/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:00:52,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:00:52,580 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 16:00:52,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:00:52,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:00:52,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:00:52,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:00:52,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:00:52,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:00:52,610 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:00:52,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:00:52,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:00:52,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:00:52,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:00:52,612 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:00:52,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:00:52,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:00:52,613 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:00:52,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:00:52,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:00:52,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:00:52,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:00:52,613 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:00:52,614 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:00:52,614 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:00:52,614 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:00:52,614 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:00:52,614 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:00:52,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:00:52,614 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:00:52,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:00:52,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:00:52,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:00:52,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:00:52,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:00:52,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:00:52,616 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:00:52,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:00:52,616 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:00:52,616 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:00:52,616 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:00:52,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:00:52,617 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:00:52,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:00:52,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:00:52,617 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:00:52,617 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:00:52,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:00:52,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:00:52,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:00:52,826 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:00:52,826 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:00:52,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i [2023-12-24 16:00:53,743 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:00:53,918 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:00:53,919 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i [2023-12-24 16:00:53,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d296cb870/dea3292f914f4229898bfb97a700b5c4/FLAG74e443066 [2023-12-24 16:00:53,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d296cb870/dea3292f914f4229898bfb97a700b5c4 [2023-12-24 16:00:53,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:00:53,945 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:00:53,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:00:53,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:00:53,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:00:53,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:00:53" (1/1) ... [2023-12-24 16:00:53,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9f839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:53, skipping insertion in model container [2023-12-24 16:00:53,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:00:53" (1/1) ... [2023-12-24 16:00:53,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:00:54,069 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i[916,929] [2023-12-24 16:00:54,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:00:54,122 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:00:54,130 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i[916,929] [2023-12-24 16:00:54,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:00:54,171 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:00:54,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54 WrapperNode [2023-12-24 16:00:54,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:00:54,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:00:54,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:00:54,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:00:54,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,222 INFO L138 Inliner]: procedures = 30, calls = 161, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 472 [2023-12-24 16:00:54,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:00:54,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:00:54,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:00:54,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:00:54,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,236 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,260 INFO L175 MemorySlicer]: Split 123 memory accesses to 12 slices as follows [2, 5, 6, 6, 8, 10, 23, 10, 18, 20, 7, 8]. 19 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 14 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1]. [2023-12-24 16:00:54,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:00:54,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:00:54,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:00:54,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:00:54,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (1/1) ... [2023-12-24 16:00:54,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:00:54,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:00:54,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 16:00:54,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 16:00:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:00:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:00:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:00:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:00:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:00:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:00:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:00:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:00:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:00:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:00:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:00:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:00:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 16:00:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:00:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:00:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:00:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:00:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:00:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:00:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:00:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:00:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:00:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:00:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:00:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 16:00:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 16:00:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 16:00:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:00:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:00:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:00:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:00:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:00:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:00:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:00:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:00:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:00:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:00:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:00:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:00:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:00:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:00:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:00:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 16:00:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 16:00:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 16:00:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 16:00:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 16:00:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 16:00:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 16:00:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 16:00:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 16:00:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-24 16:00:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-24 16:00:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-24 16:00:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2023-12-24 16:00:54,555 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:00:54,557 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:00:54,968 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:00:55,005 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:00:55,005 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:00:55,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:00:55 BoogieIcfgContainer [2023-12-24 16:00:55,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:00:55,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:00:55,008 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:00:55,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:00:55,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:00:53" (1/3) ... [2023-12-24 16:00:55,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e35e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:00:55, skipping insertion in model container [2023-12-24 16:00:55,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:00:54" (2/3) ... [2023-12-24 16:00:55,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e35e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:00:55, skipping insertion in model container [2023-12-24 16:00:55,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:00:55" (3/3) ... [2023-12-24 16:00:55,013 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-12.i [2023-12-24 16:00:55,026 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:00:55,026 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:00:55,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:00:55,085 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;@79659fc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:00:55,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:00:55,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:00:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 16:00:55,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:00:55,105 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:00:55,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:00:55,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:00:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash 800962782, now seen corresponding path program 1 times [2023-12-24 16:00:55,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:00:55,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226992489] [2023-12-24 16:00:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:00:55,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:00:55,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:00:55,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:00:55,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 16:00:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:00:55,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:00:55,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:00:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-24 16:00:55,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:00:55,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:00:55,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226992489] [2023-12-24 16:00:55,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226992489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:00:55,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:00:55,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:00:55,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202994535] [2023-12-24 16:00:55,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:00:55,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:00:55,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:00:55,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:00:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:00:55,422 INFO L87 Difference]: Start difference. First operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 16:00:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:00:55,462 INFO L93 Difference]: Finished difference Result 173 states and 274 transitions. [2023-12-24 16:00:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:00:55,464 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2023-12-24 16:00:55,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:00:55,469 INFO L225 Difference]: With dead ends: 173 [2023-12-24 16:00:55,469 INFO L226 Difference]: Without dead ends: 83 [2023-12-24 16:00:55,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:00:55,473 INFO L413 NwaCegarLoop]: 114 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, 114 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:00:55,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:00:55,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-24 16:00:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-24 16:00:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:00:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2023-12-24 16:00:55,502 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 112 [2023-12-24 16:00:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:00:55,502 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2023-12-24 16:00:55,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 16:00:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2023-12-24 16:00:55,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 16:00:55,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:00:55,505 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:00:55,509 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 (2)] Ended with exit code 0 [2023-12-24 16:00:55,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:00:55,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:00:55,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:00:55,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1146482878, now seen corresponding path program 1 times [2023-12-24 16:00:55,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:00:55,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18331932] [2023-12-24 16:00:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:00:55,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:00:55,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:00:55,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:00:55,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 16:00:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:00:55,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:00:55,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:00:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:00:55,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:00:55,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:00:55,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18331932] [2023-12-24 16:00:55,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18331932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:00:55,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:00:55,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:00:55,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752849351] [2023-12-24 16:00:55,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:00:55,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:00:55,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:00:55,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:00:55,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:00:55,951 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:00:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:00:56,022 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2023-12-24 16:00:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:00:56,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 112 [2023-12-24 16:00:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:00:56,026 INFO L225 Difference]: With dead ends: 165 [2023-12-24 16:00:56,026 INFO L226 Difference]: Without dead ends: 83 [2023-12-24 16:00:56,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:00:56,030 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 45 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:00:56,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 286 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:00:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-24 16:00:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-24 16:00:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:00:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2023-12-24 16:00:56,044 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 112 [2023-12-24 16:00:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:00:56,045 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2023-12-24 16:00:56,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:00:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2023-12-24 16:00:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 16:00:56,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:00:56,047 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:00:56,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 16:00:56,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:00:56,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:00:56,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:00:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1770995456, now seen corresponding path program 1 times [2023-12-24 16:00:56,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:00:56,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202013748] [2023-12-24 16:00:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:00:56,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:00:56,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:00:56,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:00:56,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 16:00:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:00:56,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:00:56,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:00:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:00:56,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:00:56,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:00:56,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202013748] [2023-12-24 16:00:56,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202013748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:00:56,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:00:56,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:00:56,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188315167] [2023-12-24 16:00:56,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:00:56,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:00:56,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:00:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:00:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:00:56,467 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:00:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:00:56,540 INFO L93 Difference]: Finished difference Result 177 states and 250 transitions. [2023-12-24 16:00:56,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:00:56,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 114 [2023-12-24 16:00:56,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:00:56,541 INFO L225 Difference]: With dead ends: 177 [2023-12-24 16:00:56,541 INFO L226 Difference]: Without dead ends: 95 [2023-12-24 16:00:56,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:00:56,543 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 65 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:00:56,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 410 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:00:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-24 16:00:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2023-12-24 16:00:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:00:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2023-12-24 16:00:56,548 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 114 [2023-12-24 16:00:56,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:00:56,549 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2023-12-24 16:00:56,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:00:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2023-12-24 16:00:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 16:00:56,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:00:56,550 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:00:56,557 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 16:00:56,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:00:56,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:00:56,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:00:56,754 INFO L85 PathProgramCache]: Analyzing trace with hash 206005468, now seen corresponding path program 1 times [2023-12-24 16:00:56,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:00:56,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92282139] [2023-12-24 16:00:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:00:56,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:00:56,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:00:56,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:00:56,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 16:00:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:00:56,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:00:56,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:00:57,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:00:57,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2023-12-24 16:00:57,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 16:00:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 42 proven. 60 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-24 16:00:57,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:00:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:00:57,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:00:57,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92282139] [2023-12-24 16:00:57,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92282139] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:00:57,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:00:57,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2023-12-24 16:00:57,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604002888] [2023-12-24 16:00:57,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:00:57,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:00:57,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:00:57,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:00:57,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:00:57,773 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:00:57,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:00:57,914 INFO L93 Difference]: Finished difference Result 157 states and 214 transitions. [2023-12-24 16:00:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:00:57,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 116 [2023-12-24 16:00:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:00:57,916 INFO L225 Difference]: With dead ends: 157 [2023-12-24 16:00:57,916 INFO L226 Difference]: Without dead ends: 155 [2023-12-24 16:00:57,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:00:57,917 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 102 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:00:57,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 699 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:00:57,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-24 16:00:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2023-12-24 16:00:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 120 states have internal predecessors, (150), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 16:00:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 210 transitions. [2023-12-24 16:00:57,926 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 210 transitions. Word has length 116 [2023-12-24 16:00:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:00:57,927 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 210 transitions. [2023-12-24 16:00:57,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:00:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 210 transitions. [2023-12-24 16:00:57,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 16:00:57,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:00:57,928 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:00:57,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 16:00:58,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:00:58,133 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:00:58,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:00:58,133 INFO L85 PathProgramCache]: Analyzing trace with hash -862420349, now seen corresponding path program 1 times [2023-12-24 16:00:58,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:00:58,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641073959] [2023-12-24 16:00:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:00:58,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:00:58,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:00:58,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:00:58,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 16:00:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:00:58,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 16:00:58,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:00:59,536 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 36 treesize of output 24 [2023-12-24 16:00:59,540 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 13 treesize of output 9 [2023-12-24 16:00:59,701 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 59 treesize of output 43 [2023-12-24 16:00:59,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 16:00:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 46 proven. 302 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 16:00:59,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:00,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:01:00,296 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 38 treesize of output 37 [2023-12-24 16:01:01,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:01:01,018 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 46 treesize of output 41 [2023-12-24 16:01:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-24 16:01:01,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:01,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641073959] [2023-12-24 16:01:01,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641073959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:01:01,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:01:01,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 43 [2023-12-24 16:01:01,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416370442] [2023-12-24 16:01:01,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:01:01,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-24 16:01:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-24 16:01:01,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1576, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 16:01:01,148 INFO L87 Difference]: Start difference. First operand 152 states and 210 transitions. Second operand has 43 states, 35 states have (on average 2.657142857142857) internal successors, (93), 37 states have internal predecessors, (93), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-24 16:01:04,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:04,839 INFO L93 Difference]: Finished difference Result 265 states and 338 transitions. [2023-12-24 16:01:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-24 16:01:04,840 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 35 states have (on average 2.657142857142857) internal successors, (93), 37 states have internal predecessors, (93), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) Word has length 117 [2023-12-24 16:01:04,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:04,842 INFO L225 Difference]: With dead ends: 265 [2023-12-24 16:01:04,842 INFO L226 Difference]: Without dead ends: 263 [2023-12-24 16:01:04,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1248, Invalid=5724, Unknown=0, NotChecked=0, Total=6972 [2023-12-24 16:01:04,844 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 735 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:04,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1538 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 16:01:04,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-24 16:01:04,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 176. [2023-12-24 16:01:04,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.2262773722627738) internal successors, (168), 138 states have internal predecessors, (168), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 16:01:04,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 228 transitions. [2023-12-24 16:01:04,859 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 228 transitions. Word has length 117 [2023-12-24 16:01:04,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:04,860 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 228 transitions. [2023-12-24 16:01:04,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 35 states have (on average 2.657142857142857) internal successors, (93), 37 states have internal predecessors, (93), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-24 16:01:04,860 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 228 transitions. [2023-12-24 16:01:04,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 16:01:04,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:04,861 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:04,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:05,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:05,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:05,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:05,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1236684999, now seen corresponding path program 1 times [2023-12-24 16:01:05,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:05,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862216790] [2023-12-24 16:01:05,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:05,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:05,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:05,067 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:05,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 16:01:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:05,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 16:01:05,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:06,454 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 36 treesize of output 24 [2023-12-24 16:01:06,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 16:01:06,627 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 59 treesize of output 43 [2023-12-24 16:01:06,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 16:01:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 46 proven. 302 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 16:01:06,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:07,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:01:07,265 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 38 treesize of output 37 [2023-12-24 16:01:07,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:01:07,982 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 46 treesize of output 41 [2023-12-24 16:01:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-24 16:01:08,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:08,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862216790] [2023-12-24 16:01:08,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862216790] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:01:08,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:01:08,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 45 [2023-12-24 16:01:08,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692364788] [2023-12-24 16:01:08,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:01:08,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-24 16:01:08,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:08,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-24 16:01:08,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1745, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 16:01:08,124 INFO L87 Difference]: Start difference. First operand 176 states and 228 transitions. Second operand has 45 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 39 states have internal predecessors, (95), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-24 16:01:10,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:10,912 INFO L93 Difference]: Finished difference Result 197 states and 247 transitions. [2023-12-24 16:01:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-24 16:01:10,918 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 39 states have internal predecessors, (95), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) Word has length 118 [2023-12-24 16:01:10,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:10,919 INFO L225 Difference]: With dead ends: 197 [2023-12-24 16:01:10,919 INFO L226 Difference]: Without dead ends: 195 [2023-12-24 16:01:10,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1134, Invalid=4872, Unknown=0, NotChecked=0, Total=6006 [2023-12-24 16:01:10,922 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 939 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:10,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 1424 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 16:01:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-24 16:01:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 181. [2023-12-24 16:01:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 141 states have (on average 1.2198581560283688) internal successors, (172), 142 states have internal predecessors, (172), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 16:01:10,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 232 transitions. [2023-12-24 16:01:10,934 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 232 transitions. Word has length 118 [2023-12-24 16:01:10,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:10,934 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 232 transitions. [2023-12-24 16:01:10,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 39 states have internal predecessors, (95), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-24 16:01:10,935 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 232 transitions. [2023-12-24 16:01:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 16:01:10,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:10,936 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:10,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:11,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:11,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:11,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:11,141 INFO L85 PathProgramCache]: Analyzing trace with hash 756075619, now seen corresponding path program 1 times [2023-12-24 16:01:11,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:11,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125266572] [2023-12-24 16:01:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:11,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:11,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:11,142 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:11,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 16:01:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:11,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:01:11,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:11,341 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 19 treesize of output 11 [2023-12-24 16:01:11,342 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 15 treesize of output 7 [2023-12-24 16:01:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:11,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:01:11,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:11,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125266572] [2023-12-24 16:01:11,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125266572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:01:11,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:01:11,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:01:11,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779003847] [2023-12-24 16:01:11,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:11,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:01:11,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:01:11,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:01:11,350 INFO L87 Difference]: Start difference. First operand 181 states and 232 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:11,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:11,411 INFO L93 Difference]: Finished difference Result 439 states and 564 transitions. [2023-12-24 16:01:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:01:11,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2023-12-24 16:01:11,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:11,412 INFO L225 Difference]: With dead ends: 439 [2023-12-24 16:01:11,413 INFO L226 Difference]: Without dead ends: 259 [2023-12-24 16:01:11,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:01:11,413 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 62 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:11,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 428 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:01:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-24 16:01:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 202. [2023-12-24 16:01:11,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 162 states have (on average 1.2160493827160495) internal successors, (197), 163 states have internal predecessors, (197), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 16:01:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 257 transitions. [2023-12-24 16:01:11,431 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 257 transitions. Word has length 119 [2023-12-24 16:01:11,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:11,431 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 257 transitions. [2023-12-24 16:01:11,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:11,431 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 257 transitions. [2023-12-24 16:01:11,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 16:01:11,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:11,432 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:11,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:11,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:11,637 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:11,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1255421784, now seen corresponding path program 1 times [2023-12-24 16:01:11,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:11,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984702898] [2023-12-24 16:01:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:11,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:11,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:11,639 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:11,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 16:01:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:11,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:01:11,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:12,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-24 16:01:12,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:01:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 2 proven. 162 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-12-24 16:01:12,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:12,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:01:12,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 42 [2023-12-24 16:01:12,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:12,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984702898] [2023-12-24 16:01:12,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984702898] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:12,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [147628312] [2023-12-24 16:01:12,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:12,842 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:01:12,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:01:12,843 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:01:12,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 16:01:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:13,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:01:13,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:13,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-24 16:01:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:13,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:01:13,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [147628312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:01:13,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:13,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2023-12-24 16:01:13,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14372342] [2023-12-24 16:01:13,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:13,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:01:13,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:13,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:01:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:01:13,621 INFO L87 Difference]: Start difference. First operand 202 states and 257 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:13,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:13,704 INFO L93 Difference]: Finished difference Result 538 states and 680 transitions. [2023-12-24 16:01:13,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:01:13,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2023-12-24 16:01:13,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:13,708 INFO L225 Difference]: With dead ends: 538 [2023-12-24 16:01:13,708 INFO L226 Difference]: Without dead ends: 337 [2023-12-24 16:01:13,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:01:13,710 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 46 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:13,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 318 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:01:13,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-12-24 16:01:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 328. [2023-12-24 16:01:13,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 249 states have (on average 1.1686746987951808) internal successors, (291), 251 states have internal predecessors, (291), 60 states have call successors, (60), 18 states have call predecessors, (60), 18 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 16:01:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 411 transitions. [2023-12-24 16:01:13,735 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 411 transitions. Word has length 119 [2023-12-24 16:01:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:13,735 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 411 transitions. [2023-12-24 16:01:13,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 411 transitions. [2023-12-24 16:01:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 16:01:13,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:13,736 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:13,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:13,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:14,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:01:14,141 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:14,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash 214911180, now seen corresponding path program 1 times [2023-12-24 16:01:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37063087] [2023-12-24 16:01:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:14,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:14,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:14,143 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:14,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 16:01:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:14,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:01:14,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:14,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 16:01:14,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:01:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 2 proven. 162 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-12-24 16:01:14,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:15,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:01:15,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 42 [2023-12-24 16:01:15,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:15,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37063087] [2023-12-24 16:01:15,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37063087] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:15,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1012479210] [2023-12-24 16:01:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:15,425 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:01:15,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:01:15,426 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:01:15,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 16:01:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:15,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:01:15,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:16,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 16:01:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:16,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:01:16,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1012479210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:01:16,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:16,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-24 16:01:16,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751288339] [2023-12-24 16:01:16,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:16,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:01:16,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:16,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:01:16,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:01:16,205 INFO L87 Difference]: Start difference. First operand 328 states and 411 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:16,304 INFO L93 Difference]: Finished difference Result 616 states and 772 transitions. [2023-12-24 16:01:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 16:01:16,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 120 [2023-12-24 16:01:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:16,308 INFO L225 Difference]: With dead ends: 616 [2023-12-24 16:01:16,309 INFO L226 Difference]: Without dead ends: 329 [2023-12-24 16:01:16,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:01:16,311 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 24 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:16,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 318 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:01:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-24 16:01:16,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 320. [2023-12-24 16:01:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 241 states have (on average 1.157676348547718) internal successors, (279), 243 states have internal predecessors, (279), 60 states have call successors, (60), 18 states have call predecessors, (60), 18 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 16:01:16,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 399 transitions. [2023-12-24 16:01:16,361 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 399 transitions. Word has length 120 [2023-12-24 16:01:16,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:16,361 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 399 transitions. [2023-12-24 16:01:16,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 399 transitions. [2023-12-24 16:01:16,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:16,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:16,362 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:16,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:16,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:16,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:01:16,767 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:16,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:16,768 INFO L85 PathProgramCache]: Analyzing trace with hash -444392749, now seen corresponding path program 1 times [2023-12-24 16:01:16,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:16,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428939105] [2023-12-24 16:01:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:16,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:16,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:16,769 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:16,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 16:01:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:16,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:01:16,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:17,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:01:17,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-24 16:01:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 16:01:17,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:17,886 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:17,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:17,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428939105] [2023-12-24 16:01:17,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428939105] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:17,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:17,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:01:17,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359513645] [2023-12-24 16:01:17,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:17,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:01:17,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:17,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:01:17,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:01:17,887 INFO L87 Difference]: Start difference. First operand 320 states and 399 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:18,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:18,094 INFO L93 Difference]: Finished difference Result 683 states and 856 transitions. [2023-12-24 16:01:18,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:01:18,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:01:18,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:18,096 INFO L225 Difference]: With dead ends: 683 [2023-12-24 16:01:18,096 INFO L226 Difference]: Without dead ends: 482 [2023-12-24 16:01:18,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:01:18,120 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 177 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:18,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 307 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:01:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-24 16:01:18,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 475. [2023-12-24 16:01:18,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 367 states have (on average 1.1798365122615804) internal successors, (433), 371 states have internal predecessors, (433), 80 states have call successors, (80), 27 states have call predecessors, (80), 27 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 16:01:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 593 transitions. [2023-12-24 16:01:18,150 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 593 transitions. Word has length 124 [2023-12-24 16:01:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:18,151 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 593 transitions. [2023-12-24 16:01:18,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:18,151 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 593 transitions. [2023-12-24 16:01:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:18,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:18,153 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:18,159 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 16:01:18,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:18,360 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:18,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:18,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2045136213, now seen corresponding path program 1 times [2023-12-24 16:01:18,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:18,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243427761] [2023-12-24 16:01:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:18,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:18,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:18,362 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:18,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 16:01:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:18,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:01:18,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:19,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:01:19,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-24 16:01:19,423 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 16:01:19,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:19,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:19,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243427761] [2023-12-24 16:01:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243427761] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:01:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312481163] [2023-12-24 16:01:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:19,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:01:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:19,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:01:19,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:01:19,554 INFO L87 Difference]: Start difference. First operand 475 states and 593 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:19,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:19,815 INFO L93 Difference]: Finished difference Result 891 states and 1127 transitions. [2023-12-24 16:01:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:01:19,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:01:19,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:19,818 INFO L225 Difference]: With dead ends: 891 [2023-12-24 16:01:19,818 INFO L226 Difference]: Without dead ends: 539 [2023-12-24 16:01:19,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:01:19,819 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 198 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:19,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 344 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:01:19,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-12-24 16:01:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 475. [2023-12-24 16:01:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 367 states have (on average 1.1743869209809263) internal successors, (431), 371 states have internal predecessors, (431), 80 states have call successors, (80), 27 states have call predecessors, (80), 27 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 16:01:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 591 transitions. [2023-12-24 16:01:19,847 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 591 transitions. Word has length 124 [2023-12-24 16:01:19,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:19,848 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 591 transitions. [2023-12-24 16:01:19,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:19,848 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 591 transitions. [2023-12-24 16:01:19,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:19,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:19,849 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:19,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:20,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:20,053 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:20,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:20,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1548766505, now seen corresponding path program 1 times [2023-12-24 16:01:20,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:20,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682025925] [2023-12-24 16:01:20,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:20,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:20,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:20,055 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:20,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 16:01:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:20,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:01:20,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:20,804 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 19 [2023-12-24 16:01:20,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:01:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-24 16:01:20,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:21,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:21,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682025925] [2023-12-24 16:01:21,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682025925] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:21,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:21,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-24 16:01:21,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837227859] [2023-12-24 16:01:21,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:21,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:01:21,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:21,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:01:21,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:01:21,030 INFO L87 Difference]: Start difference. First operand 475 states and 591 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:21,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:21,410 INFO L93 Difference]: Finished difference Result 1037 states and 1305 transitions. [2023-12-24 16:01:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:01:21,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:01:21,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:21,414 INFO L225 Difference]: With dead ends: 1037 [2023-12-24 16:01:21,414 INFO L226 Difference]: Without dead ends: 685 [2023-12-24 16:01:21,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:01:21,415 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 192 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:21,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 642 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:01:21,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-24 16:01:21,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 501. [2023-12-24 16:01:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 393 states have (on average 1.178117048346056) internal successors, (463), 397 states have internal predecessors, (463), 80 states have call successors, (80), 27 states have call predecessors, (80), 27 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 16:01:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 623 transitions. [2023-12-24 16:01:21,444 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 623 transitions. Word has length 124 [2023-12-24 16:01:21,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:21,445 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 623 transitions. [2023-12-24 16:01:21,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:21,445 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 623 transitions. [2023-12-24 16:01:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:21,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:21,445 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:21,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:21,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:21,650 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:21,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:21,650 INFO L85 PathProgramCache]: Analyzing trace with hash 801652192, now seen corresponding path program 1 times [2023-12-24 16:01:21,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:21,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973124439] [2023-12-24 16:01:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:21,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:21,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:21,651 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:21,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 16:01:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:21,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:01:21,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:22,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:01:22,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-24 16:01:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 16:01:22,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:22,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:22,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973124439] [2023-12-24 16:01:22,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973124439] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:22,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:22,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:01:22,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86923218] [2023-12-24 16:01:22,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:22,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:01:22,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:01:22,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:01:22,871 INFO L87 Difference]: Start difference. First operand 501 states and 623 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:23,098 INFO L93 Difference]: Finished difference Result 943 states and 1183 transitions. [2023-12-24 16:01:23,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:01:23,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:01:23,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:23,101 INFO L225 Difference]: With dead ends: 943 [2023-12-24 16:01:23,101 INFO L226 Difference]: Without dead ends: 565 [2023-12-24 16:01:23,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:01:23,103 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 182 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:23,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 339 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:01:23,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-12-24 16:01:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 501. [2023-12-24 16:01:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 393 states have (on average 1.173027989821883) internal successors, (461), 397 states have internal predecessors, (461), 80 states have call successors, (80), 27 states have call predecessors, (80), 27 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 16:01:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 621 transitions. [2023-12-24 16:01:23,140 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 621 transitions. Word has length 124 [2023-12-24 16:01:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:23,140 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 621 transitions. [2023-12-24 16:01:23,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 621 transitions. [2023-12-24 16:01:23,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:23,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:23,142 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:23,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:23,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:23,347 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:23,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1481710562, now seen corresponding path program 1 times [2023-12-24 16:01:23,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:23,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621047781] [2023-12-24 16:01:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:23,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:23,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:23,348 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:23,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 16:01:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:23,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:01:23,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:24,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:01:24,214 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 19 treesize of output 11 [2023-12-24 16:01:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 334 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 16:01:24,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:24,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:01:24,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2023-12-24 16:01:24,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:24,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621047781] [2023-12-24 16:01:24,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621047781] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:24,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1196637680] [2023-12-24 16:01:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:24,615 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:01:24,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:01:24,616 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:01:24,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-24 16:01:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:24,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:01:24,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:26,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:01:26,876 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 19 treesize of output 11 [2023-12-24 16:01:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 334 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 16:01:26,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:27,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:01:27,107 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 30 treesize of output 33 [2023-12-24 16:01:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1196637680] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:27,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:01:27,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-12-24 16:01:27,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376338086] [2023-12-24 16:01:27,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:01:27,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 16:01:27,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:27,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 16:01:27,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 16:01:27,246 INFO L87 Difference]: Start difference. First operand 501 states and 621 transitions. Second operand has 28 states, 24 states have (on average 4.541666666666667) internal successors, (109), 23 states have internal predecessors, (109), 10 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 6 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-24 16:01:28,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:28,819 INFO L93 Difference]: Finished difference Result 976 states and 1209 transitions. [2023-12-24 16:01:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 16:01:28,820 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 4.541666666666667) internal successors, (109), 23 states have internal predecessors, (109), 10 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 6 states have call predecessors, (32), 10 states have call successors, (32) Word has length 124 [2023-12-24 16:01:28,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:28,822 INFO L225 Difference]: With dead ends: 976 [2023-12-24 16:01:28,822 INFO L226 Difference]: Without dead ends: 598 [2023-12-24 16:01:28,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 302 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=491, Invalid=2479, Unknown=0, NotChecked=0, Total=2970 [2023-12-24 16:01:28,824 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 647 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:28,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1098 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 16:01:28,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2023-12-24 16:01:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 397. [2023-12-24 16:01:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 315 states have (on average 1.1682539682539683) internal successors, (368), 317 states have internal predecessors, (368), 56 states have call successors, (56), 25 states have call predecessors, (56), 25 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 16:01:28,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 480 transitions. [2023-12-24 16:01:28,865 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 480 transitions. Word has length 124 [2023-12-24 16:01:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:28,866 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 480 transitions. [2023-12-24 16:01:28,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 4.541666666666667) internal successors, (109), 23 states have internal predecessors, (109), 10 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 6 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-24 16:01:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 480 transitions. [2023-12-24 16:01:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:28,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:28,866 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:28,873 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 (17)] Ended with exit code 0 [2023-12-24 16:01:29,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:29,267 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=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:01:29,268 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:29,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:29,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1103919372, now seen corresponding path program 1 times [2023-12-24 16:01:29,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:29,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834950751] [2023-12-24 16:01:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:29,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:29,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:29,270 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:29,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 16:01:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:29,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:01:29,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:30,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:01:30,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-24 16:01:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 16:01:30,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:30,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:30,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834950751] [2023-12-24 16:01:30,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834950751] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:30,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:30,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:01:30,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048183805] [2023-12-24 16:01:30,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:30,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:01:30,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:01:30,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:01:30,443 INFO L87 Difference]: Start difference. First operand 397 states and 480 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:30,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:30,634 INFO L93 Difference]: Finished difference Result 664 states and 809 transitions. [2023-12-24 16:01:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:01:30,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:01:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:30,643 INFO L225 Difference]: With dead ends: 664 [2023-12-24 16:01:30,644 INFO L226 Difference]: Without dead ends: 402 [2023-12-24 16:01:30,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:01:30,645 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 95 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:30,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 401 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:01:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-24 16:01:30,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 397. [2023-12-24 16:01:30,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 315 states have (on average 1.1650793650793652) internal successors, (367), 317 states have internal predecessors, (367), 56 states have call successors, (56), 25 states have call predecessors, (56), 25 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 16:01:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 479 transitions. [2023-12-24 16:01:30,683 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 479 transitions. Word has length 124 [2023-12-24 16:01:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:30,683 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 479 transitions. [2023-12-24 16:01:30,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 479 transitions. [2023-12-24 16:01:30,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:30,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:30,685 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:30,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:30,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:30,890 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:30,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:30,890 INFO L85 PathProgramCache]: Analyzing trace with hash -701518962, now seen corresponding path program 1 times [2023-12-24 16:01:30,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:30,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589666867] [2023-12-24 16:01:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:30,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:30,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:30,892 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:30,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 16:01:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:31,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:01:31,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:32,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:01:32,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-24 16:01:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 16:01:32,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:32,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:32,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589666867] [2023-12-24 16:01:32,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589666867] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:32,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:32,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:01:32,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100307059] [2023-12-24 16:01:32,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:32,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:01:32,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:32,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:01:32,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:01:32,201 INFO L87 Difference]: Start difference. First operand 397 states and 479 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:32,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:32,383 INFO L93 Difference]: Finished difference Result 700 states and 857 transitions. [2023-12-24 16:01:32,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:01:32,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:01:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:32,390 INFO L225 Difference]: With dead ends: 700 [2023-12-24 16:01:32,390 INFO L226 Difference]: Without dead ends: 438 [2023-12-24 16:01:32,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:01:32,391 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 114 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:32,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 446 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:01:32,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-24 16:01:32,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 397. [2023-12-24 16:01:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 315 states have (on average 1.1587301587301588) internal successors, (365), 317 states have internal predecessors, (365), 56 states have call successors, (56), 25 states have call predecessors, (56), 25 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 16:01:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 477 transitions. [2023-12-24 16:01:32,427 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 477 transitions. Word has length 124 [2023-12-24 16:01:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:32,427 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 477 transitions. [2023-12-24 16:01:32,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 477 transitions. [2023-12-24 16:01:32,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:32,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:32,428 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:32,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:32,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:32,633 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:32,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash -21460592, now seen corresponding path program 1 times [2023-12-24 16:01:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:32,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165911862] [2023-12-24 16:01:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:32,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:32,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:32,634 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:32,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 16:01:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:32,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 16:01:32,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:33,656 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 28 treesize of output 24 [2023-12-24 16:01:33,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:01:33,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 16:01:33,867 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 36 treesize of output 24 [2023-12-24 16:01:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 334 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 16:01:34,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:34,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:34,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165911862] [2023-12-24 16:01:34,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165911862] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:34,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:34,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [25] total 35 [2023-12-24 16:01:34,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230311088] [2023-12-24 16:01:34,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:34,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:01:34,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:34,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:01:34,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1087, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 16:01:34,467 INFO L87 Difference]: Start difference. First operand 397 states and 477 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:35,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:35,659 INFO L93 Difference]: Finished difference Result 847 states and 1048 transitions. [2023-12-24 16:01:35,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 16:01:35,660 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:01:35,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:35,661 INFO L225 Difference]: With dead ends: 847 [2023-12-24 16:01:35,661 INFO L226 Difference]: Without dead ends: 585 [2023-12-24 16:01:35,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 16:01:35,663 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 333 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:35,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1577 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:01:35,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-12-24 16:01:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 426. [2023-12-24 16:01:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 344 states have (on average 1.1744186046511629) internal successors, (404), 346 states have internal predecessors, (404), 56 states have call successors, (56), 25 states have call predecessors, (56), 25 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 16:01:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 516 transitions. [2023-12-24 16:01:35,723 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 516 transitions. Word has length 124 [2023-12-24 16:01:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:35,724 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 516 transitions. [2023-12-24 16:01:35,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 516 transitions. [2023-12-24 16:01:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:35,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:35,725 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:35,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:35,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:35,929 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:35,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:35,930 INFO L85 PathProgramCache]: Analyzing trace with hash 880886353, now seen corresponding path program 1 times [2023-12-24 16:01:35,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:35,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650181655] [2023-12-24 16:01:35,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:35,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:35,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:35,931 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:35,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 16:01:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:36,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:01:36,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:36,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:01:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 10 proven. 250 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 16:01:36,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:36,440 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:01:36,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2023-12-24 16:01:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 16:01:36,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:36,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650181655] [2023-12-24 16:01:36,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650181655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:01:36,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:01:36,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-24 16:01:36,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55578949] [2023-12-24 16:01:36,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:01:36,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:01:36,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:36,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:01:36,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:01:36,486 INFO L87 Difference]: Start difference. First operand 426 states and 516 transitions. Second operand has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-24 16:01:36,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:36,797 INFO L93 Difference]: Finished difference Result 747 states and 903 transitions. [2023-12-24 16:01:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:01:36,801 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) Word has length 124 [2023-12-24 16:01:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:36,803 INFO L225 Difference]: With dead ends: 747 [2023-12-24 16:01:36,803 INFO L226 Difference]: Without dead ends: 456 [2023-12-24 16:01:36,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:01:36,804 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 322 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:36,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 390 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:01:36,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-24 16:01:36,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 442. [2023-12-24 16:01:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 356 states have (on average 1.1573033707865168) internal successors, (412), 358 states have internal predecessors, (412), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 16:01:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 524 transitions. [2023-12-24 16:01:36,850 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 524 transitions. Word has length 124 [2023-12-24 16:01:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:36,851 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 524 transitions. [2023-12-24 16:01:36,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-24 16:01:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 524 transitions. [2023-12-24 16:01:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:36,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:36,852 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:36,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:37,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:37,053 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:37,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:37,053 INFO L85 PathProgramCache]: Analyzing trace with hash -584941359, now seen corresponding path program 1 times [2023-12-24 16:01:37,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:37,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612448887] [2023-12-24 16:01:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:37,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:37,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:37,055 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:37,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 16:01:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:37,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:01:37,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:37,777 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 19 [2023-12-24 16:01:37,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 16:01:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-24 16:01:37,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:37,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612448887] [2023-12-24 16:01:37,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612448887] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:37,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:37,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-24 16:01:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021843247] [2023-12-24 16:01:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:01:37,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:37,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:01:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:01:37,989 INFO L87 Difference]: Start difference. First operand 442 states and 524 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:38,342 INFO L93 Difference]: Finished difference Result 901 states and 1094 transitions. [2023-12-24 16:01:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:01:38,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:01:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:38,345 INFO L225 Difference]: With dead ends: 901 [2023-12-24 16:01:38,345 INFO L226 Difference]: Without dead ends: 602 [2023-12-24 16:01:38,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:01:38,346 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 278 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:38,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 713 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:01:38,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-12-24 16:01:38,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 468. [2023-12-24 16:01:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 382 states have (on average 1.1649214659685865) internal successors, (445), 384 states have internal predecessors, (445), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 16:01:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2023-12-24 16:01:38,394 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 124 [2023-12-24 16:01:38,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:38,394 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2023-12-24 16:01:38,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:38,395 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2023-12-24 16:01:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:38,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:38,395 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:38,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:38,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:38,600 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:38,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1765477338, now seen corresponding path program 1 times [2023-12-24 16:01:38,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:38,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133912122] [2023-12-24 16:01:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:38,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:38,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:38,602 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:38,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 16:01:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:38,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:01:38,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:39,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:01:39,528 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 19 treesize of output 11 [2023-12-24 16:01:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 334 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 16:01:39,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:39,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:01:39,794 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 30 treesize of output 33 [2023-12-24 16:01:39,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:39,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133912122] [2023-12-24 16:01:39,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133912122] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:39,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [340878274] [2023-12-24 16:01:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:39,925 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:01:39,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:01:39,926 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 16:01:39,927 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 16:01:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:40,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 16:01:40,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:43,371 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 16:01:43,520 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 8 treesize of output 4 [2023-12-24 16:01:43,523 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 32 treesize of output 20 [2023-12-24 16:01:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 29 proven. 307 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 16:01:43,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:43,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-24 16:01:43,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:01:43,813 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 30 treesize of output 33 [2023-12-24 16:01:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [340878274] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:43,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:01:43,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 31 [2023-12-24 16:01:43,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276634790] [2023-12-24 16:01:43,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:01:43,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 16:01:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:43,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 16:01:43,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 16:01:43,938 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand has 32 states, 27 states have (on average 4.148148148148148) internal successors, (112), 26 states have internal predecessors, (112), 11 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (32), 7 states have call predecessors, (32), 11 states have call successors, (32) [2023-12-24 16:01:45,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:45,795 INFO L93 Difference]: Finished difference Result 879 states and 1048 transitions. [2023-12-24 16:01:45,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 16:01:45,797 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 4.148148148148148) internal successors, (112), 26 states have internal predecessors, (112), 11 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (32), 7 states have call predecessors, (32), 11 states have call successors, (32) Word has length 124 [2023-12-24 16:01:45,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:45,798 INFO L225 Difference]: With dead ends: 879 [2023-12-24 16:01:45,798 INFO L226 Difference]: Without dead ends: 554 [2023-12-24 16:01:45,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 320 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=602, Invalid=3180, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 16:01:45,801 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 429 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:45,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1064 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 16:01:45,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-24 16:01:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 321. [2023-12-24 16:01:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 268 states have (on average 1.1529850746268657) internal successors, (309), 268 states have internal predecessors, (309), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:01:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 373 transitions. [2023-12-24 16:01:45,845 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 373 transitions. Word has length 124 [2023-12-24 16:01:45,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:45,846 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 373 transitions. [2023-12-24 16:01:45,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 4.148148148148148) internal successors, (112), 26 states have internal predecessors, (112), 11 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (32), 7 states have call predecessors, (32), 11 states have call successors, (32) [2023-12-24 16:01:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 373 transitions. [2023-12-24 16:01:45,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:45,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:45,846 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:45,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:46,055 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 16:01:46,251 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 16:01:46,251 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:46,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:46,252 INFO L85 PathProgramCache]: Analyzing trace with hash 262306184, now seen corresponding path program 1 times [2023-12-24 16:01:46,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:46,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379046454] [2023-12-24 16:01:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:46,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:46,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:46,253 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:46,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 16:01:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:46,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 16:01:46,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:47,341 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 28 treesize of output 24 [2023-12-24 16:01:47,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:01:47,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 16:01:47,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2023-12-24 16:01:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 334 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 16:01:47,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:48,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:48,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379046454] [2023-12-24 16:01:48,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379046454] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:48,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:48,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [25] total 35 [2023-12-24 16:01:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949995178] [2023-12-24 16:01:48,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:48,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:01:48,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:48,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:01:48,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1088, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 16:01:48,226 INFO L87 Difference]: Start difference. First operand 321 states and 373 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:49,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:49,322 INFO L93 Difference]: Finished difference Result 673 states and 800 transitions. [2023-12-24 16:01:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 16:01:49,323 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:01:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:49,324 INFO L225 Difference]: With dead ends: 673 [2023-12-24 16:01:49,324 INFO L226 Difference]: Without dead ends: 447 [2023-12-24 16:01:49,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=234, Invalid=2216, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 16:01:49,325 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 259 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:49,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1630 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:01:49,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-12-24 16:01:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 321. [2023-12-24 16:01:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 268 states have (on average 1.1529850746268657) internal successors, (309), 268 states have internal predecessors, (309), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:01:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 373 transitions. [2023-12-24 16:01:49,362 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 373 transitions. Word has length 124 [2023-12-24 16:01:49,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:49,363 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 373 transitions. [2023-12-24 16:01:49,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 373 transitions. [2023-12-24 16:01:49,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:49,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:49,363 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:49,368 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 (26)] Ended with exit code 0 [2023-12-24 16:01:49,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:49,568 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:49,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:49,568 INFO L85 PathProgramCache]: Analyzing trace with hash 942364554, now seen corresponding path program 1 times [2023-12-24 16:01:49,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:49,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788873547] [2023-12-24 16:01:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:49,569 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:49,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:49,570 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:49,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 16:01:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:49,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:01:49,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:50,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:01:50,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:01:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 16:01:50,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:50,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:50,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788873547] [2023-12-24 16:01:50,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788873547] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:50,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:50,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:01:50,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164115952] [2023-12-24 16:01:50,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:50,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:01:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:50,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:01:50,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:01:50,773 INFO L87 Difference]: Start difference. First operand 321 states and 373 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:50,977 INFO L93 Difference]: Finished difference Result 641 states and 752 transitions. [2023-12-24 16:01:50,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:01:50,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:01:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:50,980 INFO L225 Difference]: With dead ends: 641 [2023-12-24 16:01:50,980 INFO L226 Difference]: Without dead ends: 415 [2023-12-24 16:01:50,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:01:50,981 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 92 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:50,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 495 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:01:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-24 16:01:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 321. [2023-12-24 16:01:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 268 states have (on average 1.1380597014925373) internal successors, (305), 268 states have internal predecessors, (305), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:01:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 369 transitions. [2023-12-24 16:01:51,029 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 369 transitions. Word has length 124 [2023-12-24 16:01:51,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:51,029 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 369 transitions. [2023-12-24 16:01:51,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:51,029 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 369 transitions. [2023-12-24 16:01:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:01:51,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:51,030 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:51,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:51,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:51,239 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:51,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1543132150, now seen corresponding path program 1 times [2023-12-24 16:01:51,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:51,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529241086] [2023-12-24 16:01:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:51,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:51,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:51,240 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:51,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 16:01:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:51,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:01:51,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:52,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:01:52,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:01:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 16:01:52,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:52,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:52,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529241086] [2023-12-24 16:01:52,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529241086] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:52,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:52,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:01:52,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704216689] [2023-12-24 16:01:52,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:52,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:01:52,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:52,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:01:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:01:52,418 INFO L87 Difference]: Start difference. First operand 321 states and 369 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:52,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:52,604 INFO L93 Difference]: Finished difference Result 582 states and 670 transitions. [2023-12-24 16:01:52,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:01:52,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:01:52,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:52,606 INFO L225 Difference]: With dead ends: 582 [2023-12-24 16:01:52,606 INFO L226 Difference]: Without dead ends: 356 [2023-12-24 16:01:52,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:01:52,607 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 87 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:52,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 486 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:01:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-12-24 16:01:52,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 282. [2023-12-24 16:01:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 229 states have (on average 1.1179039301310043) internal successors, (256), 229 states have internal predecessors, (256), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:01:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 320 transitions. [2023-12-24 16:01:52,644 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 320 transitions. Word has length 124 [2023-12-24 16:01:52,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:52,644 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 320 transitions. [2023-12-24 16:01:52,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:52,644 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 320 transitions. [2023-12-24 16:01:52,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 16:01:52,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:52,645 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:52,651 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 16:01:52,849 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 16:01:52,849 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:52,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2015953987, now seen corresponding path program 1 times [2023-12-24 16:01:52,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:52,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063040917] [2023-12-24 16:01:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:52,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:52,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:52,851 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 16:01:52,851 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 16:01:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:53,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:01:53,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:53,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:01:53,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-24 16:01:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:53,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:01:53,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:53,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063040917] [2023-12-24 16:01:53,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063040917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:01:53,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:01:53,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:01:53,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315671183] [2023-12-24 16:01:53,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:53,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:01:53,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:53,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:01:53,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:01:53,095 INFO L87 Difference]: Start difference. First operand 282 states and 320 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:53,191 INFO L93 Difference]: Finished difference Result 496 states and 569 transitions. [2023-12-24 16:01:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:01:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 125 [2023-12-24 16:01:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:53,201 INFO L225 Difference]: With dead ends: 496 [2023-12-24 16:01:53,201 INFO L226 Difference]: Without dead ends: 309 [2023-12-24 16:01:53,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:01:53,202 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 62 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:53,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 414 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:01:53,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-24 16:01:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 282. [2023-12-24 16:01:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 229 states have (on average 1.1004366812227073) internal successors, (252), 229 states have internal predecessors, (252), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:01:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 316 transitions. [2023-12-24 16:01:53,238 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 316 transitions. Word has length 125 [2023-12-24 16:01:53,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:53,238 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 316 transitions. [2023-12-24 16:01:53,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 316 transitions. [2023-12-24 16:01:53,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 16:01:53,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:53,239 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:53,243 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 (29)] Ended with exit code 0 [2023-12-24 16:01:53,443 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 16:01:53,443 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:53,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:53,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1378195620, now seen corresponding path program 1 times [2023-12-24 16:01:53,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:53,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468303887] [2023-12-24 16:01:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:53,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:53,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:53,445 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:53,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 16:01:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:53,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:01:53,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:53,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:01:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 10 proven. 250 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 16:01:53,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:54,059 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:01:54,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2023-12-24 16:01:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 16:01:54,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:54,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468303887] [2023-12-24 16:01:54,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468303887] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:01:54,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:01:54,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-24 16:01:54,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887911330] [2023-12-24 16:01:54,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:01:54,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:01:54,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:01:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:01:54,105 INFO L87 Difference]: Start difference. First operand 282 states and 316 transitions. Second operand has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-24 16:01:54,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:54,415 INFO L93 Difference]: Finished difference Result 481 states and 540 transitions. [2023-12-24 16:01:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:01:54,415 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) Word has length 130 [2023-12-24 16:01:54,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:54,430 INFO L225 Difference]: With dead ends: 481 [2023-12-24 16:01:54,430 INFO L226 Difference]: Without dead ends: 294 [2023-12-24 16:01:54,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:01:54,432 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 108 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:54,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 341 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:01:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-24 16:01:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 282. [2023-12-24 16:01:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 229 states have (on average 1.0960698689956332) internal successors, (251), 229 states have internal predecessors, (251), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:01:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 315 transitions. [2023-12-24 16:01:54,474 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 315 transitions. Word has length 130 [2023-12-24 16:01:54,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:54,475 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 315 transitions. [2023-12-24 16:01:54,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-24 16:01:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 315 transitions. [2023-12-24 16:01:54,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 16:01:54,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:54,482 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:54,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:54,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:54,687 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:54,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:54,687 INFO L85 PathProgramCache]: Analyzing trace with hash 559143432, now seen corresponding path program 1 times [2023-12-24 16:01:54,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:54,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744537560] [2023-12-24 16:01:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:54,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:54,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:54,689 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:54,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 16:01:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:54,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:01:54,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:56,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2023-12-24 16:01:56,081 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 38 treesize of output 26 [2023-12-24 16:01:56,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 16:01:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 16:01:56,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:56,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:56,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744537560] [2023-12-24 16:01:56,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744537560] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:56,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:56,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:01:56,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126400927] [2023-12-24 16:01:56,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:56,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:01:56,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:56,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:01:56,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:01:56,804 INFO L87 Difference]: Start difference. First operand 282 states and 315 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:01:57,463 INFO L93 Difference]: Finished difference Result 723 states and 802 transitions. [2023-12-24 16:01:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:01:57,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 131 [2023-12-24 16:01:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:01:57,466 INFO L225 Difference]: With dead ends: 723 [2023-12-24 16:01:57,466 INFO L226 Difference]: Without dead ends: 442 [2023-12-24 16:01:57,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:01:57,467 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 63 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:01:57,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 432 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:01:57,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-24 16:01:57,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 326. [2023-12-24 16:01:57,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 273 states have (on average 1.0805860805860805) internal successors, (295), 273 states have internal predecessors, (295), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:01:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 359 transitions. [2023-12-24 16:01:57,508 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 359 transitions. Word has length 131 [2023-12-24 16:01:57,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:01:57,509 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 359 transitions. [2023-12-24 16:01:57,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:01:57,509 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 359 transitions. [2023-12-24 16:01:57,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 16:01:57,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:01:57,509 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:01:57,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 16:01:57,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:57,714 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:01:57,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:01:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash 196395554, now seen corresponding path program 1 times [2023-12-24 16:01:57,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:01:57,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314460988] [2023-12-24 16:01:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:01:57,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:01:57,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:01:57,716 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:01:57,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 16:01:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:01:57,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:01:57,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:01:59,031 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 44 treesize of output 32 [2023-12-24 16:01:59,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 16:01:59,038 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 36 treesize of output 24 [2023-12-24 16:01:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 16:01:59,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:01:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:01:59,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:01:59,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314460988] [2023-12-24 16:01:59,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314460988] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:01:59,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:01:59,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 16:01:59,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311728282] [2023-12-24 16:01:59,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:01:59,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:01:59,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:01:59,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:01:59,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:01:59,701 INFO L87 Difference]: Start difference. First operand 326 states and 359 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:02:00,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:02:00,289 INFO L93 Difference]: Finished difference Result 749 states and 823 transitions. [2023-12-24 16:02:00,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:02:00,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 132 [2023-12-24 16:02:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:02:00,293 INFO L225 Difference]: With dead ends: 749 [2023-12-24 16:02:00,293 INFO L226 Difference]: Without dead ends: 424 [2023-12-24 16:02:00,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:02:00,294 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 44 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:02:00,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 331 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:02:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-12-24 16:02:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 326. [2023-12-24 16:02:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 273 states have (on average 1.0732600732600732) internal successors, (293), 273 states have internal predecessors, (293), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:02:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 357 transitions. [2023-12-24 16:02:00,333 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 357 transitions. Word has length 132 [2023-12-24 16:02:00,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:02:00,333 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 357 transitions. [2023-12-24 16:02:00,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:02:00,333 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 357 transitions. [2023-12-24 16:02:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:02:00,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:02:00,334 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:02:00,338 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 (32)] Ended with exit code 0 [2023-12-24 16:02:00,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:02:00,539 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:02:00,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:02:00,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1299852019, now seen corresponding path program 1 times [2023-12-24 16:02:00,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:02:00,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020532750] [2023-12-24 16:02:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:02:00,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:02:00,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:02:00,540 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:02:00,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 16:02:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:02:00,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:02:00,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:02:01,362 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 45 treesize of output 33 [2023-12-24 16:02:01,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 28 [2023-12-24 16:02:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 2 proven. 162 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-12-24 16:02:01,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:02:01,846 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 56 treesize of output 40 [2023-12-24 16:02:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:02:01,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:02:01,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020532750] [2023-12-24 16:02:01,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020532750] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:02:01,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:02:01,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-12-24 16:02:01,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648759728] [2023-12-24 16:02:01,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:02:01,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:02:01,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:02:01,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:02:01,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:02:01,882 INFO L87 Difference]: Start difference. First operand 326 states and 357 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:02:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:02:02,457 INFO L93 Difference]: Finished difference Result 610 states and 670 transitions. [2023-12-24 16:02:02,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:02:02,460 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 133 [2023-12-24 16:02:02,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:02:02,461 INFO L225 Difference]: With dead ends: 610 [2023-12-24 16:02:02,461 INFO L226 Difference]: Without dead ends: 390 [2023-12-24 16:02:02,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:02:02,462 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 135 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:02:02,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 459 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:02:02,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-24 16:02:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 326. [2023-12-24 16:02:02,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 273 states have (on average 1.0695970695970696) internal successors, (292), 273 states have internal predecessors, (292), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:02:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 356 transitions. [2023-12-24 16:02:02,510 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 356 transitions. Word has length 133 [2023-12-24 16:02:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:02:02,511 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 356 transitions. [2023-12-24 16:02:02,511 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:02:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 356 transitions. [2023-12-24 16:02:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 16:02:02,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:02:02,512 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:02:02,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-24 16:02:02,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:02:02,718 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:02:02,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:02:02,718 INFO L85 PathProgramCache]: Analyzing trace with hash 447150569, now seen corresponding path program 1 times [2023-12-24 16:02:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:02:02,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241416713] [2023-12-24 16:02:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:02:02,719 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 16:02:02,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:02:02,721 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:02:02,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 16:02:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:02:02,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:02:02,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:02:03,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2023-12-24 16:02:03,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2023-12-24 16:02:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 2 proven. 162 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-12-24 16:02:03,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:02:04,049 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 56 treesize of output 40 [2023-12-24 16:02:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:02:04,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:02:04,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241416713] [2023-12-24 16:02:04,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241416713] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:02:04,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:02:04,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-12-24 16:02:04,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071642433] [2023-12-24 16:02:04,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:02:04,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:02:04,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:02:04,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:02:04,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:02:04,084 INFO L87 Difference]: Start difference. First operand 326 states and 356 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:02:04,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:02:04,656 INFO L93 Difference]: Finished difference Result 660 states and 722 transitions. [2023-12-24 16:02:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:02:04,657 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 133 [2023-12-24 16:02:04,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:02:04,658 INFO L225 Difference]: With dead ends: 660 [2023-12-24 16:02:04,658 INFO L226 Difference]: Without dead ends: 440 [2023-12-24 16:02:04,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:02:04,659 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 87 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:02:04,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 371 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:02:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-24 16:02:04,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 326. [2023-12-24 16:02:04,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 273 states have (on average 1.065934065934066) internal successors, (291), 273 states have internal predecessors, (291), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:02:04,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 355 transitions. [2023-12-24 16:02:04,700 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 355 transitions. Word has length 133 [2023-12-24 16:02:04,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:02:04,700 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 355 transitions. [2023-12-24 16:02:04,700 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, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:02:04,700 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 355 transitions. [2023-12-24 16:02:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 16:02:04,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:02:04,701 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:02:04,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 16:02:04,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:02:04,912 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:02:04,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:02:04,913 INFO L85 PathProgramCache]: Analyzing trace with hash -307631170, now seen corresponding path program 1 times [2023-12-24 16:02:04,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:02:04,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019610986] [2023-12-24 16:02:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:02:04,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:02:04,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:02:04,914 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:02:04,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 16:02:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:02:05,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 16:02:05,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:02:05,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:02:05,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:02:05,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2023-12-24 16:02:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 42 proven. 60 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-24 16:02:05,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:02:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:02:06,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:02:06,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019610986] [2023-12-24 16:02:06,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019610986] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:02:06,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:02:06,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21] total 31 [2023-12-24 16:02:06,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809473947] [2023-12-24 16:02:06,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:02:06,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:02:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:02:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:02:06,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:02:06,270 INFO L87 Difference]: Start difference. First operand 326 states and 355 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:02:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:02:06,891 INFO L93 Difference]: Finished difference Result 507 states and 550 transitions. [2023-12-24 16:02:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:02:06,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 137 [2023-12-24 16:02:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:02:06,893 INFO L225 Difference]: With dead ends: 507 [2023-12-24 16:02:06,893 INFO L226 Difference]: Without dead ends: 505 [2023-12-24 16:02:06,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 16:02:06,894 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 106 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:02:06,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1107 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:02:06,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-12-24 16:02:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 370. [2023-12-24 16:02:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 317 states have (on average 1.0630914826498423) internal successors, (337), 317 states have internal predecessors, (337), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:02:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 401 transitions. [2023-12-24 16:02:06,938 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 401 transitions. Word has length 137 [2023-12-24 16:02:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:02:06,939 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 401 transitions. [2023-12-24 16:02:06,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:02:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 401 transitions. [2023-12-24 16:02:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 16:02:06,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:02:06,940 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:02:06,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-12-24 16:02:07,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:02:07,140 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:02:07,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:02:07,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1116977796, now seen corresponding path program 1 times [2023-12-24 16:02:07,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:02:07,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871557087] [2023-12-24 16:02:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:02:07,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:02:07,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:02:07,142 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:02:07,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 16:02:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:02:07,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:02:07,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:02:07,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2023-12-24 16:02:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 26 proven. 276 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-24 16:02:07,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:02:08,085 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:02:08,085 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 30 treesize of output 25 [2023-12-24 16:02:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 39 proven. 48 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-12-24 16:02:08,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:02:08,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871557087] [2023-12-24 16:02:08,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871557087] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:02:08,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:02:08,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2023-12-24 16:02:08,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127627921] [2023-12-24 16:02:08,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:02:08,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 16:02:08,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:02:08,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 16:02:08,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:02:08,130 INFO L87 Difference]: Start difference. First operand 370 states and 401 transitions. Second operand has 20 states, 16 states have (on average 7.5) internal successors, (120), 18 states have internal predecessors, (120), 7 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) [2023-12-24 16:02:08,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:02:08,593 INFO L93 Difference]: Finished difference Result 646 states and 700 transitions. [2023-12-24 16:02:08,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 16:02:08,594 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 7.5) internal successors, (120), 18 states have internal predecessors, (120), 7 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) Word has length 137 [2023-12-24 16:02:08,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:02:08,595 INFO L225 Difference]: With dead ends: 646 [2023-12-24 16:02:08,595 INFO L226 Difference]: Without dead ends: 382 [2023-12-24 16:02:08,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:02:08,596 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 318 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:02:08,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 512 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:02:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-12-24 16:02:08,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 370. [2023-12-24 16:02:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 317 states have (on average 1.0567823343848581) internal successors, (335), 317 states have internal predecessors, (335), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:02:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 399 transitions. [2023-12-24 16:02:08,646 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 399 transitions. Word has length 137 [2023-12-24 16:02:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:02:08,647 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 399 transitions. [2023-12-24 16:02:08,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 7.5) internal successors, (120), 18 states have internal predecessors, (120), 7 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) [2023-12-24 16:02:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 399 transitions. [2023-12-24 16:02:08,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 16:02:08,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:02:08,647 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:02:08,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-24 16:02:08,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:02:08,853 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:02:08,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:02:08,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1078572224, now seen corresponding path program 1 times [2023-12-24 16:02:08,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:02:08,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479836351] [2023-12-24 16:02:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:02:08,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:02:08,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:02:08,854 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 16:02:08,855 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 16:02:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:02:09,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:02:09,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:02:09,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2023-12-24 16:02:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 26 proven. 276 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-24 16:02:09,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:02:09,691 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:02:09,692 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 30 treesize of output 25 [2023-12-24 16:02:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 39 proven. 48 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-12-24 16:02:09,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:02:09,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479836351] [2023-12-24 16:02:09,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479836351] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:02:09,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:02:09,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2023-12-24 16:02:09,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203518248] [2023-12-24 16:02:09,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:02:09,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 16:02:09,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:02:09,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 16:02:09,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:02:09,754 INFO L87 Difference]: Start difference. First operand 370 states and 399 transitions. Second operand has 20 states, 16 states have (on average 6.1875) internal successors, (99), 18 states have internal predecessors, (99), 7 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) [2023-12-24 16:02:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:02:10,213 INFO L93 Difference]: Finished difference Result 596 states and 645 transitions. [2023-12-24 16:02:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 16:02:10,214 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 6.1875) internal successors, (99), 18 states have internal predecessors, (99), 7 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) Word has length 137 [2023-12-24 16:02:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:02:10,214 INFO L225 Difference]: With dead ends: 596 [2023-12-24 16:02:10,214 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 16:02:10,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:02:10,215 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 236 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:02:10,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 490 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:02:10,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 16:02:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 16:02:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 16:02:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 16:02:10,216 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 137 [2023-12-24 16:02:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:02:10,216 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 16:02:10,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 6.1875) internal successors, (99), 18 states have internal predecessors, (99), 7 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) [2023-12-24 16:02:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 16:02:10,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 16:02:10,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 16:02:10,223 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 16:02:10,423 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 16:02:10,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:02:24,383 WARN L293 SmtUtils]: Spent 13.91s on a formula simplification. DAG size of input: 224 DAG size of output: 225 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:02:37,653 WARN L293 SmtUtils]: Spent 11.52s on a formula simplification. DAG size of input: 217 DAG size of output: 218 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:02:49,855 WARN L293 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 237 DAG size of output: 238 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:03:02,861 WARN L293 SmtUtils]: Spent 12.96s on a formula simplification. DAG size of input: 231 DAG size of output: 232 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:03:15,603 WARN L293 SmtUtils]: Spent 12.60s on a formula simplification. DAG size of input: 237 DAG size of output: 238 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:03:56,522 WARN L293 SmtUtils]: Spent 40.92s on a formula simplification. DAG size of input: 259 DAG size of output: 281 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:04:08,687 WARN L293 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 237 DAG size of output: 238 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:04:20,929 WARN L293 SmtUtils]: Spent 12.24s on a formula simplification. DAG size of input: 237 DAG size of output: 238 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:04:31,226 WARN L293 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 189 DAG size of output: 191 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:04:46,409 WARN L293 SmtUtils]: Spent 14.67s on a formula simplification. DAG size of input: 209 DAG size of output: 234 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:05:00,165 WARN L293 SmtUtils]: Spent 12.90s on a formula simplification. DAG size of input: 209 DAG size of output: 204 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 16:06:10,682 WARN L293 SmtUtils]: Spent 1.02m on a formula simplification. DAG size of input: 233 DAG size of output: 228 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-24 16:15:29,847 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∧-6-2-6-7-4-7-15-7-15-7-15-7-15-7-15-7-15-6-15-5-15-5-15-5-13-5-13-5-12-4-12-4-11-4-11-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-68-16-7-16-7-16-7-16-7-16-7-15-6-15-5-15-5-15-5-13-5-13-5-12-4-12-4-11-4-11-1 context. [2023-12-24 16:15:29,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:15:29,851 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 16:15:29,852 INFO L158 Benchmark]: Toolchain (without parser) took 875907.26ms. Allocated memory was 186.6MB in the beginning and 979.4MB in the end (delta: 792.7MB). Free memory was 129.4MB in the beginning and 888.1MB in the end (delta: -758.6MB). Peak memory consumption was 35.6MB. Max. memory is 8.0GB. [2023-12-24 16:15:29,853 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 186.6MB. Free memory was 135.9MB in the beginning and 135.8MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 16:15:29,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.01ms. Allocated memory is still 186.6MB. Free memory was 129.1MB in the beginning and 114.3MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-24 16:15:29,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.91ms. Allocated memory is still 186.6MB. Free memory was 114.3MB in the beginning and 111.0MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 16:15:29,853 INFO L158 Benchmark]: Boogie Preprocessor took 70.79ms. Allocated memory is still 186.6MB. Free memory was 111.0MB in the beginning and 106.0MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 16:15:29,853 INFO L158 Benchmark]: RCFGBuilder took 712.21ms. Allocated memory was 186.6MB in the beginning and 302.0MB in the end (delta: 115.3MB). Free memory was 106.0MB in the beginning and 234.9MB in the end (delta: -128.8MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. [2023-12-24 16:15:29,853 INFO L158 Benchmark]: TraceAbstraction took 874843.85ms. Allocated memory was 302.0MB in the beginning and 979.4MB in the end (delta: 677.4MB). Free memory was 234.3MB in the beginning and 888.1MB in the end (delta: -653.7MB). Peak memory consumption was 23.6MB. Max. memory is 8.0GB. [2023-12-24 16:15:29,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 186.6MB. Free memory was 135.9MB in the beginning and 135.8MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.01ms. Allocated memory is still 186.6MB. Free memory was 129.1MB in the beginning and 114.3MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.91ms. Allocated memory is still 186.6MB. Free memory was 114.3MB in the beginning and 111.0MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 70.79ms. Allocated memory is still 186.6MB. Free memory was 111.0MB in the beginning and 106.0MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 712.21ms. Allocated memory was 186.6MB in the beginning and 302.0MB in the end (delta: 115.3MB). Free memory was 106.0MB in the beginning and 234.9MB in the end (delta: -128.8MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. * TraceAbstraction took 874843.85ms. Allocated memory was 302.0MB in the beginning and 979.4MB in the end (delta: 677.4MB). Free memory was 234.3MB in the beginning and 888.1MB in the end (delta: -653.7MB). Peak memory consumption was 23.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-2-5-2-19-2-28-2-10-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-31-19-2-16-2-28-2-10-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown