/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-84.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 15:41:18,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 15:41:19,006 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 15:41:19,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 15:41:19,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 15:41:19,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 15:41:19,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 15:41:19,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 15:41:19,039 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 15:41:19,039 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 15:41:19,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 15:41:19,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 15:41:19,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 15:41:19,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 15:41:19,041 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 15:41:19,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 15:41:19,041 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 15:41:19,042 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 15:41:19,042 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 15:41:19,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 15:41:19,042 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 15:41:19,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 15:41:19,043 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 15:41:19,043 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 15:41:19,043 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 15:41:19,044 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 15:41:19,044 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 15:41:19,044 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 15:41:19,044 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 15:41:19,044 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 15:41:19,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 15:41:19,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 15:41:19,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 15:41:19,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 15:41:19,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:41:19,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 15:41:19,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 15:41:19,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 15:41:19,046 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 15:41:19,046 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 15:41:19,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 15:41:19,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 15:41:19,047 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 15:41:19,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 15:41:19,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 15:41:19,048 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 15:41:19,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 15:41:19,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 15:41:19,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 15:41:19,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 15:41:19,297 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 15:41:19,297 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 15:41:19,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-84.i [2023-12-24 15:41:20,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 15:41:20,647 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 15:41:20,648 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-84.i [2023-12-24 15:41:20,655 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f261d60/601acd8b802e44b5b30576611c538d53/FLAGc16ad3863 [2023-12-24 15:41:20,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f261d60/601acd8b802e44b5b30576611c538d53 [2023-12-24 15:41:20,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 15:41:20,677 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 15:41:20,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 15:41:20,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 15:41:20,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 15:41:20,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:20,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27da5fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20, skipping insertion in model container [2023-12-24 15:41:20,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:20,721 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 15:41:20,833 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-84.i[917,930] [2023-12-24 15:41:20,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:41:20,913 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 15:41:20,921 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-84.i[917,930] [2023-12-24 15:41:20,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:41:20,969 INFO L206 MainTranslator]: Completed translation [2023-12-24 15:41:20,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20 WrapperNode [2023-12-24 15:41:20,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 15:41:20,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 15:41:20,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 15:41:20,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 15:41:20,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:20,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:21,030 INFO L138 Inliner]: procedures = 33, calls = 158, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 444 [2023-12-24 15:41:21,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 15:41:21,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 15:41:21,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 15:41:21,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 15:41:21,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:21,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:21,048 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:21,068 INFO L175 MemorySlicer]: Split 122 memory accesses to 6 slices as follows [2, 6, 11, 19, 72, 12]. 59 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 1, 2, 3, 7, 2]. The 17 writes are split as follows [0, 1, 2, 4, 8, 2]. [2023-12-24 15:41:21,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:21,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:21,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:21,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:21,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:21,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:21,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 15:41:21,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 15:41:21,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 15:41:21,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 15:41:21,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (1/1) ... [2023-12-24 15:41:21,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:41:21,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 15:41:21,147 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 15:41:21,156 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 15:41:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 15:41:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 15:41:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 15:41:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 15:41:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 15:41:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 15:41:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 15:41:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 15:41:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 15:41:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 15:41:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 15:41:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 15:41:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 15:41:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 15:41:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 15:41:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 15:41:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 15:41:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 15:41:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 15:41:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 15:41:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 15:41:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 15:41:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 15:41:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 15:41:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 15:41:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 15:41:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 15:41:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 15:41:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 15:41:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 15:41:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 15:41:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 15:41:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 15:41:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 15:41:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 15:41:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 15:41:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 15:41:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 15:41:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 15:41:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 15:41:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 15:41:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 15:41:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 15:41:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 15:41:21,197 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 15:41:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 15:41:21,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 15:41:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 15:41:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 15:41:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 15:41:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 15:41:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 15:41:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 15:41:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 15:41:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 15:41:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 15:41:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 15:41:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 15:41:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 15:41:21,332 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 15:41:21,334 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 15:41:21,877 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 15:41:21,917 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 15:41:21,917 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 15:41:21,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:41:21 BoogieIcfgContainer [2023-12-24 15:41:21,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 15:41:21,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 15:41:21,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 15:41:21,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 15:41:21,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 03:41:20" (1/3) ... [2023-12-24 15:41:21,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce19165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:41:21, skipping insertion in model container [2023-12-24 15:41:21,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:20" (2/3) ... [2023-12-24 15:41:21,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce19165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:41:21, skipping insertion in model container [2023-12-24 15:41:21,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:41:21" (3/3) ... [2023-12-24 15:41:21,924 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-84.i [2023-12-24 15:41:21,940 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 15:41:21,940 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 15:41:21,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 15:41:21,986 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;@28fb8ca5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 15:41:21,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 15:41:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 74 states have internal predecessors, (101), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:41:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:41:22,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:41:22,010 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:22,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:41:22,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:41:22,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1796415869, now seen corresponding path program 1 times [2023-12-24 15:41:22,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:41:22,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708527996] [2023-12-24 15:41:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:41:22,028 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 15:41:22,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:41:22,032 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 15:41:22,043 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 15:41:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:41:22,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 15:41:22,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:41:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-12-24 15:41:22,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:41:22,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:41:22,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708527996] [2023-12-24 15:41:22,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708527996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:41:22,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:41:22,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 15:41:22,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453905084] [2023-12-24 15:41:22,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:41:22,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 15:41:22,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:41:22,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 15:41:22,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 15:41:22,488 INFO L87 Difference]: Start difference. First operand has 96 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 74 states have internal predecessors, (101), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 15:41:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:41:22,569 INFO L93 Difference]: Finished difference Result 189 states and 300 transitions. [2023-12-24 15:41:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 15:41:22,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 145 [2023-12-24 15:41:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:41:22,582 INFO L225 Difference]: With dead ends: 189 [2023-12-24 15:41:22,582 INFO L226 Difference]: Without dead ends: 94 [2023-12-24 15:41:22,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 144 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 15:41:22,589 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:41:22,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:41:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-24 15:41:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-12-24 15:41:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:41:22,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 136 transitions. [2023-12-24 15:41:22,628 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 136 transitions. Word has length 145 [2023-12-24 15:41:22,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:41:22,629 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 136 transitions. [2023-12-24 15:41:22,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 15:41:22,630 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 136 transitions. [2023-12-24 15:41:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:41:22,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:41:22,633 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:22,643 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 15:41:22,840 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 15:41:22,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:41:22,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:41:22,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1563679197, now seen corresponding path program 1 times [2023-12-24 15:41:22,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:41:22,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684567751] [2023-12-24 15:41:22,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:41:22,843 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 15:41:22,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:41:22,844 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 15:41:22,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 15:41:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:41:23,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 15:41:23,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:41:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2023-12-24 15:41:23,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:41:23,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:41:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684567751] [2023-12-24 15:41:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684567751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:41:23,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:41:23,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 15:41:23,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81255320] [2023-12-24 15:41:23,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:41:23,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 15:41:23,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:41:23,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 15:41:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 15:41:23,221 INFO L87 Difference]: Start difference. First operand 94 states and 136 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 15:41:23,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:41:23,289 INFO L93 Difference]: Finished difference Result 193 states and 280 transitions. [2023-12-24 15:41:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:41:23,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 145 [2023-12-24 15:41:23,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:41:23,291 INFO L225 Difference]: With dead ends: 193 [2023-12-24 15:41:23,291 INFO L226 Difference]: Without dead ends: 100 [2023-12-24 15:41:23,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 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 15:41:23,293 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 10 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:41:23,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 388 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:41:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-24 15:41:23,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2023-12-24 15:41:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:41:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2023-12-24 15:41:23,305 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 138 transitions. Word has length 145 [2023-12-24 15:41:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:41:23,305 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 138 transitions. [2023-12-24 15:41:23,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 15:41:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 138 transitions. [2023-12-24 15:41:23,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:41:23,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:41:23,308 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:23,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 15:41:23,516 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 15:41:23,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:41:23,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:41:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2108551771, now seen corresponding path program 1 times [2023-12-24 15:41:23,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:41:23,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139117382] [2023-12-24 15:41:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:41:23,518 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 15:41:23,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:41:23,521 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 15:41:23,554 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 15:41:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:41:23,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:41:23,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:41:23,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:41:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:41:24,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:41:24,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:41:24,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139117382] [2023-12-24 15:41:24,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139117382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:41:24,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:41:24,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 15:41:24,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338488820] [2023-12-24 15:41:24,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:41:24,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:41:24,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:41:24,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:41:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:41:24,093 INFO L87 Difference]: Start difference. First operand 96 states and 138 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:41:24,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:41:24,436 INFO L93 Difference]: Finished difference Result 287 states and 413 transitions. [2023-12-24 15:41:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:41:24,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2023-12-24 15:41:24,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:41:24,439 INFO L225 Difference]: With dead ends: 287 [2023-12-24 15:41:24,439 INFO L226 Difference]: Without dead ends: 192 [2023-12-24 15:41:24,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:41:24,441 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 133 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:41:24,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 503 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:41:24,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-24 15:41:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 164. [2023-12-24 15:41:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 121 states have (on average 1.28099173553719) internal successors, (155), 121 states have internal predecessors, (155), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 15:41:24,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 235 transitions. [2023-12-24 15:41:24,464 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 235 transitions. Word has length 145 [2023-12-24 15:41:24,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:41:24,465 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 235 transitions. [2023-12-24 15:41:24,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:41:24,465 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 235 transitions. [2023-12-24 15:41:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 15:41:24,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:41:24,467 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:24,478 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 15:41:24,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:41:24,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:41:24,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:41:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1741529219, now seen corresponding path program 1 times [2023-12-24 15:41:24,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:41:24,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874479920] [2023-12-24 15:41:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:41:24,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:41:24,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:41:24,679 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:41:24,683 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 15:41:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:41:24,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 15:41:24,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:41:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:41:24,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:41:24,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:41:24,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874479920] [2023-12-24 15:41:24,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874479920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:41:24,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:41:24,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:41:24,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665357649] [2023-12-24 15:41:24,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:41:24,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:41:24,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:41:24,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:41:25,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:41:25,000 INFO L87 Difference]: Start difference. First operand 164 states and 235 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:41:25,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:41:25,102 INFO L93 Difference]: Finished difference Result 275 states and 394 transitions. [2023-12-24 15:41:25,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 15:41:25,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2023-12-24 15:41:25,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:41:25,105 INFO L225 Difference]: With dead ends: 275 [2023-12-24 15:41:25,106 INFO L226 Difference]: Without dead ends: 180 [2023-12-24 15:41:25,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:41:25,107 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 23 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:41:25,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 620 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:41:25,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-24 15:41:25,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 170. [2023-12-24 15:41:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 127 states have (on average 1.2677165354330708) internal successors, (161), 127 states have internal predecessors, (161), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 15:41:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 241 transitions. [2023-12-24 15:41:25,162 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 241 transitions. Word has length 153 [2023-12-24 15:41:25,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:41:25,163 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 241 transitions. [2023-12-24 15:41:25,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:41:25,163 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 241 transitions. [2023-12-24 15:41:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 15:41:25,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:41:25,165 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:25,176 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 15:41:25,373 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 15:41:25,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:41:25,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:41:25,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1741469637, now seen corresponding path program 1 times [2023-12-24 15:41:25,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:41:25,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306521209] [2023-12-24 15:41:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:41:25,375 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 15:41:25,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:41:25,376 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 15:41:25,379 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 15:41:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:41:25,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 15:41:25,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:41:26,944 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 15:41:27,183 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 15:41:27,540 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 15:41:27,799 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 15:41:28,153 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 15:41:28,950 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 44 treesize of output 45 [2023-12-24 15:41:29,325 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:41:29,326 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 65 treesize of output 33 [2023-12-24 15:41:29,427 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 112 proven. 256 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-12-24 15:41:29,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:41:30,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:41:30,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306521209] [2023-12-24 15:41:30,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306521209] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:41:30,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [624947417] [2023-12-24 15:41:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:41:30,412 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:41:30,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:41:30,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:41:30,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 15:41:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:41:31,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 15:41:31,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:41:32,189 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 15:41:32,819 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 15:41:33,382 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 15:41:33,817 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 41 treesize of output 28 [2023-12-24 15:41:34,239 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 41 treesize of output 28 [2023-12-24 15:41:35,531 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 55 [2023-12-24 15:41:36,052 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 71 treesize of output 39 [2023-12-24 15:41:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 385 proven. 234 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-12-24 15:41:36,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:41:37,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [624947417] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:41:37,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:41:37,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 28 [2023-12-24 15:41:37,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753850592] [2023-12-24 15:41:37,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:41:37,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 15:41:37,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:41:37,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 15:41:37,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1370, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 15:41:37,908 INFO L87 Difference]: Start difference. First operand 170 states and 241 transitions. Second operand has 29 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 10 states have call successors, (40), 9 states have call predecessors, (40), 10 states have return successors, (40), 8 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-24 15:41:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:41:45,146 INFO L93 Difference]: Finished difference Result 433 states and 585 transitions. [2023-12-24 15:41:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-24 15:41:45,147 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 10 states have call successors, (40), 9 states have call predecessors, (40), 10 states have return successors, (40), 8 states have call predecessors, (40), 10 states have call successors, (40) Word has length 153 [2023-12-24 15:41:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:41:45,149 INFO L225 Difference]: With dead ends: 433 [2023-12-24 15:41:45,149 INFO L226 Difference]: Without dead ends: 332 [2023-12-24 15:41:45,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 369 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1056, Invalid=4200, Unknown=0, NotChecked=0, Total=5256 [2023-12-24 15:41:45,152 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 972 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:41:45,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1242 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-24 15:41:45,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-24 15:41:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 273. [2023-12-24 15:41:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 216 states have (on average 1.2685185185185186) internal successors, (274), 217 states have internal predecessors, (274), 47 states have call successors, (47), 9 states have call predecessors, (47), 9 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-24 15:41:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 368 transitions. [2023-12-24 15:41:45,202 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 368 transitions. Word has length 153 [2023-12-24 15:41:45,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:41:45,203 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 368 transitions. [2023-12-24 15:41:45,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 10 states have call successors, (40), 9 states have call predecessors, (40), 10 states have return successors, (40), 8 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-24 15:41:45,203 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 368 transitions. [2023-12-24 15:41:45,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 15:41:45,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:41:45,205 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:45,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-24 15:41:45,418 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 15:41:45,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:41:45,613 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:41:45,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:41:45,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1146676630, now seen corresponding path program 1 times [2023-12-24 15:41:45,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:41:45,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35044634] [2023-12-24 15:41:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:41:45,614 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 15:41:45,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:41:45,615 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 15:41:45,615 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 15:41:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:41:45,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 15:41:45,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:41:46,744 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 15:41:47,224 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 15:41:47,777 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 29 treesize of output 31 [2023-12-24 15:41:48,216 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 37 treesize of output 42 [2023-12-24 15:41:49,058 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 54 treesize of output 58 [2023-12-24 15:41:50,547 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 80 [2023-12-24 15:41:50,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:41:50,972 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 70 treesize of output 38 [2023-12-24 15:41:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 360 proven. 274 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-24 15:41:51,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:41:51,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:41:51,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35044634] [2023-12-24 15:41:51,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35044634] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:41:51,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1991841106] [2023-12-24 15:41:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:41:51,850 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:41:51,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:41:51,852 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:41:51,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-24 15:41:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:41:52,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 15:41:52,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:41:53,452 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 15:41:54,104 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 15:41:54,709 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 15:41:55,207 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 37 treesize of output 42 [2023-12-24 15:41:56,361 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 57 treesize of output 50 [2023-12-24 15:41:57,793 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 64 treesize of output 64 [2023-12-24 15:41:58,373 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 62 treesize of output 34 [2023-12-24 15:41:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 360 proven. 274 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-24 15:41:58,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:41:58,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1991841106] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:41:58,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:41:58,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2023-12-24 15:41:58,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835097076] [2023-12-24 15:41:58,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:41:58,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-24 15:41:58,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:41:58,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-24 15:41:58,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1943, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 15:41:58,581 INFO L87 Difference]: Start difference. First operand 273 states and 368 transitions. Second operand has 41 states, 37 states have (on average 3.918918918918919) internal successors, (145), 36 states have internal predecessors, (145), 16 states have call successors, (40), 12 states have call predecessors, (40), 16 states have return successors, (40), 16 states have call predecessors, (40), 16 states have call successors, (40) [2023-12-24 15:42:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:42:07,216 INFO L93 Difference]: Finished difference Result 616 states and 814 transitions. [2023-12-24 15:42:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-24 15:42:07,217 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 3.918918918918919) internal successors, (145), 36 states have internal predecessors, (145), 16 states have call successors, (40), 12 states have call predecessors, (40), 16 states have return successors, (40), 16 states have call predecessors, (40), 16 states have call successors, (40) Word has length 155 [2023-12-24 15:42:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:42:07,220 INFO L225 Difference]: With dead ends: 616 [2023-12-24 15:42:07,220 INFO L226 Difference]: Without dead ends: 434 [2023-12-24 15:42:07,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=874, Invalid=3956, Unknown=0, NotChecked=0, Total=4830 [2023-12-24 15:42:07,223 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 1036 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-24 15:42:07,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1447 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-24 15:42:07,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-12-24 15:42:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 326. [2023-12-24 15:42:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 264 states have (on average 1.2765151515151516) internal successors, (337), 265 states have internal predecessors, (337), 47 states have call successors, (47), 14 states have call predecessors, (47), 14 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-24 15:42:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 431 transitions. [2023-12-24 15:42:07,280 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 431 transitions. Word has length 155 [2023-12-24 15:42:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:42:07,280 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 431 transitions. [2023-12-24 15:42:07,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 3.918918918918919) internal successors, (145), 36 states have internal predecessors, (145), 16 states have call successors, (40), 12 states have call predecessors, (40), 16 states have return successors, (40), 16 states have call predecessors, (40), 16 states have call successors, (40) [2023-12-24 15:42:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 431 transitions. [2023-12-24 15:42:07,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 15:42:07,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:42:07,282 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:07,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-24 15:42:07,499 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 15:42:07,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:42:07,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:42:07,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:42:07,693 INFO L85 PathProgramCache]: Analyzing trace with hash -133187048, now seen corresponding path program 1 times [2023-12-24 15:42:07,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:42:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532927994] [2023-12-24 15:42:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:42:07,694 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 15:42:07,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:42:07,695 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 15:42:07,696 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 15:42:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:42:08,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 15:42:08,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:42:09,263 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 15:42:09,668 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 15:42:10,230 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 15:42:11,280 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 56 treesize of output 53 [2023-12-24 15:42:11,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:42:11,528 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 53 treesize of output 29 [2023-12-24 15:42:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 211 proven. 259 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-12-24 15:42:11,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:42:11,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:42:11,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532927994] [2023-12-24 15:42:11,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532927994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:42:11,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1011562427] [2023-12-24 15:42:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:42:11,891 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:42:11,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:42:11,892 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:42:11,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-24 15:42:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:42:12,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 15:42:12,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:42:13,999 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 15:42:14,611 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 15:42:15,484 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 15:42:16,593 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 56 treesize of output 53 [2023-12-24 15:42:16,902 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 68 treesize of output 36 [2023-12-24 15:42:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 211 proven. 259 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-12-24 15:42:16,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:42:17,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1011562427] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:42:17,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:42:17,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-12-24 15:42:17,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511440943] [2023-12-24 15:42:17,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:42:17,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-24 15:42:17,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:42:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-24 15:42:17,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 15:42:17,011 INFO L87 Difference]: Start difference. First operand 326 states and 431 transitions. Second operand has 33 states, 29 states have (on average 4.517241379310345) internal successors, (131), 28 states have internal predecessors, (131), 12 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) [2023-12-24 15:42:21,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:42:21,573 INFO L93 Difference]: Finished difference Result 682 states and 898 transitions. [2023-12-24 15:42:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 15:42:21,579 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 4.517241379310345) internal successors, (131), 28 states have internal predecessors, (131), 12 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) Word has length 155 [2023-12-24 15:42:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:42:21,581 INFO L225 Difference]: With dead ends: 682 [2023-12-24 15:42:21,581 INFO L226 Difference]: Without dead ends: 473 [2023-12-24 15:42:21,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=555, Invalid=2201, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 15:42:21,583 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 1149 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:42:21,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 872 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-24 15:42:21,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-24 15:42:21,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 345. [2023-12-24 15:42:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 283 states have (on average 1.2826855123674912) internal successors, (363), 284 states have internal predecessors, (363), 47 states have call successors, (47), 14 states have call predecessors, (47), 14 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-24 15:42:21,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 457 transitions. [2023-12-24 15:42:21,639 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 457 transitions. Word has length 155 [2023-12-24 15:42:21,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:42:21,640 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 457 transitions. [2023-12-24 15:42:21,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 4.517241379310345) internal successors, (131), 28 states have internal predecessors, (131), 12 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) [2023-12-24 15:42:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 457 transitions. [2023-12-24 15:42:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 15:42:21,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:42:21,642 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:21,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-24 15:42:21,857 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 15:42:22,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:42:22,051 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:42:22,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:42:22,051 INFO L85 PathProgramCache]: Analyzing trace with hash -687298462, now seen corresponding path program 1 times [2023-12-24 15:42:22,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:42:22,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577464316] [2023-12-24 15:42:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:42:22,052 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 15:42:22,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:42:22,053 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 15:42:22,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 15:42:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:42:22,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 15:42:22,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:42:22,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 15:42:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 18 proven. 130 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:42:22,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:42:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:42:22,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:42:22,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577464316] [2023-12-24 15:42:22,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577464316] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:42:22,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:42:22,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 15:42:22,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037729716] [2023-12-24 15:42:22,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:42:22,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:42:22,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:42:22,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:42:22,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 15:42:22,687 INFO L87 Difference]: Start difference. First operand 345 states and 457 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:42:22,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:42:22,778 INFO L93 Difference]: Finished difference Result 738 states and 988 transitions. [2023-12-24 15:42:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:42:22,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2023-12-24 15:42:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:42:22,781 INFO L225 Difference]: With dead ends: 738 [2023-12-24 15:42:22,781 INFO L226 Difference]: Without dead ends: 520 [2023-12-24 15:42:22,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:42:22,782 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 127 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:42:22,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 399 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:42:22,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-12-24 15:42:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 426. [2023-12-24 15:42:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 364 states have (on average 1.3186813186813187) internal successors, (480), 365 states have internal predecessors, (480), 47 states have call successors, (47), 14 states have call predecessors, (47), 14 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-24 15:42:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 574 transitions. [2023-12-24 15:42:22,832 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 574 transitions. Word has length 155 [2023-12-24 15:42:22,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:42:22,833 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 574 transitions. [2023-12-24 15:42:22,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:42:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 574 transitions. [2023-12-24 15:42:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 15:42:22,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:42:22,834 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:22,848 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 15:42:23,042 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 15:42:23,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:42:23,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:42:23,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1388363040, now seen corresponding path program 1 times [2023-12-24 15:42:23,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:42:23,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266790604] [2023-12-24 15:42:23,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:42:23,044 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 15:42:23,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:42:23,045 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 15:42:23,046 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 15:42:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:42:23,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-24 15:42:23,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:42:25,385 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 15:42:25,990 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 15:42:26,425 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 15:42:26,846 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 15:42:28,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:42:28,050 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 43 treesize of output 41 [2023-12-24 15:42:28,189 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 50 treesize of output 41 [2023-12-24 15:42:29,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:42:29,014 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 114 treesize of output 82 [2023-12-24 15:42:29,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:42:29,022 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 113 treesize of output 85 [2023-12-24 15:42:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 211 proven. 274 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-24 15:42:29,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:42:30,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:42:30,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266790604] [2023-12-24 15:42:30,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266790604] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:42:30,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1997282700] [2023-12-24 15:42:30,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:42:30,659 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:42:30,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:42:30,660 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 15:42:30,661 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 15:42:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:42:31,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-24 15:42:31,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:42:33,961 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 15:42:34,748 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 15:42:35,201 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 15:42:35,652 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 15:42:37,361 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 26 treesize of output 25 [2023-12-24 15:42:37,542 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 58 treesize of output 45 [2023-12-24 15:42:38,661 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 122 treesize of output 86 [2023-12-24 15:42:38,665 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 120 treesize of output 92 [2023-12-24 15:42:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 153 proven. 274 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-24 15:42:38,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:42:39,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1997282700] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:42:39,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:42:39,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 45 [2023-12-24 15:42:39,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097238747] [2023-12-24 15:42:39,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:42:39,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-24 15:42:39,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:42:39,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-24 15:42:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=2573, Unknown=0, NotChecked=0, Total=2970 [2023-12-24 15:42:39,203 INFO L87 Difference]: Start difference. First operand 426 states and 574 transitions. Second operand has 46 states, 40 states have (on average 3.475) internal successors, (139), 40 states have internal predecessors, (139), 13 states have call successors, (40), 10 states have call predecessors, (40), 13 states have return successors, (40), 11 states have call predecessors, (40), 13 states have call successors, (40) [2023-12-24 15:43:01,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:43:01,652 INFO L93 Difference]: Finished difference Result 1213 states and 1592 transitions. [2023-12-24 15:43:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-24 15:43:01,653 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 40 states have (on average 3.475) internal successors, (139), 40 states have internal predecessors, (139), 13 states have call successors, (40), 10 states have call predecessors, (40), 13 states have return successors, (40), 11 states have call predecessors, (40), 13 states have call successors, (40) Word has length 155 [2023-12-24 15:43:01,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:43:01,656 INFO L225 Difference]: With dead ends: 1213 [2023-12-24 15:43:01,656 INFO L226 Difference]: Without dead ends: 942 [2023-12-24 15:43:01,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3464 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=2703, Invalid=11577, Unknown=0, NotChecked=0, Total=14280 [2023-12-24 15:43:01,661 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 3926 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 1133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3926 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 4589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1133 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:43:01,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3926 Valid, 1855 Invalid, 4589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1133 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-12-24 15:43:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-12-24 15:43:01,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 382. [2023-12-24 15:43:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 325 states have (on average 1.3107692307692307) internal successors, (426), 325 states have internal predecessors, (426), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 15:43:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 506 transitions. [2023-12-24 15:43:01,760 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 506 transitions. Word has length 155 [2023-12-24 15:43:01,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:43:01,760 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 506 transitions. [2023-12-24 15:43:01,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 40 states have (on average 3.475) internal successors, (139), 40 states have internal predecessors, (139), 13 states have call successors, (40), 10 states have call predecessors, (40), 13 states have return successors, (40), 11 states have call predecessors, (40), 13 states have call successors, (40) [2023-12-24 15:43:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 506 transitions. [2023-12-24 15:43:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 15:43:01,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:43:01,762 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:01,772 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 15:43:01,976 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 15:43:02,169 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 15:43:02,169 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:43:02,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:43:02,170 INFO L85 PathProgramCache]: Analyzing trace with hash 920465846, now seen corresponding path program 1 times [2023-12-24 15:43:02,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:43:02,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187484866] [2023-12-24 15:43:02,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:43:02,170 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 15:43:02,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:43:02,172 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 15:43:02,175 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 15:43:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:43:02,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 15:43:02,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:43:03,332 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 15:43:03,634 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 15:43:03,998 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 15:43:04,342 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 15:43:04,798 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 39 treesize of output 44 [2023-12-24 15:43:05,704 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 58 treesize of output 62 [2023-12-24 15:43:06,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:43:06,028 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 71 treesize of output 39 [2023-12-24 15:43:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 315 proven. 274 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-24 15:43:06,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:43:06,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:43:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187484866] [2023-12-24 15:43:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187484866] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:43:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1469230029] [2023-12-24 15:43:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:43:06,711 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:43:06,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:43:06,712 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:43:06,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-24 15:43:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:43:07,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 15:43:07,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:43:08,344 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 15:43:08,962 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 15:43:09,469 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 15:43:09,896 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 41 treesize of output 28 [2023-12-24 15:43:10,726 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 47 treesize of output 48 [2023-12-24 15:43:12,004 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 66 treesize of output 66 [2023-12-24 15:43:12,479 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 79 treesize of output 43 [2023-12-24 15:43:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 350 proven. 274 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 15:43:12,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:43:12,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1469230029] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:43:12,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:43:12,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2023-12-24 15:43:12,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667708672] [2023-12-24 15:43:12,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:43:12,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 15:43:12,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:43:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 15:43:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1572, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 15:43:12,615 INFO L87 Difference]: Start difference. First operand 382 states and 506 transitions. Second operand has 36 states, 32 states have (on average 4.1875) internal successors, (134), 33 states have internal predecessors, (134), 13 states have call successors, (40), 9 states have call predecessors, (40), 13 states have return successors, (40), 11 states have call predecessors, (40), 13 states have call successors, (40) [2023-12-24 15:43:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:43:17,212 INFO L93 Difference]: Finished difference Result 719 states and 946 transitions. [2023-12-24 15:43:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 15:43:17,217 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 4.1875) internal successors, (134), 33 states have internal predecessors, (134), 13 states have call successors, (40), 9 states have call predecessors, (40), 13 states have return successors, (40), 11 states have call predecessors, (40), 13 states have call successors, (40) Word has length 155 [2023-12-24 15:43:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:43:17,219 INFO L225 Difference]: With dead ends: 719 [2023-12-24 15:43:17,219 INFO L226 Difference]: Without dead ends: 496 [2023-12-24 15:43:17,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 328 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=643, Invalid=3139, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 15:43:17,220 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 831 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:43:17,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 891 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-24 15:43:17,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-12-24 15:43:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 386. [2023-12-24 15:43:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 329 states have (on average 1.3069908814589666) internal successors, (430), 329 states have internal predecessors, (430), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 15:43:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 510 transitions. [2023-12-24 15:43:17,316 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 510 transitions. Word has length 155 [2023-12-24 15:43:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:43:17,316 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 510 transitions. [2023-12-24 15:43:17,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 4.1875) internal successors, (134), 33 states have internal predecessors, (134), 13 states have call successors, (40), 9 states have call predecessors, (40), 13 states have return successors, (40), 11 states have call predecessors, (40), 13 states have call successors, (40) [2023-12-24 15:43:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 510 transitions. [2023-12-24 15:43:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 15:43:17,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:43:17,318 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:17,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-24 15:43:17,531 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 15:43:17,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 15:43:17,726 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:43:17,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:43:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1522376546, now seen corresponding path program 1 times [2023-12-24 15:43:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:43:17,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816444801] [2023-12-24 15:43:17,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:43:17,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:43:17,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:43:17,728 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:43:17,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 15:43:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:43:17,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 15:43:17,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:43:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 18 proven. 130 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:43:18,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:43:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:43:18,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:43:18,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816444801] [2023-12-24 15:43:18,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816444801] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:43:18,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:43:18,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 15:43:18,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739044294] [2023-12-24 15:43:18,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:43:18,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:43:18,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:43:18,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:43:18,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:43:18,334 INFO L87 Difference]: Start difference. First operand 386 states and 510 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:43:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:43:18,477 INFO L93 Difference]: Finished difference Result 638 states and 842 transitions. [2023-12-24 15:43:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:43:18,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2023-12-24 15:43:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:43:18,480 INFO L225 Difference]: With dead ends: 638 [2023-12-24 15:43:18,480 INFO L226 Difference]: Without dead ends: 411 [2023-12-24 15:43:18,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:43:18,481 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 57 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:43:18,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 586 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:43:18,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-24 15:43:18,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 383. [2023-12-24 15:43:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 326 states have (on average 1.303680981595092) internal successors, (425), 326 states have internal predecessors, (425), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 15:43:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 505 transitions. [2023-12-24 15:43:18,572 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 505 transitions. Word has length 155 [2023-12-24 15:43:18,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:43:18,574 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 505 transitions. [2023-12-24 15:43:18,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:43:18,574 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 505 transitions. [2023-12-24 15:43:18,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 15:43:18,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:43:18,576 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:18,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 15:43:18,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:43:18,789 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:43:18,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:43:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1762087272, now seen corresponding path program 1 times [2023-12-24 15:43:18,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:43:18,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596306486] [2023-12-24 15:43:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:43:18,790 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 15:43:18,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:43:18,791 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 15:43:18,792 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 15:43:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:43:19,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 15:43:19,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:43:19,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:43:19,096 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 33 treesize of output 29 [2023-12-24 15:43:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:43:19,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:43:19,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:43:19,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596306486] [2023-12-24 15:43:19,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596306486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:43:19,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:43:19,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:43:19,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605744571] [2023-12-24 15:43:19,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:43:19,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:43:19,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:43:19,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:43:19,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:43:19,124 INFO L87 Difference]: Start difference. First operand 383 states and 505 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:43:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:43:19,574 INFO L93 Difference]: Finished difference Result 633 states and 835 transitions. [2023-12-24 15:43:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 15:43:19,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2023-12-24 15:43:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:43:19,577 INFO L225 Difference]: With dead ends: 633 [2023-12-24 15:43:19,577 INFO L226 Difference]: Without dead ends: 391 [2023-12-24 15:43:19,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:43:19,578 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 39 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:43:19,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 412 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:43:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-24 15:43:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 387. [2023-12-24 15:43:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 329 states have (on average 1.2948328267477203) internal successors, (426), 329 states have internal predecessors, (426), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 15:43:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 506 transitions. [2023-12-24 15:43:19,668 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 506 transitions. Word has length 155 [2023-12-24 15:43:19,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:43:19,668 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 506 transitions. [2023-12-24 15:43:19,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:43:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 506 transitions. [2023-12-24 15:43:19,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 15:43:19,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:43:19,671 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:19,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 15:43:19,881 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 15:43:19,882 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:43:19,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:43:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1700047658, now seen corresponding path program 1 times [2023-12-24 15:43:19,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:43:19,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278224080] [2023-12-24 15:43:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:43:19,883 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 15:43:19,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:43:19,884 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 15:43:19,885 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 (19)] Waiting until timeout for monitored process [2023-12-24 15:43:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:43:20,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 15:43:20,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:43:21,495 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 15:43:21,933 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 15:43:22,389 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 42 treesize of output 29 [2023-12-24 15:43:23,113 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2023-12-24 15:43:23,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:43:23,301 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 59 treesize of output 35 [2023-12-24 15:43:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 211 proven. 259 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-12-24 15:43:23,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:43:23,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:43:23,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278224080] [2023-12-24 15:43:23,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278224080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:43:23,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1768115961] [2023-12-24 15:43:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:43:23,733 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:43:23,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:43:23,734 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 15:43:23,737 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 15:43:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:43:24,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-24 15:43:24,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:43:25,782 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 15:43:26,500 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 15:43:27,287 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 32 treesize of output 23 [2023-12-24 15:43:28,161 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 41 treesize of output 35 [2023-12-24 15:43:29,255 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 47 treesize of output 55 [2023-12-24 15:43:31,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 80 [2023-12-24 15:43:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 348 proven. 274 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-24 15:43:31,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:43:41,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1768115961] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:43:41,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:43:41,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23] total 38 [2023-12-24 15:43:41,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241677476] [2023-12-24 15:43:41,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:43:41,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-24 15:43:41,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:43:41,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-24 15:43:41,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=2421, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 15:43:41,577 INFO L87 Difference]: Start difference. First operand 387 states and 506 transitions. Second operand has 39 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 35 states have internal predecessors, (138), 14 states have call successors, (40), 9 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-24 15:44:07,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:44:07,891 INFO L93 Difference]: Finished difference Result 861 states and 1119 transitions. [2023-12-24 15:44:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-24 15:44:07,892 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 35 states have internal predecessors, (138), 14 states have call successors, (40), 9 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) Word has length 155 [2023-12-24 15:44:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:44:07,894 INFO L225 Difference]: With dead ends: 861 [2023-12-24 15:44:07,894 INFO L226 Difference]: Without dead ends: 637 [2023-12-24 15:44:07,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2732 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=1738, Invalid=8362, Unknown=0, NotChecked=0, Total=10100 [2023-12-24 15:44:07,898 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1400 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:44:07,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 1804 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2023-12-24 15:44:07,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-12-24 15:44:07,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 405. [2023-12-24 15:44:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 347 states have (on average 1.2997118155619596) internal successors, (451), 347 states have internal predecessors, (451), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 15:44:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 531 transitions. [2023-12-24 15:44:07,989 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 531 transitions. Word has length 155 [2023-12-24 15:44:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:44:07,990 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 531 transitions. [2023-12-24 15:44:07,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 35 states have internal predecessors, (138), 14 states have call successors, (40), 9 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-24 15:44:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 531 transitions. [2023-12-24 15:44:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 15:44:07,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:44:07,991 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:07,998 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 15:44:08,199 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 (19)] Ended with exit code 0 [2023-12-24 15:44:08,393 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 15:44:08,393 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:44:08,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:44:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1315055960, now seen corresponding path program 1 times [2023-12-24 15:44:08,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:44:08,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455983761] [2023-12-24 15:44:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:44:08,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:44:08,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:44:08,395 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 15:44:08,397 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 15:44:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:44:08,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 15:44:08,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:44:10,420 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 15:44:11,101 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 15:44:11,829 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 15:44:12,914 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 39 treesize of output 37 [2023-12-24 15:44:13,856 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 50 treesize of output 40 [2023-12-24 15:44:15,773 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 48 treesize of output 49 [2023-12-24 15:44:16,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:44:16,422 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 58 treesize of output 34 [2023-12-24 15:44:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 319 proven. 280 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-24 15:44:16,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:44:17,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:44:17,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455983761] [2023-12-24 15:44:17,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455983761] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:44:17,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [831767714] [2023-12-24 15:44:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:44:17,562 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:44:17,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:44:17,563 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 15:44:17,564 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 15:44:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:44:18,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 15:44:18,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:44:20,667 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 15:44:22,249 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 15:44:23,605 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 15:44:24,710 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 41 treesize of output 28 [2023-12-24 15:44:26,502 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 50 treesize of output 40 [2023-12-24 15:44:30,304 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 73 treesize of output 62 [2023-12-24 15:44:31,889 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 86 treesize of output 46 [2023-12-24 15:44:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 350 proven. 274 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 15:44:31,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:44:34,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [831767714] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:44:34,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:44:34,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 38 [2023-12-24 15:44:34,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965388029] [2023-12-24 15:44:34,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:44:34,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-24 15:44:34,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:44:34,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-24 15:44:34,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=2402, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 15:44:34,962 INFO L87 Difference]: Start difference. First operand 405 states and 531 transitions. Second operand has 39 states, 35 states have (on average 3.9714285714285715) internal successors, (139), 36 states have internal predecessors, (139), 14 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-24 15:44:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:44:50,546 INFO L93 Difference]: Finished difference Result 763 states and 996 transitions. [2023-12-24 15:44:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-24 15:44:50,547 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 3.9714285714285715) internal successors, (139), 36 states have internal predecessors, (139), 14 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) Word has length 155 [2023-12-24 15:44:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:44:50,548 INFO L225 Difference]: With dead ends: 763 [2023-12-24 15:44:50,549 INFO L226 Difference]: Without dead ends: 521 [2023-12-24 15:44:50,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 319 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=1075, Invalid=5405, Unknown=0, NotChecked=0, Total=6480 [2023-12-24 15:44:50,553 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1165 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:44:50,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1390 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-24 15:44:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-12-24 15:44:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 405. [2023-12-24 15:44:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 347 states have (on average 1.2997118155619596) internal successors, (451), 347 states have internal predecessors, (451), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 15:44:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 531 transitions. [2023-12-24 15:44:50,677 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 531 transitions. Word has length 155 [2023-12-24 15:44:50,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:44:50,677 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 531 transitions. [2023-12-24 15:44:50,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 3.9714285714285715) internal successors, (139), 36 states have internal predecessors, (139), 14 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-24 15:44:50,678 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 531 transitions. [2023-12-24 15:44:50,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 15:44:50,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:44:50,679 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:50,691 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 15:44:50,896 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 15:44:51,087 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 15:44:51,088 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:44:51,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:44:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash 718321338, now seen corresponding path program 1 times [2023-12-24 15:44:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:44:51,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393263338] [2023-12-24 15:44:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:44:51,089 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 15:44:51,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:44:51,090 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 15:44:51,090 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 15:44:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:44:51,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 15:44:51,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:44:51,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:44:51,483 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 33 treesize of output 29 [2023-12-24 15:44:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:44:51,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:44:51,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:44:51,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393263338] [2023-12-24 15:44:51,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393263338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:44:51,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:44:51,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:44:51,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499596375] [2023-12-24 15:44:51,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:44:51,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:44:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:44:51,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:44:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:44:51,588 INFO L87 Difference]: Start difference. First operand 405 states and 531 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:44:52,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:44:52,946 INFO L93 Difference]: Finished difference Result 803 states and 1048 transitions. [2023-12-24 15:44:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 15:44:52,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2023-12-24 15:44:52,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:44:52,948 INFO L225 Difference]: With dead ends: 803 [2023-12-24 15:44:52,948 INFO L226 Difference]: Without dead ends: 561 [2023-12-24 15:44:52,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:44:52,950 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 162 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:44:52,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 463 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 15:44:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-12-24 15:44:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 474. [2023-12-24 15:44:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 410 states have (on average 1.2853658536585366) internal successors, (527), 411 states have internal predecessors, (527), 45 states have call successors, (45), 18 states have call predecessors, (45), 18 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-24 15:44:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 617 transitions. [2023-12-24 15:44:53,082 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 617 transitions. Word has length 155 [2023-12-24 15:44:53,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:44:53,082 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 617 transitions. [2023-12-24 15:44:53,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:44:53,083 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 617 transitions. [2023-12-24 15:44:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 15:44:53,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:44:53,084 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:53,095 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 15:44:53,292 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 15:44:53,292 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:44:53,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:44:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash -292795912, now seen corresponding path program 1 times [2023-12-24 15:44:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:44:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477045821] [2023-12-24 15:44:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:44:53,293 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 15:44:53,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:44:53,294 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 15:44:53,295 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 15:44:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:44:53,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 15:44:53,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:44:55,610 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 15:44:56,589 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 15:44:57,780 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 41 treesize of output 28 [2023-12-24 15:44:59,094 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 47 treesize of output 48 [2023-12-24 15:45:00,125 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 58 treesize of output 51 [2023-12-24 15:45:02,449 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 66 treesize of output 66 [2023-12-24 15:45:03,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:45:03,311 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 79 treesize of output 43 [2023-12-24 15:45:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 339 proven. 280 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-12-24 15:45:03,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:45:04,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:45:04,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477045821] [2023-12-24 15:45:04,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477045821] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:45:04,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [234354794] [2023-12-24 15:45:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:45:04,966 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:45:04,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:45:04,967 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 15:45:04,968 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 15:45:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:45:05,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 15:45:05,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:45:08,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:45:10,123 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 15:45:11,728 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 15:45:12,608 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 15:45:14,576 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 39 treesize of output 44 [2023-12-24 15:45:18,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 82 [2023-12-24 15:45:19,987 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 0 case distinctions, treesize of input 96 treesize of output 52 [2023-12-24 15:45:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 276 proven. 274 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-24 15:45:20,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:45:26,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [234354794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:45:26,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:45:26,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2023-12-24 15:45:26,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168668176] [2023-12-24 15:45:26,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:45:26,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-24 15:45:26,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:45:26,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-24 15:45:26,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=2420, Unknown=1, NotChecked=0, Total=2756 [2023-12-24 15:45:26,315 INFO L87 Difference]: Start difference. First operand 474 states and 617 transitions. Second operand has 39 states, 35 states have (on average 3.742857142857143) internal successors, (131), 34 states have internal predecessors, (131), 12 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) [2023-12-24 15:45:46,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:45:46,068 INFO L93 Difference]: Finished difference Result 910 states and 1179 transitions. [2023-12-24 15:45:46,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-24 15:45:46,069 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 3.742857142857143) internal successors, (131), 34 states have internal predecessors, (131), 12 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) Word has length 155 [2023-12-24 15:45:46,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:45:46,071 INFO L225 Difference]: With dead ends: 910 [2023-12-24 15:45:46,071 INFO L226 Difference]: Without dead ends: 599 [2023-12-24 15:45:46,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 319 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1993 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=1187, Invalid=6122, Unknown=1, NotChecked=0, Total=7310 [2023-12-24 15:45:46,072 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1042 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:45:46,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 1824 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-12-24 15:45:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-12-24 15:45:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 474. [2023-12-24 15:45:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 410 states have (on average 1.2804878048780488) internal successors, (525), 411 states have internal predecessors, (525), 45 states have call successors, (45), 18 states have call predecessors, (45), 18 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-24 15:45:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 615 transitions. [2023-12-24 15:45:46,203 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 615 transitions. Word has length 155 [2023-12-24 15:45:46,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:45:46,203 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 615 transitions. [2023-12-24 15:45:46,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 3.742857142857143) internal successors, (131), 34 states have internal predecessors, (131), 12 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) [2023-12-24 15:45:46,204 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 615 transitions. [2023-12-24 15:45:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 15:45:46,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:45:46,205 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:46,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 15:45:46,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-12-24 15:45:46,613 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 15:45:46,613 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:45:46,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:45:46,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1880155217, now seen corresponding path program 1 times [2023-12-24 15:45:46,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:45:46,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093809259] [2023-12-24 15:45:46,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:45:46,615 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 15:45:46,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:45:46,616 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 15:45:46,617 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 15:45:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:45:46,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 15:45:47,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:45:50,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:45:51,332 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 15:45:53,471 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2023-12-24 15:45:54,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:45:54,193 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 67 treesize of output 35 [2023-12-24 15:45:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 108 proven. 213 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2023-12-24 15:45:54,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:45:59,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:45:59,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093809259] [2023-12-24 15:45:59,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093809259] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:45:59,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [213065596] [2023-12-24 15:45:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:45:59,907 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:45:59,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:45:59,907 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 15:45:59,908 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 15:46:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:00,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 15:46:00,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:04,812 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 15:46:06,442 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 15:46:10,132 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 54 treesize of output 44 [2023-12-24 15:46:11,392 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 75 treesize of output 39 [2023-12-24 15:46:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 178 proven. 213 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2023-12-24 15:46:11,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:46:13,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [213065596] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:46:13,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:46:13,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 36 [2023-12-24 15:46:13,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746902937] [2023-12-24 15:46:13,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:46:13,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-24 15:46:13,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:13,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-24 15:46:13,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=2237, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 15:46:13,623 INFO L87 Difference]: Start difference. First operand 474 states and 615 transitions. Second operand has 37 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 34 states have internal predecessors, (134), 11 states have call successors, (40), 9 states have call predecessors, (40), 11 states have return successors, (40), 7 states have call predecessors, (40), 11 states have call successors, (40) [2023-12-24 15:46:27,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:27,964 INFO L93 Difference]: Finished difference Result 997 states and 1285 transitions. [2023-12-24 15:46:27,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 15:46:27,965 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 34 states have internal predecessors, (134), 11 states have call successors, (40), 9 states have call predecessors, (40), 11 states have return successors, (40), 7 states have call predecessors, (40), 11 states have call successors, (40) Word has length 157 [2023-12-24 15:46:27,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:27,967 INFO L225 Difference]: With dead ends: 997 [2023-12-24 15:46:27,967 INFO L226 Difference]: Without dead ends: 686 [2023-12-24 15:46:27,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 376 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=1090, Invalid=4916, Unknown=0, NotChecked=0, Total=6006 [2023-12-24 15:46:27,969 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 729 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 2781 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:27,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1622 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2781 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-12-24 15:46:27,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-24 15:46:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 520. [2023-12-24 15:46:28,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 456 states have (on average 1.2916666666666667) internal successors, (589), 457 states have internal predecessors, (589), 45 states have call successors, (45), 18 states have call predecessors, (45), 18 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-24 15:46:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 679 transitions. [2023-12-24 15:46:28,109 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 679 transitions. Word has length 157 [2023-12-24 15:46:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:28,109 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 679 transitions. [2023-12-24 15:46:28,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 34 states have internal predecessors, (134), 11 states have call successors, (40), 9 states have call predecessors, (40), 11 states have return successors, (40), 7 states have call predecessors, (40), 11 states have call successors, (40) [2023-12-24 15:46:28,110 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 679 transitions. [2023-12-24 15:46:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 15:46:28,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:28,111 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:28,120 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 15:46:28,335 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 15:46:28,530 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 15:46:28,531 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:28,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash 869037967, now seen corresponding path program 1 times [2023-12-24 15:46:28,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:28,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806161384] [2023-12-24 15:46:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:28,532 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 15:46:28,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:28,533 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 15:46:28,534 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 15:46:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:28,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 15:46:28,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:28,912 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:46:28,912 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 32 treesize of output 25 [2023-12-24 15:46:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:46:28,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:46:28,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:28,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806161384] [2023-12-24 15:46:29,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806161384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:46:29,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:46:29,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:46:29,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578543851] [2023-12-24 15:46:29,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:29,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:46:29,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:29,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:46:29,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:46:29,001 INFO L87 Difference]: Start difference. First operand 520 states and 679 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:46:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:29,851 INFO L93 Difference]: Finished difference Result 945 states and 1231 transitions. [2023-12-24 15:46:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:46:29,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-24 15:46:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:29,854 INFO L225 Difference]: With dead ends: 945 [2023-12-24 15:46:29,855 INFO L226 Difference]: Without dead ends: 606 [2023-12-24 15:46:29,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:46:29,856 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 160 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:29,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 490 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 15:46:29,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-12-24 15:46:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 506. [2023-12-24 15:46:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 442 states have (on average 1.2918552036199096) internal successors, (571), 443 states have internal predecessors, (571), 45 states have call successors, (45), 18 states have call predecessors, (45), 18 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-24 15:46:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 661 transitions. [2023-12-24 15:46:29,989 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 661 transitions. Word has length 157 [2023-12-24 15:46:29,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:29,989 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 661 transitions. [2023-12-24 15:46:29,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:46:29,990 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 661 transitions. [2023-12-24 15:46:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 15:46:29,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:29,991 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:30,003 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 (28)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:30,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:30,199 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:30,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:30,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1370682127, now seen corresponding path program 1 times [2023-12-24 15:46:30,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:30,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243116952] [2023-12-24 15:46:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:30,200 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 15:46:30,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:30,201 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:30,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 15:46:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:30,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 15:46:30,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:30,601 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:46:30,601 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 32 treesize of output 25 [2023-12-24 15:46:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:46:30,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:46:30,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:30,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243116952] [2023-12-24 15:46:30,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243116952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:46:30,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:46:30,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:46:30,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321504098] [2023-12-24 15:46:30,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:30,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:46:30,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:30,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:46:30,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:46:30,661 INFO L87 Difference]: Start difference. First operand 506 states and 661 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:46:31,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:31,345 INFO L93 Difference]: Finished difference Result 807 states and 1055 transitions. [2023-12-24 15:46:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:46:31,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-24 15:46:31,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:31,347 INFO L225 Difference]: With dead ends: 807 [2023-12-24 15:46:31,347 INFO L226 Difference]: Without dead ends: 464 [2023-12-24 15:46:31,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:46:31,348 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 18 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:31,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 421 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 15:46:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-12-24 15:46:31,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2023-12-24 15:46:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 400 states have (on average 1.2775) internal successors, (511), 401 states have internal predecessors, (511), 45 states have call successors, (45), 18 states have call predecessors, (45), 18 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-24 15:46:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 601 transitions. [2023-12-24 15:46:31,493 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 601 transitions. Word has length 157 [2023-12-24 15:46:31,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:31,493 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 601 transitions. [2023-12-24 15:46:31,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:46:31,494 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 601 transitions. [2023-12-24 15:46:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 15:46:31,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:31,495 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:31,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:31,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:31,703 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:31,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:31,704 INFO L85 PathProgramCache]: Analyzing trace with hash 702401998, now seen corresponding path program 1 times [2023-12-24 15:46:31,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:31,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573378113] [2023-12-24 15:46:31,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:31,705 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 15:46:31,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:31,706 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 15:46:31,741 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 15:46:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:32,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:46:32,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:46:32,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:46:32,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573378113] [2023-12-24 15:46:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573378113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:46:32,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:46:32,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:46:32,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582690189] [2023-12-24 15:46:32,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:32,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:46:32,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:32,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:46:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:46:32,098 INFO L87 Difference]: Start difference. First operand 464 states and 601 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:46:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:32,359 INFO L93 Difference]: Finished difference Result 781 states and 1016 transitions. [2023-12-24 15:46:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:46:32,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-24 15:46:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:32,361 INFO L225 Difference]: With dead ends: 781 [2023-12-24 15:46:32,361 INFO L226 Difference]: Without dead ends: 480 [2023-12-24 15:46:32,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:46:32,363 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 27 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:32,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 504 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:46:32,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-12-24 15:46:32,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 470. [2023-12-24 15:46:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 406 states have (on average 1.2733990147783252) internal successors, (517), 407 states have internal predecessors, (517), 45 states have call successors, (45), 18 states have call predecessors, (45), 18 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-24 15:46:32,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 607 transitions. [2023-12-24 15:46:32,505 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 607 transitions. Word has length 157 [2023-12-24 15:46:32,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:32,505 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 607 transitions. [2023-12-24 15:46:32,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:46:32,505 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 607 transitions. [2023-12-24 15:46:32,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 15:46:32,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:32,507 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:32,525 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 15:46:32,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:32,718 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:32,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:32,718 INFO L85 PathProgramCache]: Analyzing trace with hash -527183151, now seen corresponding path program 1 times [2023-12-24 15:46:32,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095371169] [2023-12-24 15:46:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:32,719 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 15:46:32,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:32,721 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:32,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 15:46:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:33,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 15:46:33,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:36,417 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 15:46:37,150 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 15:46:37,777 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 15:46:39,529 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2023-12-24 15:46:40,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:46:40,336 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 62 treesize of output 34 [2023-12-24 15:46:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 192 proven. 256 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-24 15:46:40,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:46:42,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:42,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095371169] [2023-12-24 15:46:42,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095371169] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:46:42,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [418086716] [2023-12-24 15:46:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:42,788 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:46:42,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:46:42,789 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:46:42,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-24 15:46:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:43,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 15:46:43,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:48,674 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 15:46:49,759 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 15:46:51,876 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 41 treesize of output 28 [2023-12-24 15:46:56,971 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 78 treesize of output 63 [2023-12-24 15:46:58,957 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 96 treesize of output 52 [2023-12-24 15:46:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 274 proven. 213 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2023-12-24 15:46:59,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:13,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [418086716] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:13,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:47:13,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24] total 34 [2023-12-24 15:47:13,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162052869] [2023-12-24 15:47:13,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:47:13,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-24 15:47:13,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-24 15:47:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=2840, Unknown=1, NotChecked=0, Total=3306 [2023-12-24 15:47:13,369 INFO L87 Difference]: Start difference. First operand 470 states and 607 transitions. Second operand has 35 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 10 states have call successors, (40), 9 states have call predecessors, (40), 10 states have return successors, (40), 8 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-24 15:47:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:36,339 INFO L93 Difference]: Finished difference Result 938 states and 1201 transitions. [2023-12-24 15:47:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 15:47:36,340 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 10 states have call successors, (40), 9 states have call predecessors, (40), 10 states have return successors, (40), 8 states have call predecessors, (40), 10 states have call successors, (40) Word has length 157 [2023-12-24 15:47:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:36,341 INFO L225 Difference]: With dead ends: 938 [2023-12-24 15:47:36,341 INFO L226 Difference]: Without dead ends: 631 [2023-12-24 15:47:36,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2016 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=1366, Invalid=6465, Unknown=1, NotChecked=0, Total=7832 [2023-12-24 15:47:36,343 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 832 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 3035 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 3035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:36,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1942 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 3035 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-12-24 15:47:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-12-24 15:47:36,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 472. [2023-12-24 15:47:36,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 408 states have (on average 1.2720588235294117) internal successors, (519), 409 states have internal predecessors, (519), 45 states have call successors, (45), 18 states have call predecessors, (45), 18 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-24 15:47:36,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 609 transitions. [2023-12-24 15:47:36,458 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 609 transitions. Word has length 157 [2023-12-24 15:47:36,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:36,458 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 609 transitions. [2023-12-24 15:47:36,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 10 states have call successors, (40), 9 states have call predecessors, (40), 10 states have return successors, (40), 8 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-24 15:47:36,458 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 609 transitions. [2023-12-24 15:47:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 15:47:36,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:36,459 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:36,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:36,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:36,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:47:36,868 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:36,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:36,869 INFO L85 PathProgramCache]: Analyzing trace with hash -933624619, now seen corresponding path program 1 times [2023-12-24 15:47:36,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:36,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115966606] [2023-12-24 15:47:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:36,869 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 15:47:36,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:36,870 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 15:47:36,871 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 15:47:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:37,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 15:47:37,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:37,870 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 15:47:42,025 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 103 treesize of output 59 [2023-12-24 15:47:42,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:47:42,887 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 173 treesize of output 77 [2023-12-24 15:47:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2023-12-24 15:47:43,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:44,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115966606] [2023-12-24 15:47:44,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115966606] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [975027172] [2023-12-24 15:47:44,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:44,308 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:47:44,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:47:44,309 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 15:47:44,310 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 15:47:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:45,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 15:47:45,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:45,869 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 15:47:51,047 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 103 treesize of output 59 [2023-12-24 15:47:52,156 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 173 treesize of output 77 [2023-12-24 15:47:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2023-12-24 15:47:52,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:53,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [975027172] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:53,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:47:53,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-24 15:47:53,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136379017] [2023-12-24 15:47:53,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:47:53,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 15:47:53,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:53,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 15:47:53,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-12-24 15:47:53,522 INFO L87 Difference]: Start difference. First operand 472 states and 609 transitions. Second operand has 16 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-24 15:47:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:55,961 INFO L93 Difference]: Finished difference Result 945 states and 1213 transitions. [2023-12-24 15:47:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 15:47:55,964 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 159 [2023-12-24 15:47:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:55,966 INFO L225 Difference]: With dead ends: 945 [2023-12-24 15:47:55,966 INFO L226 Difference]: Without dead ends: 943 [2023-12-24 15:47:55,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 370 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2023-12-24 15:47:55,967 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 469 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:55,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 871 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 15:47:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2023-12-24 15:47:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 925. [2023-12-24 15:47:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 798 states have (on average 1.2669172932330828) internal successors, (1011), 802 states have internal predecessors, (1011), 88 states have call successors, (88), 38 states have call predecessors, (88), 38 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-24 15:47:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1187 transitions. [2023-12-24 15:47:56,321 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1187 transitions. Word has length 159 [2023-12-24 15:47:56,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:56,321 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1187 transitions. [2023-12-24 15:47:56,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-24 15:47:56,322 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1187 transitions. [2023-12-24 15:47:56,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 15:47:56,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:56,323 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:56,330 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 15:47:56,530 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 15:47:56,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:56,724 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:56,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash -933565037, now seen corresponding path program 1 times [2023-12-24 15:47:56,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:56,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287791681] [2023-12-24 15:47:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:56,725 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 15:47:56,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:56,726 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:56,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 15:47:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:57,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 15:47:57,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:57,036 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 15:47:57,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 15:47:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:47:57,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:47:57,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:57,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287791681] [2023-12-24 15:47:57,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287791681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:47:57,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:47:57,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:47:57,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323822892] [2023-12-24 15:47:57,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:57,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:47:57,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:47:57,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:47:57,222 INFO L87 Difference]: Start difference. First operand 925 states and 1187 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:47:57,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:57,896 INFO L93 Difference]: Finished difference Result 2027 states and 2617 transitions. [2023-12-24 15:47:57,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 15:47:57,897 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 15:47:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:57,900 INFO L225 Difference]: With dead ends: 2027 [2023-12-24 15:47:57,900 INFO L226 Difference]: Without dead ends: 1415 [2023-12-24 15:47:57,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-24 15:47:57,901 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 60 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:57,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 686 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:47:57,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2023-12-24 15:47:58,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1405. [2023-12-24 15:47:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1260 states have (on average 1.2817460317460319) internal successors, (1615), 1270 states have internal predecessors, (1615), 100 states have call successors, (100), 44 states have call predecessors, (100), 44 states have return successors, (100), 90 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 15:47:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 1815 transitions. [2023-12-24 15:47:58,216 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 1815 transitions. Word has length 159 [2023-12-24 15:47:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:58,216 INFO L495 AbstractCegarLoop]: Abstraction has 1405 states and 1815 transitions. [2023-12-24 15:47:58,216 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:47:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 1815 transitions. [2023-12-24 15:47:58,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 15:47:58,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:58,218 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:58,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:58,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:58,427 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:58,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:58,427 INFO L85 PathProgramCache]: Analyzing trace with hash 841442325, now seen corresponding path program 1 times [2023-12-24 15:47:58,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:58,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889220382] [2023-12-24 15:47:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:58,428 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 15:47:58,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:58,429 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:58,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 15:47:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:58,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 15:47:58,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:05,731 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2023-12-24 15:48:05,732 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 50 treesize of output 45 [2023-12-24 15:48:08,729 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:48:08,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 44 [2023-12-24 15:48:08,765 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-24 15:48:08,765 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 50 treesize of output 34 [2023-12-24 15:48:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 76 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 15:48:08,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:48:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:48:42,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:48:42,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889220382] [2023-12-24 15:48:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889220382] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:48:42,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:48:42,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20] total 30 [2023-12-24 15:48:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821350922] [2023-12-24 15:48:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:48:42,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 15:48:42,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:48:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 15:48:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=673, Unknown=9, NotChecked=0, Total=870 [2023-12-24 15:48:42,439 INFO L87 Difference]: Start difference. First operand 1405 states and 1815 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:48:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:48:46,784 INFO L93 Difference]: Finished difference Result 3435 states and 4331 transitions. [2023-12-24 15:48:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-24 15:48:46,785 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 15:48:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:48:46,790 INFO L225 Difference]: With dead ends: 3435 [2023-12-24 15:48:46,790 INFO L226 Difference]: Without dead ends: 2423 [2023-12-24 15:48:46,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=555, Invalid=1692, Unknown=9, NotChecked=0, Total=2256 [2023-12-24 15:48:46,792 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 556 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:48:46,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 912 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 15:48:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2023-12-24 15:48:47,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 1467. [2023-12-24 15:48:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 1331 states have (on average 1.2824943651389933) internal successors, (1707), 1338 states have internal predecessors, (1707), 94 states have call successors, (94), 41 states have call predecessors, (94), 41 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-24 15:48:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 1895 transitions. [2023-12-24 15:48:47,169 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 1895 transitions. Word has length 159 [2023-12-24 15:48:47,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:48:47,169 INFO L495 AbstractCegarLoop]: Abstraction has 1467 states and 1895 transitions. [2023-12-24 15:48:47,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:48:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 1895 transitions. [2023-12-24 15:48:47,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 15:48:47,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:48:47,171 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:47,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-24 15:48:47,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:47,380 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:48:47,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:48:47,381 INFO L85 PathProgramCache]: Analyzing trace with hash 525375911, now seen corresponding path program 1 times [2023-12-24 15:48:47,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:48:47,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117733464] [2023-12-24 15:48:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:48:47,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:47,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:48:47,382 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:48:47,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-24 15:48:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:48:47,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 15:48:47,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:47,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:48:47,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 15:48:47,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 15:48:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:48:47,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:48:47,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:48:47,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117733464] [2023-12-24 15:48:47,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117733464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:48:47,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:48:47,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:48:47,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857407811] [2023-12-24 15:48:47,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:48:47,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:48:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:48:47,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:48:47,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:48:47,990 INFO L87 Difference]: Start difference. First operand 1467 states and 1895 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:48:48,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:48:48,899 INFO L93 Difference]: Finished difference Result 2843 states and 3634 transitions. [2023-12-24 15:48:48,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:48:48,900 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 15:48:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:48:48,904 INFO L225 Difference]: With dead ends: 2843 [2023-12-24 15:48:48,904 INFO L226 Difference]: Without dead ends: 1777 [2023-12-24 15:48:48,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 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 15:48:48,906 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 162 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:48:48,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 487 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 15:48:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2023-12-24 15:48:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1689. [2023-12-24 15:48:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1553 states have (on average 1.266580811332904) internal successors, (1967), 1560 states have internal predecessors, (1967), 94 states have call successors, (94), 41 states have call predecessors, (94), 41 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-24 15:48:49,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2155 transitions. [2023-12-24 15:48:49,199 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2155 transitions. Word has length 159 [2023-12-24 15:48:49,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:48:49,199 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 2155 transitions. [2023-12-24 15:48:49,199 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:48:49,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2155 transitions. [2023-12-24 15:48:49,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 15:48:49,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:48:49,201 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:49,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-24 15:48:49,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:49,402 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:48:49,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:48:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash -871525423, now seen corresponding path program 1 times [2023-12-24 15:48:49,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:48:49,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101472538] [2023-12-24 15:48:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:48:49,403 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 15:48:49,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:48:49,404 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:48:49,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-24 15:48:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:48:49,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 15:48:49,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:56,498 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2023-12-24 15:48:56,498 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 50 treesize of output 45 [2023-12-24 15:48:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 76 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 15:48:56,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:49:01,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 98 [2023-12-24 15:49:14,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:49:14,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101472538] [2023-12-24 15:49:14,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101472538] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:49:14,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1233356917] [2023-12-24 15:49:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:49:14,026 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:49:14,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:49:14,027 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:49:14,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-12-24 15:49:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:49:14,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 15:49:14,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:49:14,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 15:49:14,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 15:49:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:49:15,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:49:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1233356917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:49:15,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:49:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2023-12-24 15:49:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115483966] [2023-12-24 15:49:15,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:49:15,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:49:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:49:15,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:49:15,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=512, Unknown=5, NotChecked=0, Total=600 [2023-12-24 15:49:15,111 INFO L87 Difference]: Start difference. First operand 1689 states and 2155 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:49:16,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:49:16,282 INFO L93 Difference]: Finished difference Result 3181 states and 4029 transitions. [2023-12-24 15:49:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:49:16,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 15:49:16,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:49:16,287 INFO L225 Difference]: With dead ends: 3181 [2023-12-24 15:49:16,287 INFO L226 Difference]: Without dead ends: 1925 [2023-12-24 15:49:16,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=87, Invalid=558, Unknown=5, NotChecked=0, Total=650 [2023-12-24 15:49:16,288 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 66 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:49:16,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 544 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 15:49:16,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2023-12-24 15:49:16,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1739. [2023-12-24 15:49:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1614 states have (on average 1.2558859975216852) internal successors, (2027), 1618 states have internal predecessors, (2027), 84 states have call successors, (84), 40 states have call predecessors, (84), 40 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-24 15:49:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2195 transitions. [2023-12-24 15:49:16,536 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2195 transitions. Word has length 159 [2023-12-24 15:49:16,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:49:16,536 INFO L495 AbstractCegarLoop]: Abstraction has 1739 states and 2195 transitions. [2023-12-24 15:49:16,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:49:16,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2195 transitions. [2023-12-24 15:49:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 15:49:16,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:49:16,538 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:16,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-24 15:49:16,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2023-12-24 15:49:16,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:49:16,947 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:49:16,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:49:16,947 INFO L85 PathProgramCache]: Analyzing trace with hash 903481939, now seen corresponding path program 1 times [2023-12-24 15:49:16,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:49:16,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096404850] [2023-12-24 15:49:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:49:16,948 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 15:49:16,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:49:16,949 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:49:16,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-24 15:49:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:49:17,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 15:49:17,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:49:23,927 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2023-12-24 15:49:23,927 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 50 treesize of output 45 [2023-12-24 15:49:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 76 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 15:49:24,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:49:29,417 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 15:49:29,417 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 135 treesize of output 114 [2023-12-24 15:49:42,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:49:42,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096404850] [2023-12-24 15:49:42,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096404850] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:49:42,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1991499541] [2023-12-24 15:49:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:49:42,123 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:49:42,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:49:42,123 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:49:42,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-12-24 15:49:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:49:42,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 15:49:42,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:49:45,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 15:50:02,683 INFO L349 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2023-12-24 15:50:02,683 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 50 treesize of output 49 [2023-12-24 15:50:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 76 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 15:50:03,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:50:12,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 105 [2023-12-24 15:50:46,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1991499541] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:50:46,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:50:46,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-24 15:50:46,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408625961] [2023-12-24 15:50:46,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:50:46,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 15:50:46,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:50:46,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 15:50:46,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1490, Unknown=18, NotChecked=0, Total=1722 [2023-12-24 15:50:46,227 INFO L87 Difference]: Start difference. First operand 1739 states and 2195 transitions. Second operand has 26 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 6 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 15:50:54,440 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 39 DAG size of output: 26 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 15:51:02,700 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 43 DAG size of output: 30 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 15:51:18,277 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 39 DAG size of output: 26 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 15:51:30,534 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 36 DAG size of output: 24 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 15:51:52,584 WARN L293 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 102 DAG size of output: 76 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 15:51:58,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:52:02,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:52:06,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:52:10,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:52:14,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:52:18,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:53:10,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:53:14,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:53:18,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:53:22,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:53:26,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:53:30,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:54:43,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:54:47,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:54:51,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:54:55,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:54:59,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:55:03,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:55:07,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:55:11,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:55:15,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:55:19,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:55:23,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:55:27,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:55:31,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-24 15:55:35,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:55:35,510 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 15:55:35,511 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 (40)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 15:55:35,512 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 15:55:36,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-24 15:55:36,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2023-12-24 15:55:36,711 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-24 15:55:36,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 261.5s TimeCoverageRelationStatistics Valid=524, Invalid=2964, Unknown=52, NotChecked=0, Total=3540 [2023-12-24 15:55:36,822 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 904 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 234 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:55:36,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 1634 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1307 Invalid, 26 Unknown, 0 Unchecked, 109.7s Time] [2023-12-24 15:55:36,823 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 15:55:36,823 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-24 15:55:36,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-24 15:55:36,827 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:55:36,832 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 15:55:36,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 03:55:36 BoogieIcfgContainer [2023-12-24 15:55:36,834 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 15:55:36,834 INFO L158 Benchmark]: Toolchain (without parser) took 856157.11ms. Allocated memory was 203.4MB in the beginning and 434.1MB in the end (delta: 230.7MB). Free memory was 145.2MB in the beginning and 254.5MB in the end (delta: -109.4MB). Peak memory consumption was 122.1MB. Max. memory is 8.0GB. [2023-12-24 15:55:36,834 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 203.4MB. Free memory is still 158.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 15:55:36,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.02ms. Allocated memory is still 203.4MB. Free memory was 144.9MB in the beginning and 128.9MB in the end (delta: 16.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 15:55:36,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.83ms. Allocated memory is still 203.4MB. Free memory was 128.9MB in the beginning and 125.5MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 15:55:36,835 INFO L158 Benchmark]: Boogie Preprocessor took 71.38ms. Allocated memory is still 203.4MB. Free memory was 125.5MB in the beginning and 120.3MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 15:55:36,835 INFO L158 Benchmark]: RCFGBuilder took 814.06ms. Allocated memory was 203.4MB in the beginning and 245.4MB in the end (delta: 41.9MB). Free memory was 120.3MB in the beginning and 176.2MB in the end (delta: -55.9MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2023-12-24 15:55:36,835 INFO L158 Benchmark]: TraceAbstraction took 854914.72ms. Allocated memory was 245.4MB in the beginning and 434.1MB in the end (delta: 188.7MB). Free memory was 175.7MB in the beginning and 254.5MB in the end (delta: -78.9MB). Peak memory consumption was 110.4MB. Max. memory is 8.0GB. [2023-12-24 15:55:36,836 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 203.4MB. Free memory is still 158.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 291.02ms. Allocated memory is still 203.4MB. Free memory was 144.9MB in the beginning and 128.9MB in the end (delta: 16.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.83ms. Allocated memory is still 203.4MB. Free memory was 128.9MB in the beginning and 125.5MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 71.38ms. Allocated memory is still 203.4MB. Free memory was 125.5MB in the beginning and 120.3MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 814.06ms. Allocated memory was 203.4MB in the beginning and 245.4MB in the end (delta: 41.9MB). Free memory was 120.3MB in the beginning and 176.2MB in the end (delta: -55.9MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * TraceAbstraction took 854914.72ms. Allocated memory was 245.4MB in the beginning and 434.1MB in the end (delta: 188.7MB). Free memory was 175.7MB in the beginning and 254.5MB in the end (delta: -78.9MB). Peak memory consumption was 110.4MB. 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, 96 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 854.9s, OverallIterations: 27, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 451.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 mSolverCounterUnknown, 16065 SdHoareTripleChecker+Valid, 201.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16055 mSDsluCounter, 24941 SdHoareTripleChecker+Invalid, 196.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21593 mSDsCounter, 4083 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27215 IncrementalHoareTripleChecker+Invalid, 31325 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4083 mSolverCounterUnsat, 3348 mSDtfsCounter, 27215 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7999 GetRequests, 6953 SyntacticMatches, 21 SemanticMatches, 1025 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20064 ImplicationChecksByTransitivity, 472.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1739occurred in iteration=26, InterpolantAutomatonStates: 503, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 26 MinimizatonAttempts, 3386 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.6s SsaConstructionTime, 12.1s SatisfiabilityAnalysisTime, 373.9s InterpolantComputationTime, 6214 NumberOfCodeBlocks, 6214 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 6640 ConstructedInterpolants, 1453 QuantifiedInterpolants, 153633 SizeOfPredicates, 622 NumberOfNonLiveVariables, 13902 ConjunctsInSsa, 1027 ConjunctsInUnsatCore, 43 InterpolantComputations, 15 PerfectInterpolantSequences, 26640/32680 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