:21:05,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-24 14:21:05,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:05,742 INFO L225 Difference]: With dead ends: 251 [2023-12-24 14:21:05,742 INFO L226 Difference]: Without dead ends: 140 [2023-12-24 14:21:05,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2023-12-24 14:21:05,744 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 71 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:05,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 926 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:21:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-24 14:21:05,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2023-12-24 14:21:05,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 93 states have (on average 1.3010752688172043) internal successors, (121), 93 states have internal predecessors, (121), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 159 transitions. [2023-12-24 14:21:05,751 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 159 transitions. Word has length 147 [2023-12-24 14:21:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:05,752 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 159 transitions. [2023-12-24 14:21:05,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:05,752 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 159 transitions. [2023-12-24 14:21:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 14:21:05,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:05,754 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:05,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:05,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:05,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:05,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:05,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1751343136, now seen corresponding path program 1 times [2023-12-24 14:21:05,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:05,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228522388] [2023-12-24 14:21:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:05,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:05,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:05,971 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:05,971 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 (7)] Waiting until timeout for monitored process [2023-12-24 14:21:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:06,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 14:21:06,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:06,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:06,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 65 [2023-12-24 14:21:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2023-12-24 14:21:06,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:06,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:06,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228522388] [2023-12-24 14:21:06,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228522388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:06,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:06,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:21:06,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629032335] [2023-12-24 14:21:06,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:06,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:21:06,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:06,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:21:06,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:21:06,524 INFO L87 Difference]: Start difference. First operand 114 states and 159 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:21:07,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:07,720 INFO L93 Difference]: Finished difference Result 233 states and 326 transitions. [2023-12-24 14:21:07,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 14:21:07,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2023-12-24 14:21:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:07,725 INFO L225 Difference]: With dead ends: 233 [2023-12-24 14:21:07,725 INFO L226 Difference]: Without dead ends: 120 [2023-12-24 14:21:07,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:21:07,726 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 142 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:07,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 442 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 14:21:07,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-24 14:21:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2023-12-24 14:21:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 93 states have internal predecessors, (120), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 158 transitions. [2023-12-24 14:21:07,734 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 158 transitions. Word has length 147 [2023-12-24 14:21:07,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:07,734 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 158 transitions. [2023-12-24 14:21:07,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:21:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 158 transitions. [2023-12-24 14:21:07,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 14:21:07,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:07,736 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:07,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:07,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:07,946 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:07,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1867403110, now seen corresponding path program 1 times [2023-12-24 14:21:07,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:07,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134214919] [2023-12-24 14:21:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:07,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:07,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:07,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:07,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 14:21:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:08,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 14:21:08,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:08,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:08,432 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 14:21:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-24 14:21:08,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:08,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:08,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134214919] [2023-12-24 14:21:08,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134214919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:08,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:08,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:21:08,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678203227] [2023-12-24 14:21:08,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:08,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:21:08,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:08,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:21:08,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:21:08,456 INFO L87 Difference]: Start difference. First operand 114 states and 158 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, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:21:09,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:09,549 INFO L93 Difference]: Finished difference Result 233 states and 324 transitions. [2023-12-24 14:21:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 14:21:09,554 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, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 149 [2023-12-24 14:21:09,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:09,555 INFO L225 Difference]: With dead ends: 233 [2023-12-24 14:21:09,555 INFO L226 Difference]: Without dead ends: 120 [2023-12-24 14:21:09,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:21:09,557 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 133 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:09,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 436 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 14:21:09,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-24 14:21:09,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2023-12-24 14:21:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 93 states have (on average 1.2795698924731183) internal successors, (119), 93 states have internal predecessors, (119), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 157 transitions. [2023-12-24 14:21:09,563 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 157 transitions. Word has length 149 [2023-12-24 14:21:09,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:09,563 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 157 transitions. [2023-12-24 14:21:09,563 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, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:21:09,563 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 157 transitions. [2023-12-24 14:21:09,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 14:21:09,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:09,565 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:09,577 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 14:21:09,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:09,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:09,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:09,775 INFO L85 PathProgramCache]: Analyzing trace with hash -895995808, now seen corresponding path program 1 times [2023-12-24 14:21:09,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:09,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383750716] [2023-12-24 14:21:09,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:09,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:09,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:09,777 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:09,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 14:21:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:10,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 14:21:10,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:11,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-12-24 14:21:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:11,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:11,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:11,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383750716] [2023-12-24 14:21:11,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383750716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:11,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:11,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 14:21:11,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021762649] [2023-12-24 14:21:11,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:11,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:21:11,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:11,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:21:11,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:21:11,282 INFO L87 Difference]: Start difference. First operand 114 states and 157 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:11,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:11,590 INFO L93 Difference]: Finished difference Result 273 states and 378 transitions. [2023-12-24 14:21:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:21:11,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 151 [2023-12-24 14:21:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:11,591 INFO L225 Difference]: With dead ends: 273 [2023-12-24 14:21:11,592 INFO L226 Difference]: Without dead ends: 160 [2023-12-24 14:21:11,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:21:11,593 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 132 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:11,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 434 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:21:11,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-24 14:21:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2023-12-24 14:21:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 124 states have (on average 1.2580645161290323) internal successors, (156), 125 states have internal predecessors, (156), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 14:21:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 220 transitions. [2023-12-24 14:21:11,605 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 220 transitions. Word has length 151 [2023-12-24 14:21:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:11,606 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 220 transitions. [2023-12-24 14:21:11,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:11,606 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 220 transitions. [2023-12-24 14:21:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 14:21:11,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:11,608 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:11,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:11,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:11,820 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:11,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1397515259, now seen corresponding path program 1 times [2023-12-24 14:21:11,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:11,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427186500] [2023-12-24 14:21:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:11,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:11,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:11,822 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:11,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 14:21:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:12,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:21:12,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:12,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 14:21:12,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 14:21:12,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:12,406 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 125 treesize of output 55 [2023-12-24 14:21:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:12,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:12,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:12,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427186500] [2023-12-24 14:21:12,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427186500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:12,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:12,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 14:21:12,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806785400] [2023-12-24 14:21:12,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:12,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:21:12,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:12,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:21:12,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:21:12,454 INFO L87 Difference]: Start difference. First operand 159 states and 220 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:14,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:14,198 INFO L93 Difference]: Finished difference Result 350 states and 473 transitions. [2023-12-24 14:21:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 14:21:14,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2023-12-24 14:21:14,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:14,203 INFO L225 Difference]: With dead ends: 350 [2023-12-24 14:21:14,203 INFO L226 Difference]: Without dead ends: 235 [2023-12-24 14:21:14,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:21:14,204 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 154 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:14,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 769 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 2 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 14:21:14,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-24 14:21:14,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 207. [2023-12-24 14:21:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 169 states have (on average 1.2603550295857988) internal successors, (213), 171 states have internal predecessors, (213), 34 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 14:21:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 281 transitions. [2023-12-24 14:21:14,223 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 281 transitions. Word has length 153 [2023-12-24 14:21:14,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:14,223 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 281 transitions. [2023-12-24 14:21:14,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 281 transitions. [2023-12-24 14:21:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 14:21:14,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:14,225 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:14,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:14,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:14,437 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:14,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:14,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2022958793, now seen corresponding path program 1 times [2023-12-24 14:21:14,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:14,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163554545] [2023-12-24 14:21:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:14,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:14,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:14,439 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:14,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 14:21:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:14,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 14:21:14,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:15,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:15,024 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 26 treesize of output 31 [2023-12-24 14:21:15,029 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 18 treesize of output 14 [2023-12-24 14:21:15,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-24 14:21:15,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-24 14:21:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:15,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:15,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:15,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163554545] [2023-12-24 14:21:15,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163554545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:15,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:15,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 14:21:15,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451878042] [2023-12-24 14:21:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:15,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:21:15,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:15,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:21:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:21:15,173 INFO L87 Difference]: Start difference. First operand 207 states and 281 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:16,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:16,025 INFO L93 Difference]: Finished difference Result 550 states and 734 transitions. [2023-12-24 14:21:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:21:16,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 154 [2023-12-24 14:21:16,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:16,028 INFO L225 Difference]: With dead ends: 550 [2023-12-24 14:21:16,028 INFO L226 Difference]: Without dead ends: 387 [2023-12-24 14:21:16,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:21:16,029 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 234 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:16,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 680 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 14:21:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-12-24 14:21:16,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 381. [2023-12-24 14:21:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 317 states have (on average 1.2618296529968454) internal successors, (400), 321 states have internal predecessors, (400), 56 states have call successors, (56), 7 states have call predecessors, (56), 7 states have return successors, (56), 52 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 14:21:16,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 512 transitions. [2023-12-24 14:21:16,056 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 512 transitions. Word has length 154 [2023-12-24 14:21:16,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:16,056 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 512 transitions. [2023-12-24 14:21:16,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:16,057 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 512 transitions. [2023-12-24 14:21:16,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 14:21:16,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:16,058 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:16,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:16,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:16,272 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:16,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash 257938795, now seen corresponding path program 1 times [2023-12-24 14:21:16,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:16,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677686533] [2023-12-24 14:21:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:16,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:16,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:16,274 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:16,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 14:21:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:16,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 14:21:16,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:16,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:16,753 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 26 treesize of output 31 [2023-12-24 14:21:16,757 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 18 treesize of output 14 [2023-12-24 14:21:16,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 14:21:16,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 14:21:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:16,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:16,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677686533] [2023-12-24 14:21:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677686533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:16,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:16,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 14:21:16,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951116206] [2023-12-24 14:21:16,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:16,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:21:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:21:16,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:21:16,910 INFO L87 Difference]: Start difference. First operand 381 states and 512 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:17,912 INFO L93 Difference]: Finished difference Result 713 states and 952 transitions. [2023-12-24 14:21:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:21:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 155 [2023-12-24 14:21:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:17,916 INFO L225 Difference]: With dead ends: 713 [2023-12-24 14:21:17,916 INFO L226 Difference]: Without dead ends: 380 [2023-12-24 14:21:17,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:21:17,917 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 249 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:17,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 736 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 14:21:17,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-24 14:21:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 374. [2023-12-24 14:21:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 310 states have (on average 1.2580645161290323) internal successors, (390), 314 states have internal predecessors, (390), 56 states have call successors, (56), 7 states have call predecessors, (56), 7 states have return successors, (56), 52 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 14:21:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2023-12-24 14:21:17,947 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 155 [2023-12-24 14:21:17,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:17,947 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2023-12-24 14:21:17,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2023-12-24 14:21:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 14:21:17,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:17,949 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:17,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:18,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:18,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:18,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1683521327, now seen corresponding path program 1 times [2023-12-24 14:21:18,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:18,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096637737] [2023-12-24 14:21:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:18,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:18,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:18,165 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:18,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 14:21:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:19,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 14:21:19,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:19,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:21:19,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 71 [2023-12-24 14:21:22,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 77 [2023-12-24 14:21:27,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 114 [2023-12-24 14:21:27,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:27,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 326 treesize of output 142 [2023-12-24 14:21:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 4 proven. 256 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 14:21:27,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:21:28,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:28,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096637737] [2023-12-24 14:21:28,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096637737] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:21:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [863845961] [2023-12-24 14:21:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:28,518 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:21:28,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:21:28,557 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:21:28,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-24 14:21:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:30,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 14:21:30,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:31,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 14:21:37,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 63 [2023-12-24 14:21:43,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 71 [2023-12-24 14:21:52,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 111 [2023-12-24 14:21:58,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 334 treesize of output 146 [2023-12-24 14:21:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2023-12-24 14:21:58,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:22:02,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [863845961] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:22:02,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:22:02,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 20 [2023-12-24 14:22:02,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537144834] [2023-12-24 14:22:02,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:22:02,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-24 14:22:02,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:22:02,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-24 14:22:02,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=513, Unknown=8, NotChecked=0, Total=600 [2023-12-24 14:22:02,547 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 21 states, 21 states have (on average 6.095238095238095) internal successors, (128), 20 states have internal predecessors, (128), 7 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) [2023-12-24 14:22:06,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:10,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:13,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:28,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:30,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:32,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:36,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:39,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:42,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:45,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:48,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:52,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:56,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:00,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:04,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:08,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:12,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:16,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:20,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:39,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:43,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:47,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:51,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:55,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:23:59,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:24:03,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:24:06,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:24:11,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:24:15,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:24:19,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:24:23,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:24:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:24:34,589 INFO L93 Difference]: Finished difference Result 1125 states and 1482 transitions. [2023-12-24 14:24:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 14:24:34,591 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.095238095238095) internal successors, (128), 20 states have internal predecessors, (128), 7 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) Word has length 156 [2023-12-24 14:24:34,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:24:34,595 INFO L225 Difference]: With dead ends: 1125 [2023-12-24 14:24:34,595 INFO L226 Difference]: Without dead ends: 799 [2023-12-24 14:24:34,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 60.0s TimeCoverageRelationStatistics Valid=290, Invalid=1176, Unknown=16, NotChecked=0, Total=1482 [2023-12-24 14:24:34,597 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1091 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 248 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:24:34,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 1424 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 795 Invalid, 31 Unknown, 0 Unchecked, 122.7s Time] [2023-12-24 14:24:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-24 14:24:34,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 579. [2023-12-24 14:24:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 465 states have (on average 1.2408602150537635) internal successors, (577), 472 states have internal predecessors, (577), 95 states have call successors, (95), 18 states have call predecessors, (95), 18 states have return successors, (95), 88 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-24 14:24:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 767 transitions. [2023-12-24 14:24:34,671 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 767 transitions. Word has length 156 [2023-12-24 14:24:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:24:34,681 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 767 transitions. [2023-12-24 14:24:34,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.095238095238095) internal successors, (128), 20 states have internal predecessors, (128), 7 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) [2023-12-24 14:24:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 767 transitions. [2023-12-24 14:24:34,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 14:24:34,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:24:34,683 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:24:34,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-24 14:24:34,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 14:24:35,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:24:35,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:24:35,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:24:35,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1892882611, now seen corresponding path program 1 times [2023-12-24 14:24:35,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:24:35,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946598610] [2023-12-24 14:24:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:24:35,105 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 14:24:35,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:24:35,106 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:24:35,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 14:24:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:24:35,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 14:24:35,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:24:36,190 INFO L349 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2023-12-24 14:24:36,190 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 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-24 14:24:36,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 14:24:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 17 proven. 123 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 14:24:36,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:24:36,811 INFO L349 Elim1Store]: treesize reduction 4, result has 69.2 percent of original size [2023-12-24 14:24:36,811 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 34 treesize of output 27 [2023-12-24 14:24:36,818 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 3 proven. 102 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2023-12-24 14:24:36,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:24:36,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946598610] [2023-12-24 14:24:36,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946598610] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:24:36,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:24:36,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-12-24 14:24:36,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070702136] [2023-12-24 14:24:36,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:24:36,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 14:24:36,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:24:36,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 14:24:36,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-12-24 14:24:36,821 INFO L87 Difference]: Start difference. First operand 579 states and 767 transitions. Second operand has 23 states, 19 states have (on average 6.157894736842105) internal successors, (117), 21 states have internal predecessors, (117), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-24 14:24:44,976 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 14:24:53,040 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 14:25:01,097 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 14:25:09,160 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 14:25:17,321 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 14:25:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:25:18,575 INFO L93 Difference]: Finished difference Result 921 states and 1200 transitions. [2023-12-24 14:25:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 14:25:18,576 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 6.157894736842105) internal successors, (117), 21 states have internal predecessors, (117), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) Word has length 156 [2023-12-24 14:25:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:25:18,578 INFO L225 Difference]: With dead ends: 921 [2023-12-24 14:25:18,578 INFO L226 Difference]: Without dead ends: 433 [2023-12-24 14:25:18,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 14:25:18,580 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 456 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:25:18,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 881 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 14:25:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-12-24 14:25:18,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 309. [2023-12-24 14:25:18,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 232 states have (on average 1.1896551724137931) internal successors, (276), 234 states have internal predecessors, (276), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 14:25:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 396 transitions. [2023-12-24 14:25:18,639 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 396 transitions. Word has length 156 [2023-12-24 14:25:18,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:25:18,639 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 396 transitions. [2023-12-24 14:25:18,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 6.157894736842105) internal successors, (117), 21 states have internal predecessors, (117), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-24 14:25:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 396 transitions. [2023-12-24 14:25:18,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:25:18,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:25:18,643 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:18,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 14:25:18,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:25:18,857 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:25:18,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:25:18,857 INFO L85 PathProgramCache]: Analyzing trace with hash -354822962, now seen corresponding path program 1 times [2023-12-24 14:25:18,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:25:18,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839867589] [2023-12-24 14:25:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:25:18,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:25:18,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:25:18,860 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:25:18,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 14:25:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:25:19,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-24 14:25:19,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:25:21,766 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 14:25:22,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 14:25:23,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 14:25:25,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:25:26,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 14:25:26,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:25:28,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2023-12-24 14:25:29,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:25:29,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 51 [2023-12-24 14:25:30,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:25:30,139 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 40 [2023-12-24 14:25:30,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:25:30,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 14:25:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 155 proven. 411 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-12-24 14:25:30,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:25:31,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:25:31,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839867589] [2023-12-24 14:25:31,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839867589] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:25:31,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [478710044] [2023-12-24 14:25:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:25:31,464 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:25:31,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:25:31,469 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:25:31,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-24 14:25:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:25:33,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-24 14:25:33,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:25:36,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:25:37,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 14:25:38,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 14:25:40,586 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 14:25:42,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-12-24 14:25:44,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2023-12-24 14:25:45,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 69 [2023-12-24 14:25:46,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 47 [2023-12-24 14:25:46,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 38 [2023-12-24 14:25:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 164 proven. 411 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-24 14:25:46,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:25:46,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [478710044] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:25:46,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:25:46,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2023-12-24 14:25:46,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642077970] [2023-12-24 14:25:46,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:25:46,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-24 14:25:46,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:25:46,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-24 14:25:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=2294, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 14:25:46,727 INFO L87 Difference]: Start difference. First operand 309 states and 396 transitions. Second operand has 45 states, 39 states have (on average 4.102564102564102) internal successors, (160), 38 states have internal predecessors, (160), 17 states have call successors, (38), 15 states have call predecessors, (38), 17 states have return successors, (38), 13 states have call predecessors, (38), 17 states have call successors, (38) [2023-12-24 14:26:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:26:01,750 INFO L93 Difference]: Finished difference Result 748 states and 898 transitions. [2023-12-24 14:26:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-24 14:26:01,752 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 4.102564102564102) internal successors, (160), 38 states have internal predecessors, (160), 17 states have call successors, (38), 15 states have call predecessors, (38), 17 states have return successors, (38), 13 states have call predecessors, (38), 17 states have call successors, (38) Word has length 157 [2023-12-24 14:26:01,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:26:01,754 INFO L225 Difference]: With dead ends: 748 [2023-12-24 14:26:01,754 INFO L226 Difference]: Without dead ends: 538 [2023-12-24 14:26:01,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=1277, Invalid=6379, Unknown=0, NotChecked=0, Total=7656 [2023-12-24 14:26:01,757 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 1843 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:26:01,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 2332 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-24 14:26:01,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-24 14:26:01,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 427. [2023-12-24 14:26:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 328 states have (on average 1.1554878048780488) internal successors, (379), 330 states have internal predecessors, (379), 60 states have call successors, (60), 38 states have call predecessors, (60), 38 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 14:26:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 499 transitions. [2023-12-24 14:26:01,871 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 499 transitions. Word has length 157 [2023-12-24 14:26:01,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:26:01,871 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 499 transitions. [2023-12-24 14:26:01,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 4.102564102564102) internal successors, (160), 38 states have internal predecessors, (160), 17 states have call successors, (38), 15 states have call predecessors, (38), 17 states have return successors, (38), 13 states have call predecessors, (38), 17 states have call successors, (38) [2023-12-24 14:26:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 499 transitions. [2023-12-24 14:26:01,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:26:01,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:26:01,873 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:26:01,886 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 (16)] Forceful destruction successful, exit code 0 [2023-12-24 14:26:02,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-24 14:26:02,290 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=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:26:02,290 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:26:02,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:26:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1727521335, now seen corresponding path program 1 times [2023-12-24 14:26:02,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:26:02,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258542763] [2023-12-24 14:26:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:26:02,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:26:02,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:26:02,292 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:26:02,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 14:26:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:26:02,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 14:26:02,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:26:03,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:26:04,075 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 14:26:04,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 14:26:05,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 39 [2023-12-24 14:26:05,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 53 [2023-12-24 14:26:06,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:26:06,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 14:26:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 56 proven. 360 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-24 14:26:06,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:26:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:26:06,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:26:06,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258542763] [2023-12-24 14:26:06,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258542763] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:26:06,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:26:06,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2023-12-24 14:26:06,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280698070] [2023-12-24 14:26:06,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:26:06,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:26:06,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:26:06,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:26:06,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-12-24 14:26:06,385 INFO L87 Difference]: Start difference. First operand 427 states and 499 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:26:07,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:26:07,240 INFO L93 Difference]: Finished difference Result 877 states and 1031 transitions. [2023-12-24 14:26:07,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 14:26:07,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 157 [2023-12-24 14:26:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:26:07,243 INFO L225 Difference]: With dead ends: 877 [2023-12-24 14:26:07,243 INFO L226 Difference]: Without dead ends: 581 [2023-12-24 14:26:07,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-12-24 14:26:07,245 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 206 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:26:07,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1217 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 14:26:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-12-24 14:26:07,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 464. [2023-12-24 14:26:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 365 states have (on average 1.1616438356164382) internal successors, (424), 367 states have internal predecessors, (424), 60 states have call successors, (60), 38 states have call predecessors, (60), 38 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 14:26:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 544 transitions. [2023-12-24 14:26:07,361 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 544 transitions. Word has length 157 [2023-12-24 14:26:07,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:26:07,362 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 544 transitions. [2023-12-24 14:26:07,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:26:07,362 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 544 transitions. [2023-12-24 14:26:07,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:26:07,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:26:07,363 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:26:07,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-24 14:26:07,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:26:07,563 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:26:07,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:26:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash 716404085, now seen corresponding path program 1 times [2023-12-24 14:26:07,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:26:07,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331887092] [2023-12-24 14:26:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:26:07,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:26:07,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:26:07,566 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:26:07,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 14:26:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:26:08,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 14:26:08,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:26:09,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:26:10,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 14:26:10,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 14:26:12,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2023-12-24 14:26:12,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2023-12-24 14:26:12,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:26:12,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 26 [2023-12-24 14:26:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 87 proven. 396 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-24 14:26:12,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:26:13,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:26:13,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331887092] [2023-12-24 14:26:13,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331887092] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:26:13,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1405601459] [2023-12-24 14:26:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:26:13,755 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:26:13,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:26:13,756 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:26:13,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-24 14:26:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:26:15,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 14:26:15,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:26:16,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:26:17,021 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 14:26:17,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 14:26:19,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2023-12-24 14:26:20,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 54 [2023-12-24 14:26:20,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 14:26:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 65 proven. 387 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 14:26:20,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:26:21,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1405601459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:26:21,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:26:21,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 28 [2023-12-24 14:26:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345041038] [2023-12-24 14:26:21,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:26:21,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 14:26:21,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:26:21,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 14:26:21,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 14:26:21,104 INFO L87 Difference]: Start difference. First operand 464 states and 544 transitions. Second operand has 29 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 26 states have internal predecessors, (138), 9 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (38), 6 states have call predecessors, (38), 9 states have call successors, (38) [2023-12-24 14:26:28,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:26:28,075 INFO L93 Difference]: Finished difference Result 917 states and 1069 transitions. [2023-12-24 14:26:28,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 14:26:28,077 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 26 states have internal predecessors, (138), 9 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (38), 6 states have call predecessors, (38), 9 states have call successors, (38) Word has length 157 [2023-12-24 14:26:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:26:28,078 INFO L225 Difference]: With dead ends: 917 [2023-12-24 14:26:28,078 INFO L226 Difference]: Without dead ends: 584 [2023-12-24 14:26:28,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=621, Invalid=2685, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 14:26:28,080 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1178 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:26:28,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 2354 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-24 14:26:28,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-24 14:26:28,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 480. [2023-12-24 14:26:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 377 states have (on average 1.1538461538461537) internal successors, (435), 379 states have internal predecessors, (435), 60 states have call successors, (60), 42 states have call predecessors, (60), 42 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 14:26:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 555 transitions. [2023-12-24 14:26:28,221 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 555 transitions. Word has length 157 [2023-12-24 14:26:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:26:28,221 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 555 transitions. [2023-12-24 14:26:28,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 26 states have internal predecessors, (138), 9 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (38), 6 states have call predecessors, (38), 9 states have call successors, (38) [2023-12-24 14:26:28,221 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 555 transitions. [2023-12-24 14:26:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:26:28,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:26:28,222 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:26:28,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2023-12-24 14:26:28,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 14:26:28,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:26:28,638 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:26:28,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:26:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash -644217927, now seen corresponding path program 1 times [2023-12-24 14:26:28,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:26:28,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217529527] [2023-12-24 14:26:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:26:28,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:26:28,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:26:28,640 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:26:28,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 14:26:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:26:29,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 14:26:29,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:26:30,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:26:30,752 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 14:26:31,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 14:26:33,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2023-12-24 14:26:33,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2023-12-24 14:26:33,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:26:33,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 35 [2023-12-24 14:26:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 65 proven. 387 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 14:26:33,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:26:34,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:26:34,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217529527] [2023-12-24 14:26:34,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217529527] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:26:34,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1096169725] [2023-12-24 14:26:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:26:34,671 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:26:34,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:26:34,672 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:26:34,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-24 14:26:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:26:36,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 14:26:36,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:26:37,706 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 14:26:38,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 14:26:38,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 14:26:40,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2023-12-24 14:26:41,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 44 [2023-12-24 14:26:41,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 31 [2023-12-24 14:26:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 89 proven. 387 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-24 14:26:41,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:26:41,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1096169725] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:26:41,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:26:41,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-24 14:26:41,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089225758] [2023-12-24 14:26:41,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:26:41,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 14:26:41,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:26:41,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 14:26:41,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-12-24 14:26:41,655 INFO L87 Difference]: Start difference. First operand 480 states and 555 transitions. Second operand has 25 states, 23 states have (on average 5.826086956521739) internal successors, (134), 22 states have internal predecessors, (134), 8 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 6 states have call predecessors, (38), 8 states have call successors, (38) [2023-12-24 14:26:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:26:47,250 INFO L93 Difference]: Finished difference Result 932 states and 1082 transitions. [2023-12-24 14:26:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 14:26:47,252 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.826086956521739) internal successors, (134), 22 states have internal predecessors, (134), 8 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 6 states have call predecessors, (38), 8 states have call successors, (38) Word has length 157 [2023-12-24 14:26:47,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:26:47,254 INFO L225 Difference]: With dead ends: 932 [2023-12-24 14:26:47,254 INFO L226 Difference]: Without dead ends: 591 [2023-12-24 14:26:47,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=500, Invalid=1852, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 14:26:47,256 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1187 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:26:47,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 1527 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-24 14:26:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2023-12-24 14:26:47,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 481. [2023-12-24 14:26:47,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 378 states have (on average 1.1534391534391535) internal successors, (436), 380 states have internal predecessors, (436), 60 states have call successors, (60), 42 states have call predecessors, (60), 42 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 14:26:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 556 transitions. [2023-12-24 14:26:47,405 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 556 transitions. Word has length 157 [2023-12-24 14:26:47,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:26:47,406 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 556 transitions. [2023-12-24 14:26:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.826086956521739) internal successors, (134), 22 states have internal predecessors, (134), 8 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 6 states have call predecessors, (38), 8 states have call successors, (38) [2023-12-24 14:26:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 556 transitions. [2023-12-24 14:26:47,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:26:47,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:26:47,408 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:26:47,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-12-24 14:26:47,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 14:26:47,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:26:47,823 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:26:47,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:26:47,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1655335177, now seen corresponding path program 1 times [2023-12-24 14:26:47,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:26:47,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962146653] [2023-12-24 14:26:47,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:26:47,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:26:47,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:26:47,824 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:26:47,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 14:26:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:26:48,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 14:26:48,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:26:51,196 INFO L349 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2023-12-24 14:26:51,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 33 [2023-12-24 14:26:51,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-12-24 14:26:51,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:26:51,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 27 [2023-12-24 14:26:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 9 proven. 387 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 14:26:51,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:26:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:26:52,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:26:52,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962146653] [2023-12-24 14:26:52,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962146653] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:26:52,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:26:52,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-12-24 14:26:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893810109] [2023-12-24 14:26:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:26:52,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:26:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:26:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:26:52,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2023-12-24 14:26:52,037 INFO L87 Difference]: Start difference. First operand 481 states and 556 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:26:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:26:52,887 INFO L93 Difference]: Finished difference Result 923 states and 1072 transitions. [2023-12-24 14:26:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:26:52,888 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 157 [2023-12-24 14:26:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:26:52,890 INFO L225 Difference]: With dead ends: 923 [2023-12-24 14:26:52,890 INFO L226 Difference]: Without dead ends: 581 [2023-12-24 14:26:52,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2023-12-24 14:26:52,892 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 165 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:26:52,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1429 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 14:26:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-12-24 14:26:53,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 481. [2023-12-24 14:26:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 378 states have (on average 1.1534391534391535) internal successors, (436), 380 states have internal predecessors, (436), 60 states have call successors, (60), 42 states have call predecessors, (60), 42 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 14:26:53,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 556 transitions. [2023-12-24 14:26:53,043 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 556 transitions. Word has length 157 [2023-12-24 14:26:53,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:26:53,043 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 556 transitions. [2023-12-24 14:26:53,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:26:53,043 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 556 transitions. [2023-12-24 14:26:53,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:26:53,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:26:53,044 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:26:53,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 14:26:53,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:26:53,248 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:26:53,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:26:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1594036119, now seen corresponding path program 1 times [2023-12-24 14:26:53,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:26:53,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357407680] [2023-12-24 14:26:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:26:53,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:26:53,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:26:53,250 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:26:53,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 14:26:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:26:53,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-24 14:26:53,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:26:55,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:26:56,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 14:26:56,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2023-12-24 14:27:00,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2023-12-24 14:27:00,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2023-12-24 14:27:01,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:27:01,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 107 treesize of output 55 [2023-12-24 14:27:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 98 proven. 396 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 14:27:02,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:27:08,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:27:08,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357407680] [2023-12-24 14:27:08,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357407680] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:27:08,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [10966708] [2023-12-24 14:27:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:27:08,980 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:27:08,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:27:08,981 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:27:08,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-24 14:27:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:27:10,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-24 14:27:10,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:27:12,641 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 14:27:14,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 14:27:15,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2023-12-24 14:27:20,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 49 [2023-12-24 14:27:20,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 65 [2023-12-24 14:27:22,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 56 [2023-12-24 14:27:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 103 proven. 396 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-12-24 14:27:22,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:27:33,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [10966708] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:27:33,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:27:33,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 44 [2023-12-24 14:27:33,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553412203] [2023-12-24 14:27:33,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:27:33,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-24 14:27:33,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:27:33,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-24 14:27:33,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=2750, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 14:27:33,371 INFO L87 Difference]: Start difference. First operand 481 states and 556 transitions. Second operand has 45 states, 39 states have (on average 3.923076923076923) internal successors, (153), 41 states have internal predecessors, (153), 14 states have call successors, (38), 11 states have call predecessors, (38), 14 states have return successors, (38), 8 states have call predecessors, (38), 14 states have call successors, (38) [2023-12-24 14:28:01,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:28:01,234 INFO L93 Difference]: Finished difference Result 995 states and 1155 transitions. [2023-12-24 14:28:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-24 14:28:01,235 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 3.923076923076923) internal successors, (153), 41 states have internal predecessors, (153), 14 states have call successors, (38), 11 states have call predecessors, (38), 14 states have return successors, (38), 8 states have call predecessors, (38), 14 states have call successors, (38) Word has length 157 [2023-12-24 14:28:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:28:01,237 INFO L225 Difference]: With dead ends: 995 [2023-12-24 14:28:01,237 INFO L226 Difference]: Without dead ends: 653 [2023-12-24 14:28:01,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 434 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2338 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=1336, Invalid=6320, Unknown=0, NotChecked=0, Total=7656 [2023-12-24 14:28:01,240 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 957 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 2188 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-24 14:28:01,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 3215 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2188 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-24 14:28:01,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-12-24 14:28:01,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 531. [2023-12-24 14:28:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 424 states have (on average 1.1556603773584906) internal successors, (490), 426 states have internal predecessors, (490), 60 states have call successors, (60), 46 states have call predecessors, (60), 46 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 14:28:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 610 transitions. [2023-12-24 14:28:01,421 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 610 transitions. Word has length 157 [2023-12-24 14:28:01,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:28:01,421 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 610 transitions. [2023-12-24 14:28:01,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 3.923076923076923) internal successors, (153), 41 states have internal predecessors, (153), 14 states have call successors, (38), 11 states have call predecessors, (38), 14 states have return successors, (38), 8 states have call predecessors, (38), 14 states have call successors, (38) [2023-12-24 14:28:01,422 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 610 transitions. [2023-12-24 14:28:01,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:28:01,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:28:01,423 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:01,437 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 (24)] Ended with exit code 0 [2023-12-24 14:28:01,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-12-24 14:28:01,837 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=3,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:28:01,838 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:28:01,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:28:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash -618586880, now seen corresponding path program 1 times [2023-12-24 14:28:01,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:28:01,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315321727] [2023-12-24 14:28:01,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:28:01,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:28:01,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:28:01,840 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:28:01,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 14:28:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:28:02,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 14:28:02,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:28:06,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:28:08,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 14:28:09,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 14:28:13,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:28:15,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 14:28:15,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:28:18,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2023-12-24 14:28:19,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 68 [2023-12-24 14:28:21,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:28:21,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 42 [2023-12-24 14:28:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 158 proven. 411 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-24 14:28:22,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:28:24,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:28:24,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315321727] [2023-12-24 14:28:24,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315321727] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:28:24,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1343664271] [2023-12-24 14:28:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:28:24,419 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:28:24,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:28:24,420 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:28:24,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-12-24 14:28:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:28:26,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-24 14:28:26,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:28:30,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:28:33,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 14:28:34,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-24 14:28:38,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:28:41,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 14:28:45,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2023-12-24 14:28:46,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 57 [2023-12-24 14:28:47,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 42 [2023-12-24 14:28:47,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2023-12-24 14:28:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 158 proven. 411 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-24 14:28:47,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:28:48,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1343664271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:28:48,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:28:48,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-24 14:28:48,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913235152] [2023-12-24 14:28:48,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:28:48,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 14:28:48,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:28:48,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 14:28:48,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2206, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 14:28:48,774 INFO L87 Difference]: Start difference. First operand 531 states and 610 transitions. Second operand has 44 states, 38 states have (on average 4.315789473684211) internal successors, (164), 39 states have internal predecessors, (164), 18 states have call successors, (38), 14 states have call predecessors, (38), 18 states have return successors, (38), 14 states have call predecessors, (38), 18 states have call successors, (38) [2023-12-24 14:29:09,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:29:09,457 INFO L93 Difference]: Finished difference Result 1022 states and 1179 transitions. [2023-12-24 14:29:09,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-24 14:29:09,458 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 38 states have (on average 4.315789473684211) internal successors, (164), 39 states have internal predecessors, (164), 18 states have call successors, (38), 14 states have call predecessors, (38), 18 states have return successors, (38), 14 states have call predecessors, (38), 18 states have call successors, (38) Word has length 157 [2023-12-24 14:29:09,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:29:09,460 INFO L225 Difference]: With dead ends: 1022 [2023-12-24 14:29:09,460 INFO L226 Difference]: Without dead ends: 638 [2023-12-24 14:29:09,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1730 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=980, Invalid=5182, Unknown=0, NotChecked=0, Total=6162 [2023-12-24 14:29:09,463 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 956 mSDsluCounter, 2760 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:29:09,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 2903 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-12-24 14:29:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-12-24 14:29:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 529. [2023-12-24 14:29:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 422 states have (on average 1.1492890995260663) internal successors, (485), 424 states have internal predecessors, (485), 60 states have call successors, (60), 46 states have call predecessors, (60), 46 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 14:29:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 605 transitions. [2023-12-24 14:29:09,643 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 605 transitions. Word has length 157 [2023-12-24 14:29:09,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:29:09,643 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 605 transitions. [2023-12-24 14:29:09,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 38 states have (on average 4.315789473684211) internal successors, (164), 39 states have internal predecessors, (164), 18 states have call successors, (38), 14 states have call predecessors, (38), 18 states have return successors, (38), 14 states have call predecessors, (38), 18 states have call successors, (38) [2023-12-24 14:29:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 605 transitions. [2023-12-24 14:29:09,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:29:09,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:29:09,645 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:09,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2023-12-24 14:29:09,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 14:29:10,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:29:10,060 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:29:10,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:29:10,060 INFO L85 PathProgramCache]: Analyzing trace with hash -777703143, now seen corresponding path program 1 times [2023-12-24 14:29:10,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:29:10,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352918137] [2023-12-24 14:29:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:29:10,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:29:10,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:29:10,062 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:29:10,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 14:29:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:29:10,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 14:29:10,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:29:14,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:29:16,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 14:29:21,940 INFO L349 Elim1Store]: treesize reduction 31, result has 26.2 percent of original size [2023-12-24 14:29:21,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 54 [2023-12-24 14:29:22,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 49 [2023-12-24 14:29:23,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:29:23,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 37 [2023-12-24 14:29:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 62 proven. 387 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-24 14:29:23,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:29:26,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:29:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352918137] [2023-12-24 14:29:26,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352918137] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:29:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1946251968] [2023-12-24 14:29:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:29:26,015 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:29:26,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:29:26,016 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:29:26,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-24 14:29:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:29:27,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 14:29:27,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:29:32,185 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 14:29:34,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 14:29:39,771 INFO L349 Elim1Store]: treesize reduction 31, result has 26.2 percent of original size [2023-12-24 14:29:39,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 44 [2023-12-24 14:29:40,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2023-12-24 14:29:41,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2023-12-24 14:29:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 66 proven. 390 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-24 14:29:41,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:29:42,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1946251968] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:29:42,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:29:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 36 [2023-12-24 14:29:42,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128057676] [2023-12-24 14:29:42,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:29:42,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-24 14:29:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:29:42,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-24 14:29:42,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1597, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 14:29:42,271 INFO L87 Difference]: Start difference. First operand 529 states and 605 transitions. Second operand has 37 states, 32 states have (on average 4.40625) internal successors, (141), 31 states have internal predecessors, (141), 10 states have call successors, (38), 9 states have call predecessors, (38), 10 states have return successors, (38), 7 states have call predecessors, (38), 10 states have call successors, (38) [2023-12-24 14:29:58,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:29:58,104 INFO L93 Difference]: Finished difference Result 1041 states and 1193 transitions. [2023-12-24 14:29:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 14:29:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 4.40625) internal successors, (141), 31 states have internal predecessors, (141), 10 states have call successors, (38), 9 states have call predecessors, (38), 10 states have return successors, (38), 7 states have call predecessors, (38), 10 states have call successors, (38) Word has length 157 [2023-12-24 14:29:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:29:58,108 INFO L225 Difference]: With dead ends: 1041 [2023-12-24 14:29:58,108 INFO L226 Difference]: Without dead ends: 659 [2023-12-24 14:29:58,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=749, Invalid=3673, Unknown=0, NotChecked=0, Total=4422 [2023-12-24 14:29:58,111 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 977 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:29:58,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 2335 Invalid, 1972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-24 14:29:58,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-24 14:29:58,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 529. [2023-12-24 14:29:58,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 422 states have (on average 1.146919431279621) internal successors, (484), 424 states have internal predecessors, (484), 60 states have call successors, (60), 46 states have call predecessors, (60), 46 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 14:29:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 604 transitions. [2023-12-24 14:29:58,309 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 604 transitions. Word has length 157 [2023-12-24 14:29:58,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:29:58,309 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 604 transitions. [2023-12-24 14:29:58,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 4.40625) internal successors, (141), 31 states have internal predecessors, (141), 10 states have call successors, (38), 9 states have call predecessors, (38), 10 states have return successors, (38), 7 states have call predecessors, (38), 10 states have call successors, (38) [2023-12-24 14:29:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 604 transitions. [2023-12-24 14:29:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 14:29:58,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:29:58,311 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:58,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-12-24 14:29:58,540 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 14:29:58,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:29:58,728 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:29:58,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:29:58,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1788820393, now seen corresponding path program 1 times [2023-12-24 14:29:58,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:29:58,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914218514] [2023-12-24 14:29:58,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:29:58,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:29:58,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:29:58,730 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:29:58,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 14:29:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:29:59,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 14:29:59,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:30:02,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:30:03,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 14:30:04,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 14:30:09,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2023-12-24 14:30:09,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 57 [2023-12-24 14:30:10,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:30:10,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 45 [2023-12-24 14:30:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 87 proven. 396 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-24 14:30:11,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:30:17,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:30:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914218514] [2023-12-24 14:30:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914218514] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:30:17,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [980205999] [2023-12-24 14:30:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:30:17,218 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:30:17,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:30:17,225 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:30:17,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-12-24 14:30:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:30:19,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-24 14:30:19,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:30:22,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:30:24,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 14:30:27,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-24 14:30:34,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 46 [2023-12-24 14:30:35,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 65 [2023-12-24 14:30:37,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 54 [2023-12-24 14:30:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 98 proven. 396 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 14:30:37,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:30:51,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [980205999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:30:51,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:30:51,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 39 [2023-12-24 14:30:51,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872750344] [2023-12-24 14:30:51,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:30:51,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 14:30:51,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:30:51,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 14:30:51,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=613, Invalid=3169, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 14:30:51,887 INFO L87 Difference]: Start difference. First operand 529 states and 604 transitions. Second operand has 40 states, 35 states have (on average 4.2) internal successors, (147), 37 states have internal predecessors, (147), 12 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (38), 7 states have call predecessors, (38), 12 states have call successors, (38) [2023-12-24 14:31:10,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:31:10,704 INFO L93 Difference]: Finished difference Result 1015 states and 1165 transitions. [2023-12-24 14:31:10,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-24 14:31:10,707 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 4.2) internal successors, (147), 37 states have internal predecessors, (147), 12 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (38), 7 states have call predecessors, (38), 12 states have call successors, (38) Word has length 157 [2023-12-24 14:31:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:31:10,709 INFO L225 Difference]: With dead ends: 1015 [2023-12-24 14:31:10,709 INFO L226 Difference]: Without dead ends: 633 [2023-12-24 14:31:10,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 431 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2288 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=1601, Invalid=6771, Unknown=0, NotChecked=0, Total=8372 [2023-12-24 14:31:10,712 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 943 mSDsluCounter, 3618 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 3808 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:31:10,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 3808 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-24 14:31:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-12-24 14:31:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 525. [2023-12-24 14:31:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 418 states have (on average 1.145933014354067) internal successors, (479), 420 states have internal predecessors, (479), 60 states have call successors, (60), 46 states have call predecessors, (60), 46 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 14:31:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 599 transitions. [2023-12-24 14:31:10,867 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 599 transitions. Word has length 157 [2023-12-24 14:31:10,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:31:10,867 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 599 transitions. [2023-12-24 14:31:10,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 4.2) internal successors, (147), 37 states have internal predecessors, (147), 12 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (38), 7 states have call predecessors, (38), 12 states have call successors, (38) [2023-12-24 14:31:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 599 transitions. [2023-12-24 14:31:10,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 14:31:10,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:31:10,869 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:31:10,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 14:31:11,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2023-12-24 14:31:11,282 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=3,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:31:11,282 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:31:11,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:31:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1764088473, now seen corresponding path program 1 times [2023-12-24 14:31:11,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:31:11,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972217338] [2023-12-24 14:31:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:31:11,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:31:11,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:31:11,285 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:31:11,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 14:31:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:31:11,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:31:11,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:31:12,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:31:12,176 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 157 treesize of output 67 [2023-12-24 14:31:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 192 proven. 8 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-12-24 14:31:12,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:31:12,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:31:12,702 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 101 treesize of output 1 [2023-12-24 14:31:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 14:31:12,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:31:12,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972217338] [2023-12-24 14:31:12,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972217338] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:31:12,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:31:12,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 14:31:12,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317247438] [2023-12-24 14:31:12,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:31:12,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 14:31:12,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:31:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 14:31:12,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:31:12,708 INFO L87 Difference]: Start difference. First operand 525 states and 599 transitions. Second operand has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (37), 3 states have call predecessors, (37), 4 states have call successors, (37) [2023-12-24 14:31:16,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:31:16,444 INFO L93 Difference]: Finished difference Result 987 states and 1129 transitions. [2023-12-24 14:31:16,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 14:31:16,445 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (37), 3 states have call predecessors, (37), 4 states have call successors, (37) Word has length 158 [2023-12-24 14:31:16,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:31:16,447 INFO L225 Difference]: With dead ends: 987 [2023-12-24 14:31:16,447 INFO L226 Difference]: Without dead ends: 529 [2023-12-24 14:31:16,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2023-12-24 14:31:16,449 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 146 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:31:16,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 593 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-24 14:31:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-12-24 14:31:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 521. [2023-12-24 14:31:16,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 414 states have (on average 1.1376811594202898) internal successors, (471), 416 states have internal predecessors, (471), 60 states have call successors, (60), 46 states have call predecessors, (60), 46 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 14:31:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 591 transitions. [2023-12-24 14:31:16,621 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 591 transitions. Word has length 158 [2023-12-24 14:31:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:31:16,621 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 591 transitions. [2023-12-24 14:31:16,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (37), 3 states have call predecessors, (37), 4 states have call successors, (37) [2023-12-24 14:31:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 591 transitions. [2023-12-24 14:31:16,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 14:31:16,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:31:16,623 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:31:16,638 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 14:31:16,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:31:16,838 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:31:16,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:31:16,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2102376023, now seen corresponding path program 1 times [2023-12-24 14:31:16,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:31:16,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964100691] [2023-12-24 14:31:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:31:16,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:31:16,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:31:16,840 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:31:16,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 14:31:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:31:17,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 14:31:17,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:31:18,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 14:31:27,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 69 [2023-12-24 14:31:32,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2023-12-24 14:31:42,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 71 [2023-12-24 14:31:43,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:31:43,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 237 treesize of output 109 [2023-12-24 14:31:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 1 proven. 259 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 14:31:43,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:31:44,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:31:44,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964100691] [2023-12-24 14:31:44,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964100691] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:31:44,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1401004266] [2023-12-24 14:31:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:31:44,614 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:31:44,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:31:44,628 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:31:44,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2023-12-24 14:31:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:31:47,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 14:31:47,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:31:52,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 14:32:12,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 61 [2023-12-24 14:32:21,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 69 [2023-12-24 14:32:36,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 71 [2023-12-24 14:32:45,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 85 [2023-12-24 14:32:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 17 proven. 243 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 14:32:45,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:32:49,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1401004266] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:32:49,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:32:49,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 28 [2023-12-24 14:32:49,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743726214] [2023-12-24 14:32:49,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:32:49,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 14:32:49,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:32:49,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 14:32:49,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=900, Unknown=11, NotChecked=0, Total=1056 [2023-12-24 14:32:49,832 INFO L87 Difference]: Start difference. First operand 521 states and 591 transitions. Second operand has 29 states, 27 states have (on average 5.0) internal successors, (135), 25 states have internal predecessors, (135), 8 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 7 states have call predecessors, (38), 8 states have call successors, (38) [2023-12-24 14:32:56,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:33:00,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:33:04,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:33:20,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:33:37,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:33:41,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:33:45,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:33:49,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:33:53,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:33:57,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:34:01,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:34:05,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:34:09,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:34:17,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:34:26,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:34:30,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-24 14:35:13,280 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 14:35:13,306 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 (33)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 14:35:13,311 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 14:35:14,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2023-12-24 14:35:14,344 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 14:35:14,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 338 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 137.6s TimeCoverageRelationStatistics Valid=334, Invalid=1531, Unknown=27, NotChecked=0, Total=1892 [2023-12-24 14:35:14,368 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 233 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 169 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:35:14,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1070 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1153 Invalid, 16 Unknown, 0 Unchecked, 76.7s Time] [2023-12-24 14:35:14,369 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 14:35:14,369 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-24 14:35:14,373 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] [2023-12-24 14:35:14,375 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 14:35:14,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 02:35:14 BoogieIcfgContainer [2023-12-24 14:35:14,401 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 14:35:14,401 INFO L158 Benchmark]: Toolchain (without parser) took 856074.73ms. Allocated memory was 320.9MB in the beginning and 401.6MB in the end (delta: 80.7MB). Free memory was 272.6MB in the beginning and 185.9MB in the end (delta: 86.7MB). Peak memory consumption was 168.7MB. Max. memory is 8.0GB. [2023-12-24 14:35:14,402 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 192.9MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 14:35:14,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.60ms. Allocated memory is still 320.9MB. Free memory was 272.6MB in the beginning and 255.5MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 14:35:14,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.92ms. Allocated memory is still 320.9MB. Free memory was 255.5MB in the beginning and 251.6MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 14:35:14,408 INFO L158 Benchmark]: Boogie Preprocessor took 110.13ms. Allocated memory is still 320.9MB. Free memory was 251.6MB in the beginning and 244.6MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-24 14:35:14,408 INFO L158 Benchmark]: RCFGBuilder took 1807.68ms. Allocated memory is still 320.9MB. Free memory was 244.6MB in the beginning and 256.0MB in the end (delta: -11.4MB). Peak memory consumption was 29.3MB. Max. memory is 8.0GB. [2023-12-24 14:35:14,412 INFO L158 Benchmark]: TraceAbstraction took 853733.91ms. Allocated memory was 320.9MB in the beginning and 401.6MB in the end (delta: 80.7MB). Free memory was 255.5MB in the beginning and 185.9MB in the end (delta: 69.6MB). Peak memory consumption was 150.9MB. Max. memory is 8.0GB. [2023-12-24 14:35:14,412 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 192.9MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 324.60ms. Allocated memory is still 320.9MB. Free memory was 272.6MB in the beginning and 255.5MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 92.92ms. Allocated memory is still 320.9MB. Free memory was 255.5MB in the beginning and 251.6MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 110.13ms. Allocated memory is still 320.9MB. Free memory was 251.6MB in the beginning and 244.6MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1807.68ms. Allocated memory is still 320.9MB. Free memory was 244.6MB in the beginning and 256.0MB in the end (delta: -11.4MB). Peak memory consumption was 29.3MB. Max. memory is 8.0GB. * TraceAbstraction took 853733.91ms. Allocated memory was 320.9MB in the beginning and 401.6MB in the end (delta: 80.7MB). Free memory was 255.5MB in the beginning and 185.9MB in the end (delta: 69.6MB). Peak memory consumption was 150.9MB. 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 executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 853.7s, OverallIterations: 24, TraceHistogramMax: 19, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 462.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 mSolverCounterUnknown, 11660 SdHoareTripleChecker+Valid, 273.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11631 mSDsluCounter, 31556 SdHoareTripleChecker+Invalid, 269.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27972 mSDsCounter, 2131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17492 IncrementalHoareTripleChecker+Invalid, 19673 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2131 mSolverCounterUnsat, 3584 mSDtfsCounter, 17492 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6767 GetRequests, 5973 SyntacticMatches, 18 SemanticMatches, 776 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12298 ImplicationChecksByTransitivity, 368.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=579occurred in iteration=12, InterpolantAutomatonStates: 410, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 23 MinimizatonAttempts, 1499 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.6s SsaConstructionTime, 24.1s SatisfiabilityAnalysisTime, 351.6s InterpolantComputationTime, 5098 NumberOfCodeBlocks, 5098 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 5689 ConstructedInterpolants, 1671 QuantifiedInterpolants, 174637 SizeOfPredicates, 578 NumberOfNonLiveVariables, 13090 ConjunctsInSsa, 892 ConjunctsInUnsatCore, 37 InterpolantComputations, 13 PerfectInterpolantSequences, 17720/25308 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