/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 15:14:16,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 15:14:16,358 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 15:14:16,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 15:14:16,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 15:14:16,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 15:14:16,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 15:14:16,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 15:14:16,390 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 15:14:16,393 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 15:14:16,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 15:14:16,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 15:14:16,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 15:14:16,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 15:14:16,396 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 15:14:16,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 15:14:16,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 15:14:16,396 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 15:14:16,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 15:14:16,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 15:14:16,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 15:14:16,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 15:14:16,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 15:14:16,398 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 15:14:16,398 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 15:14:16,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 15:14:16,399 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 15:14:16,399 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 15:14:16,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 15:14:16,399 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 15:14:16,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 15:14:16,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 15:14:16,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 15:14:16,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 15:14:16,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:14:16,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 15:14:16,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 15:14:16,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 15:14:16,401 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 15:14:16,401 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 15:14:16,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 15:14:16,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 15:14:16,402 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 15:14:16,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 15:14:16,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 15:14:16,402 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 15:14:16,402 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 15:14:16,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 15:14:16,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 15:14:16,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 15:14:16,630 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 15:14:16,631 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 15:14:16,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i [2023-12-24 15:14:17,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 15:14:17,838 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 15:14:17,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i [2023-12-24 15:14:17,845 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c37ca725e/0ae5c901122d468286e3aaeaa8455496/FLAGb979de841 [2023-12-24 15:14:17,857 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c37ca725e/0ae5c901122d468286e3aaeaa8455496 [2023-12-24 15:14:17,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 15:14:17,859 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 15:14:17,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 15:14:17,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 15:14:17,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 15:14:17,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:14:17" (1/1) ... [2023-12-24 15:14:17,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51076572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:17, skipping insertion in model container [2023-12-24 15:14:17,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:14:17" (1/1) ... [2023-12-24 15:14:17,895 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 15:14:18,021 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i[917,930] [2023-12-24 15:14:18,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:14:18,075 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 15:14:18,085 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i[917,930] [2023-12-24 15:14:18,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:14:18,148 INFO L206 MainTranslator]: Completed translation [2023-12-24 15:14:18,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18 WrapperNode [2023-12-24 15:14:18,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 15:14:18,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 15:14:18,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 15:14:18,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 15:14:18,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,196 INFO L138 Inliner]: procedures = 33, calls = 129, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 355 [2023-12-24 15:14:18,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 15:14:18,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 15:14:18,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 15:14:18,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 15:14:18,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,218 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,233 INFO L175 MemorySlicer]: Split 96 memory accesses to 5 slices as follows [2, 12, 32, 24, 26]. 33 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 2, 4, 3, 3]. The 16 writes are split as follows [0, 2, 6, 4, 4]. [2023-12-24 15:14:18,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,245 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 15:14:18,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 15:14:18,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 15:14:18,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 15:14:18,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (1/1) ... [2023-12-24 15:14:18,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:14:18,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 15:14:18,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 15:14:18,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 15:14:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 15:14:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 15:14:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 15:14:18,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 15:14:18,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 15:14:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 15:14:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 15:14:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 15:14:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 15:14:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 15:14:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 15:14:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 15:14:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 15:14:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 15:14:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 15:14:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 15:14:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 15:14:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 15:14:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 15:14:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 15:14:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 15:14:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 15:14:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 15:14:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 15:14:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 15:14:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 15:14:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 15:14:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 15:14:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 15:14:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 15:14:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 15:14:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 15:14:18,343 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 15:14:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 15:14:18,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 15:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 15:14:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 15:14:18,463 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 15:14:18,465 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 15:14:18,920 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 15:14:18,958 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 15:14:18,958 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 15:14:18,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:14:18 BoogieIcfgContainer [2023-12-24 15:14:18,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 15:14:18,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 15:14:18,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 15:14:18,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 15:14:18,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 03:14:17" (1/3) ... [2023-12-24 15:14:18,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618ac6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:14:18, skipping insertion in model container [2023-12-24 15:14:18,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:14:18" (2/3) ... [2023-12-24 15:14:18,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618ac6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:14:18, skipping insertion in model container [2023-12-24 15:14:18,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:14:18" (3/3) ... [2023-12-24 15:14:18,973 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-59.i [2023-12-24 15:14:18,990 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 15:14:18,990 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 15:14:19,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 15:14:19,031 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;@79ba1c9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 15:14:19,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 15:14:19,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 57 states have internal predecessors, (79), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 15:14:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 15:14:19,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:14:19,062 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:14:19,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:14:19,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:14:19,067 INFO L85 PathProgramCache]: Analyzing trace with hash 675290820, now seen corresponding path program 1 times [2023-12-24 15:14:19,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:14:19,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518681215] [2023-12-24 15:14:19,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:19,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:14:19,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:14:19,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:14:19,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 15:14:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:19,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 15:14:19,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:14:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-24 15:14:19,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:14:19,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:14:19,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518681215] [2023-12-24 15:14:19,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518681215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:14:19,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:14:19,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 15:14:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160719947] [2023-12-24 15:14:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:14:19,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 15:14:19,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:14:19,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 15:14:19,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 15:14:19,428 INFO L87 Difference]: Start difference. First operand has 77 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 57 states have internal predecessors, (79), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 15:14:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:14:19,485 INFO L93 Difference]: Finished difference Result 151 states and 246 transitions. [2023-12-24 15:14:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 15:14:19,487 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 126 [2023-12-24 15:14:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:14:19,494 INFO L225 Difference]: With dead ends: 151 [2023-12-24 15:14:19,494 INFO L226 Difference]: Without dead ends: 75 [2023-12-24 15:14:19,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 15:14:19,501 INFO L413 NwaCegarLoop]: 106 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, 106 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:14:19,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:14:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-24 15:14:19,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-24 15:14:19,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 15:14:19,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 110 transitions. [2023-12-24 15:14:19,546 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 110 transitions. Word has length 126 [2023-12-24 15:14:19,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:14:19,546 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 110 transitions. [2023-12-24 15:14:19,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 15:14:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions. [2023-12-24 15:14:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 15:14:19,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:14:19,555 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:14:19,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 15:14:19,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:14:19,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:14:19,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:14:19,761 INFO L85 PathProgramCache]: Analyzing trace with hash -375430752, now seen corresponding path program 1 times [2023-12-24 15:14:19,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:14:19,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971310257] [2023-12-24 15:14:19,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:19,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:14:19,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:14:19,774 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:14:19,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 15:14:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:19,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 15:14:19,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:14:20,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 15:14:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:14:20,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:14:20,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:14:20,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971310257] [2023-12-24 15:14:20,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971310257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:14:20,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:14:20,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 15:14:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596878317] [2023-12-24 15:14:20,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:14:20,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 15:14:20,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:14:20,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 15:14:20,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 15:14:20,588 INFO L87 Difference]: Start difference. First operand 75 states and 110 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:14:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:14:21,084 INFO L93 Difference]: Finished difference Result 224 states and 329 transitions. [2023-12-24 15:14:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 15:14:21,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 126 [2023-12-24 15:14:21,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:14:21,086 INFO L225 Difference]: With dead ends: 224 [2023-12-24 15:14:21,086 INFO L226 Difference]: Without dead ends: 150 [2023-12-24 15:14:21,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:14:21,088 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 72 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:14:21,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 245 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 15:14:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-24 15:14:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2023-12-24 15:14:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 102 states have (on average 1.3235294117647058) internal successors, (135), 102 states have internal predecessors, (135), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 15:14:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 207 transitions. [2023-12-24 15:14:21,105 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 207 transitions. Word has length 126 [2023-12-24 15:14:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:14:21,105 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 207 transitions. [2023-12-24 15:14:21,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:14:21,105 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 207 transitions. [2023-12-24 15:14:21,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 15:14:21,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:14:21,106 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:14:21,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-24 15:14:21,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:14:21,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:14:21,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:14:21,312 INFO L85 PathProgramCache]: Analyzing trace with hash 24518000, now seen corresponding path program 1 times [2023-12-24 15:14:21,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:14:21,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677457242] [2023-12-24 15:14:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:21,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:14:21,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:14:21,314 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:14:21,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 15:14:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:21,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 15:14:21,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:14:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:14:21,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:14:21,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:14:21,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677457242] [2023-12-24 15:14:21,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677457242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:14:21,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:14:21,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 15:14:21,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694725477] [2023-12-24 15:14:21,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:14:21,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 15:14:21,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:14:21,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 15:14:21,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:14:21,492 INFO L87 Difference]: Start difference. First operand 141 states and 207 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:14:21,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:14:21,519 INFO L93 Difference]: Finished difference Result 238 states and 353 transitions. [2023-12-24 15:14:21,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 15:14:21,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 128 [2023-12-24 15:14:21,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:14:21,521 INFO L225 Difference]: With dead ends: 238 [2023-12-24 15:14:21,521 INFO L226 Difference]: Without dead ends: 143 [2023-12-24 15:14:21,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:14:21,523 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:14:21,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 205 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:14:21,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-24 15:14:21,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-12-24 15:14:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 104 states have internal predecessors, (137), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 15:14:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 209 transitions. [2023-12-24 15:14:21,554 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 209 transitions. Word has length 128 [2023-12-24 15:14:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:14:21,554 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 209 transitions. [2023-12-24 15:14:21,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:14:21,555 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 209 transitions. [2023-12-24 15:14:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 15:14:21,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:14:21,556 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:14:21,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 15:14:21,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:14:21,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:14:21,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:14:21,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1563829902, now seen corresponding path program 1 times [2023-12-24 15:14:21,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:14:21,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52383594] [2023-12-24 15:14:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:21,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:14:21,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:14:21,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:14:21,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 15:14:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:21,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 15:14:21,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:14:22,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:14:22,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2023-12-24 15:14:22,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-12-24 15:14:22,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:14:22,747 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 27 treesize of output 13 [2023-12-24 15:14:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-12-24 15:14:22,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:14:22,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:14:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52383594] [2023-12-24 15:14:22,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52383594] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:14:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2107518381] [2023-12-24 15:14:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:22,832 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:14:22,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:14:22,873 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:14:22,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-24 15:14:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:23,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 15:14:23,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:14:24,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 15:14:24,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 15:14:24,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 15:14:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 112 proven. 128 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-24 15:14:24,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:14:24,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2107518381] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:14:24,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:14:24,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2023-12-24 15:14:24,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751113986] [2023-12-24 15:14:24,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:14:24,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 15:14:24,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:14:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 15:14:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:14:24,760 INFO L87 Difference]: Start difference. First operand 143 states and 209 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 5 states have call predecessors, (36), 5 states have call successors, (36) [2023-12-24 15:14:25,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:14:25,128 INFO L93 Difference]: Finished difference Result 309 states and 454 transitions. [2023-12-24 15:14:25,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 15:14:25,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 5 states have call predecessors, (36), 5 states have call successors, (36) Word has length 128 [2023-12-24 15:14:25,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:14:25,130 INFO L225 Difference]: With dead ends: 309 [2023-12-24 15:14:25,130 INFO L226 Difference]: Without dead ends: 218 [2023-12-24 15:14:25,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-24 15:14:25,131 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 123 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:14:25,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 543 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:14:25,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-24 15:14:25,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2023-12-24 15:14:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 158 states have (on average 1.3164556962025316) internal successors, (208), 158 states have internal predecessors, (208), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 15:14:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 316 transitions. [2023-12-24 15:14:25,153 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 316 transitions. Word has length 128 [2023-12-24 15:14:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:14:25,153 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 316 transitions. [2023-12-24 15:14:25,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 5 states have call predecessors, (36), 5 states have call successors, (36) [2023-12-24 15:14:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 316 transitions. [2023-12-24 15:14:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 15:14:25,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:14:25,154 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:14:25,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 15:14:25,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-24 15:14:25,560 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=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:14:25,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:14:25,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:14:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1305664464, now seen corresponding path program 1 times [2023-12-24 15:14:25,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:14:25,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390329136] [2023-12-24 15:14:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:25,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:14:25,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:14:25,562 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 15:14:25,564 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 15:14:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:25,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:14:25,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:14:25,728 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 19 treesize of output 11 [2023-12-24 15:14:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:14:25,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:14:25,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:14:25,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390329136] [2023-12-24 15:14:25,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390329136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:14:25,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:14:25,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:14:25,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252562350] [2023-12-24 15:14:25,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:14:25,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:14:25,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:14:25,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:14:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:14:25,757 INFO L87 Difference]: Start difference. First operand 216 states and 316 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:14:26,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:14:26,086 INFO L93 Difference]: Finished difference Result 459 states and 667 transitions. [2023-12-24 15:14:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 15:14:26,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 128 [2023-12-24 15:14:26,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:14:26,098 INFO L225 Difference]: With dead ends: 459 [2023-12-24 15:14:26,098 INFO L226 Difference]: Without dead ends: 298 [2023-12-24 15:14:26,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:14:26,099 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 129 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:14:26,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 367 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:14:26,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-24 15:14:26,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 278. [2023-12-24 15:14:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 203 states have (on average 1.29064039408867) internal successors, (262), 204 states have internal predecessors, (262), 68 states have call successors, (68), 6 states have call predecessors, (68), 6 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-24 15:14:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 398 transitions. [2023-12-24 15:14:26,143 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 398 transitions. Word has length 128 [2023-12-24 15:14:26,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:14:26,143 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 398 transitions. [2023-12-24 15:14:26,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:14:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 398 transitions. [2023-12-24 15:14:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 15:14:26,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:14:26,144 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:14:26,151 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 15:14:26,349 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 15:14:26,350 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:14:26,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:14:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash -625606094, now seen corresponding path program 1 times [2023-12-24 15:14:26,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:14:26,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816913545] [2023-12-24 15:14:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:26,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:14:26,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:14:26,352 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:14:26,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 15:14:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:26,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 15:14:26,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:14:30,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:14:31,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:14:31,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-12-24 15:14:31,736 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:14:31,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2023-12-24 15:14:32,499 INFO L349 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2023-12-24 15:14:32,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-24 15:14:32,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:14:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 38 proven. 440 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-12-24 15:14:33,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:14:33,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:14:33,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816913545] [2023-12-24 15:14:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816913545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:14:33,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1737967559] [2023-12-24 15:14:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:33,817 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:14:33,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:14:33,818 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:14:33,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-24 15:14:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:34,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-24 15:14:34,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:14:39,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:14:41,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 15:14:42,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 15:14:43,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2023-12-24 15:14:44,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:14:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 38 proven. 440 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-12-24 15:14:44,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:14:45,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1737967559] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:14:45,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:14:45,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 49 [2023-12-24 15:14:45,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930616996] [2023-12-24 15:14:45,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:14:45,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-24 15:14:45,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:14:45,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-24 15:14:45,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=2619, Unknown=0, NotChecked=0, Total=2970 [2023-12-24 15:14:45,252 INFO L87 Difference]: Start difference. First operand 278 states and 398 transitions. Second operand has 50 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 39 states have internal predecessors, (117), 16 states have call successors, (36), 12 states have call predecessors, (36), 16 states have return successors, (36), 14 states have call predecessors, (36), 16 states have call successors, (36) [2023-12-24 15:15:05,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:15:05,871 INFO L93 Difference]: Finished difference Result 738 states and 1006 transitions. [2023-12-24 15:15:05,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-24 15:15:05,872 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 39 states have internal predecessors, (117), 16 states have call successors, (36), 12 states have call predecessors, (36), 16 states have return successors, (36), 14 states have call predecessors, (36), 16 states have call successors, (36) Word has length 128 [2023-12-24 15:15:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:15:05,875 INFO L225 Difference]: With dead ends: 738 [2023-12-24 15:15:05,875 INFO L226 Difference]: Without dead ends: 526 [2023-12-24 15:15:05,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4361 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=2398, Invalid=11882, Unknown=0, NotChecked=0, Total=14280 [2023-12-24 15:15:05,879 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1825 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 761 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:15:05,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 1703 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [761 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-24 15:15:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-24 15:15:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 410. [2023-12-24 15:15:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 309 states have (on average 1.2588996763754046) internal successors, (389), 311 states have internal predecessors, (389), 80 states have call successors, (80), 20 states have call predecessors, (80), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 15:15:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 549 transitions. [2023-12-24 15:15:05,924 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 549 transitions. Word has length 128 [2023-12-24 15:15:05,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:15:05,924 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 549 transitions. [2023-12-24 15:15:05,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 39 states have internal predecessors, (117), 16 states have call successors, (36), 12 states have call predecessors, (36), 16 states have return successors, (36), 14 states have call predecessors, (36), 16 states have call successors, (36) [2023-12-24 15:15:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 549 transitions. [2023-12-24 15:15:05,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 15:15:05,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:15:05,926 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:15:05,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-24 15:15:06,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 15:15:06,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:06,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:15:06,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:15:06,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1434952720, now seen corresponding path program 1 times [2023-12-24 15:15:06,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:15:06,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144251090] [2023-12-24 15:15:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:15:06,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:06,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:15:06,340 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:15:06,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 15:15:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:15:06,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:15:06,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:15:06,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:15:06,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:15:06,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144251090] [2023-12-24 15:15:06,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144251090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:15:06,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:15:06,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 15:15:06,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304317616] [2023-12-24 15:15:06,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:15:06,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:15:06,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:15:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:15:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:15:06,658 INFO L87 Difference]: Start difference. First operand 410 states and 549 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:15:06,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:15:06,987 INFO L93 Difference]: Finished difference Result 745 states and 1004 transitions. [2023-12-24 15:15:06,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:15:06,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 128 [2023-12-24 15:15:06,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:15:06,990 INFO L225 Difference]: With dead ends: 745 [2023-12-24 15:15:06,990 INFO L226 Difference]: Without dead ends: 426 [2023-12-24 15:15:06,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:15:06,991 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 67 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:15:06,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 339 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:15:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-24 15:15:07,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 410. [2023-12-24 15:15:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 309 states have (on average 1.249190938511327) internal successors, (386), 311 states have internal predecessors, (386), 80 states have call successors, (80), 20 states have call predecessors, (80), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 15:15:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 546 transitions. [2023-12-24 15:15:07,043 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 546 transitions. Word has length 128 [2023-12-24 15:15:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:15:07,043 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 546 transitions. [2023-12-24 15:15:07,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:15:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 546 transitions. [2023-12-24 15:15:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 15:15:07,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:15:07,045 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:15:07,051 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 (10)] Ended with exit code 0 [2023-12-24 15:15:07,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:07,251 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:15:07,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:15:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash 75458484, now seen corresponding path program 1 times [2023-12-24 15:15:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:15:07,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819957738] [2023-12-24 15:15:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:15:07,252 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 15:15:07,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:15:07,252 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 15:15:07,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 15:15:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:15:07,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:15:07,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:15:07,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:15:07,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:15:07,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819957738] [2023-12-24 15:15:07,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819957738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:15:07,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:15:07,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 15:15:07,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106099211] [2023-12-24 15:15:07,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:15:07,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:15:07,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:15:07,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:15:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:15:07,562 INFO L87 Difference]: Start difference. First operand 410 states and 546 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:15:07,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:15:07,879 INFO L93 Difference]: Finished difference Result 746 states and 1001 transitions. [2023-12-24 15:15:07,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:15:07,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 128 [2023-12-24 15:15:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:15:07,882 INFO L225 Difference]: With dead ends: 746 [2023-12-24 15:15:07,882 INFO L226 Difference]: Without dead ends: 421 [2023-12-24 15:15:07,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:15:07,883 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 69 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:15:07,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 340 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:15:07,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-24 15:15:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 405. [2023-12-24 15:15:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 304 states have (on average 1.243421052631579) internal successors, (378), 306 states have internal predecessors, (378), 80 states have call successors, (80), 20 states have call predecessors, (80), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 15:15:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 538 transitions. [2023-12-24 15:15:07,939 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 538 transitions. Word has length 128 [2023-12-24 15:15:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:15:07,939 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 538 transitions. [2023-12-24 15:15:07,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:15:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 538 transitions. [2023-12-24 15:15:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 15:15:07,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:15:07,940 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:15:07,947 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 (11)] Ended with exit code 0 [2023-12-24 15:15:08,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:08,145 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:15:08,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:15:08,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1127153647, now seen corresponding path program 1 times [2023-12-24 15:15:08,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:15:08,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996024524] [2023-12-24 15:15:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:15:08,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:08,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:15:08,147 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:15:08,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 15:15:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:15:08,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 15:15:08,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:10,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:15:10,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2023-12-24 15:15:10,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2023-12-24 15:15:11,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:15:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 38 proven. 290 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-24 15:15:11,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:15:11,329 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 35 [2023-12-24 15:15:11,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:15:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996024524] [2023-12-24 15:15:11,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996024524] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:15:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1149294356] [2023-12-24 15:15:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:15:11,501 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:15:11,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:15:11,502 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:15:11,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-24 15:15:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:15:12,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 15:15:12,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:14,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:15:15,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 15:15:16,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 15:15:16,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:15:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 38 proven. 290 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-24 15:15:17,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:15:17,311 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 35 [2023-12-24 15:15:17,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1149294356] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:15:17,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:15:17,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2023-12-24 15:15:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360555088] [2023-12-24 15:15:17,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:15:17,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 15:15:17,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:15:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 15:15:17,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2023-12-24 15:15:17,436 INFO L87 Difference]: Start difference. First operand 405 states and 538 transitions. Second operand has 29 states, 25 states have (on average 4.04) internal successors, (101), 23 states have internal predecessors, (101), 10 states have call successors, (36), 8 states have call predecessors, (36), 10 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) [2023-12-24 15:15:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:15:21,625 INFO L93 Difference]: Finished difference Result 823 states and 1103 transitions. [2023-12-24 15:15:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 15:15:21,626 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.04) internal successors, (101), 23 states have internal predecessors, (101), 10 states have call successors, (36), 8 states have call predecessors, (36), 10 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) Word has length 129 [2023-12-24 15:15:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:15:21,628 INFO L225 Difference]: With dead ends: 823 [2023-12-24 15:15:21,628 INFO L226 Difference]: Without dead ends: 522 [2023-12-24 15:15:21,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=558, Invalid=2198, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 15:15:21,631 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 628 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:15:21,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 1337 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 15:15:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-12-24 15:15:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 357. [2023-12-24 15:15:21,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 266 states have (on average 1.2481203007518797) internal successors, (332), 268 states have internal predecessors, (332), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 15:15:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 476 transitions. [2023-12-24 15:15:21,686 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 476 transitions. Word has length 129 [2023-12-24 15:15:21,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:15:21,686 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 476 transitions. [2023-12-24 15:15:21,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.04) internal successors, (101), 23 states have internal predecessors, (101), 10 states have call successors, (36), 8 states have call predecessors, (36), 10 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) [2023-12-24 15:15:21,686 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 476 transitions. [2023-12-24 15:15:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 15:15:21,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:15:21,687 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:15:21,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-24 15:15:21,898 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 (12)] Ended with exit code 0 [2023-12-24 15:15:22,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:22,099 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:15:22,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:15:22,099 INFO L85 PathProgramCache]: Analyzing trace with hash 118258784, now seen corresponding path program 1 times [2023-12-24 15:15:22,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:15:22,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784684638] [2023-12-24 15:15:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:15:22,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:22,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:15:22,101 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 15:15:22,102 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 15:15:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:15:22,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 15:15:22,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:23,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2023-12-24 15:15:23,749 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:15:23,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 40 [2023-12-24 15:15:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 32 proven. 348 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 15:15:23,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:15:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:15:23,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:15:23,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784684638] [2023-12-24 15:15:23,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784684638] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:15:23,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:15:23,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 18 [2023-12-24 15:15:23,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811633250] [2023-12-24 15:15:23,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:15:23,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:15:23,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:15:23,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:15:23,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-24 15:15:23,948 INFO L87 Difference]: Start difference. First operand 357 states and 476 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:15:24,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:15:24,220 INFO L93 Difference]: Finished difference Result 837 states and 1139 transitions. [2023-12-24 15:15:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 15:15:24,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 130 [2023-12-24 15:15:24,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:15:24,223 INFO L225 Difference]: With dead ends: 837 [2023-12-24 15:15:24,223 INFO L226 Difference]: Without dead ends: 572 [2023-12-24 15:15:24,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2023-12-24 15:15:24,224 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 115 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:15:24,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 564 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:15:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-12-24 15:15:24,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 462. [2023-12-24 15:15:24,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 361 states have (on average 1.265927977839335) internal successors, (457), 365 states have internal predecessors, (457), 80 states have call successors, (80), 20 states have call predecessors, (80), 20 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 15:15:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 617 transitions. [2023-12-24 15:15:24,267 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 617 transitions. Word has length 130 [2023-12-24 15:15:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:15:24,267 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 617 transitions. [2023-12-24 15:15:24,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:15:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 617 transitions. [2023-12-24 15:15:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 15:15:24,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:15:24,268 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:15:24,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 15:15:24,473 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 15:15:24,474 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:15:24,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:15:24,474 INFO L85 PathProgramCache]: Analyzing trace with hash -832602497, now seen corresponding path program 1 times [2023-12-24 15:15:24,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:15:24,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552727690] [2023-12-24 15:15:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:15:24,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:24,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:15:24,476 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:15:24,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 15:15:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:15:24,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 15:15:24,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:24,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:15:27,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-24 15:15:28,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:15:28,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 15:15:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:15:28,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:15:28,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:15:28,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552727690] [2023-12-24 15:15:28,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552727690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:15:28,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:15:28,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:15:28,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044206281] [2023-12-24 15:15:28,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:15:28,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 15:15:28,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:15:28,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 15:15:28,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:15:28,386 INFO L87 Difference]: Start difference. First operand 462 states and 617 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:15:35,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:15:42,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:15:46,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:15:50,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:15:54,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:15:58,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:16:01,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:16:01,248 INFO L93 Difference]: Finished difference Result 1106 states and 1523 transitions. [2023-12-24 15:16:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 15:16:01,249 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 131 [2023-12-24 15:16:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:16:01,251 INFO L225 Difference]: With dead ends: 1106 [2023-12-24 15:16:01,251 INFO L226 Difference]: Without dead ends: 741 [2023-12-24 15:16:01,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-24 15:16:01,252 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 298 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 41 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:16:01,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 537 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 403 Invalid, 6 Unknown, 0 Unchecked, 30.2s Time] [2023-12-24 15:16:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-12-24 15:16:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 481. [2023-12-24 15:16:01,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 380 states have (on average 1.2736842105263158) internal successors, (484), 384 states have internal predecessors, (484), 80 states have call successors, (80), 20 states have call predecessors, (80), 20 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 15:16:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 644 transitions. [2023-12-24 15:16:01,314 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 644 transitions. Word has length 131 [2023-12-24 15:16:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:16:01,314 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 644 transitions. [2023-12-24 15:16:01,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:16:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 644 transitions. [2023-12-24 15:16:01,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 15:16:01,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:16:01,315 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:16:01,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 15:16:01,522 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 15:16:01,522 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:16:01,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:16:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash 377629819, now seen corresponding path program 1 times [2023-12-24 15:16:01,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:16:01,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93214844] [2023-12-24 15:16:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:16:01,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:16:01,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:16:01,525 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 15:16:01,559 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 15:16:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:16:01,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 15:16:01,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:16:01,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:16:04,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2023-12-24 15:16:05,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:16:05,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2023-12-24 15:16:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:16:05,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:16:05,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:16:05,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93214844] [2023-12-24 15:16:05,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93214844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:16:05,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:16:05,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:16:05,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115550460] [2023-12-24 15:16:05,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:16:05,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 15:16:05,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:16:05,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 15:16:05,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:16:05,326 INFO L87 Difference]: Start difference. First operand 481 states and 644 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:16:13,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:16:18,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:16:22,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:16:26,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:16:31,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:16:35,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 15:16:38,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:16:38,424 INFO L93 Difference]: Finished difference Result 1121 states and 1540 transitions. [2023-12-24 15:16:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 15:16:38,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 132 [2023-12-24 15:16:38,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:16:38,427 INFO L225 Difference]: With dead ends: 1121 [2023-12-24 15:16:38,427 INFO L226 Difference]: Without dead ends: 735 [2023-12-24 15:16:38,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-24 15:16:38,428 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 321 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 41 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:16:38,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 523 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 404 Invalid, 6 Unknown, 0 Unchecked, 30.8s Time] [2023-12-24 15:16:38,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-12-24 15:16:38,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 500. [2023-12-24 15:16:38,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 399 states have (on average 1.280701754385965) internal successors, (511), 403 states have internal predecessors, (511), 80 states have call successors, (80), 20 states have call predecessors, (80), 20 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 15:16:38,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 671 transitions. [2023-12-24 15:16:38,477 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 671 transitions. Word has length 132 [2023-12-24 15:16:38,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:16:38,477 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 671 transitions. [2023-12-24 15:16:38,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:16:38,478 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 671 transitions. [2023-12-24 15:16:38,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 15:16:38,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:16:38,478 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:16:38,486 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 15:16:38,684 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 15:16:38,684 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:16:38,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:16:38,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1427972826, now seen corresponding path program 1 times [2023-12-24 15:16:38,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:16:38,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223076376] [2023-12-24 15:16:38,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:16:38,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:16:38,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:16:38,688 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:16:38,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 15:16:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:16:39,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-24 15:16:39,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:16:39,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:16:40,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 15:16:41,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 39 [2023-12-24 15:16:45,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 78 [2023-12-24 15:16:46,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:16:46,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 82 [2023-12-24 15:16:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 124 proven. 348 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 15:16:46,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:17:07,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:17:07,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223076376] [2023-12-24 15:17:07,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223076376] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:17:07,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1517827811] [2023-12-24 15:17:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:17:07,032 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:17:07,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:17:07,034 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 15:17:07,035 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 15:17:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:17:07,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-24 15:17:07,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:17:08,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:17:09,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 15:17:11,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 47 [2023-12-24 15:17:17,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 68 [2023-12-24 15:17:18,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 77 [2023-12-24 15:17:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 124 proven. 348 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 15:17:18,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:17:32,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1517827811] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:17:32,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:17:32,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 62 [2023-12-24 15:17:32,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879458159] [2023-12-24 15:17:32,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:17:32,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-24 15:17:32,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:17:32,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-24 15:17:32,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1235, Invalid=4768, Unknown=3, NotChecked=0, Total=6006 [2023-12-24 15:17:32,786 INFO L87 Difference]: Start difference. First operand 500 states and 671 transitions. Second operand has 63 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 47 states have internal predecessors, (127), 16 states have call successors, (36), 14 states have call predecessors, (36), 16 states have return successors, (36), 14 states have call predecessors, (36), 16 states have call successors, (36) [2023-12-24 15:17:41,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:17:41,108 INFO L93 Difference]: Finished difference Result 1236 states and 1629 transitions. [2023-12-24 15:17:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-24 15:17:41,113 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 47 states have internal predecessors, (127), 16 states have call successors, (36), 14 states have call predecessors, (36), 16 states have return successors, (36), 14 states have call predecessors, (36), 16 states have call successors, (36) Word has length 133 [2023-12-24 15:17:41,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:17:41,115 INFO L225 Difference]: With dead ends: 1236 [2023-12-24 15:17:41,115 INFO L226 Difference]: Without dead ends: 840 [2023-12-24 15:17:41,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4013 ImplicationChecksByTransitivity, 43.4s TimeCoverageRelationStatistics Valid=2411, Invalid=8928, Unknown=3, NotChecked=0, Total=11342 [2023-12-24 15:17:41,119 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 647 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:17:41,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 2390 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-24 15:17:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-12-24 15:17:41,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 619. [2023-12-24 15:17:41,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 503 states have (on average 1.2644135188866799) internal successors, (636), 506 states have internal predecessors, (636), 76 states have call successors, (76), 39 states have call predecessors, (76), 39 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-24 15:17:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 788 transitions. [2023-12-24 15:17:41,227 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 788 transitions. Word has length 133 [2023-12-24 15:17:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:17:41,227 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 788 transitions. [2023-12-24 15:17:41,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 47 states have internal predecessors, (127), 16 states have call successors, (36), 14 states have call predecessors, (36), 16 states have return successors, (36), 14 states have call predecessors, (36), 16 states have call successors, (36) [2023-12-24 15:17:41,227 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 788 transitions. [2023-12-24 15:17:41,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 15:17:41,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:17:41,228 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:17:41,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 15:17:41,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-24 15:17:41,639 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 15:17:41,640 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:17:41,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:17:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash 618626200, now seen corresponding path program 1 times [2023-12-24 15:17:41,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:17:41,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796526982] [2023-12-24 15:17:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:17:41,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:41,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:17:41,642 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:17:41,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 15:17:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:17:41,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 15:17:41,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:17:41,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 15:17:42,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:17:43,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 15:17:43,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 15:17:43,561 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 15:17:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 71 proven. 291 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-24 15:17:43,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:17:43,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:17:43,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796526982] [2023-12-24 15:17:43,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796526982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:17:43,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1986802835] [2023-12-24 15:17:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:17:43,711 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:17:43,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:17:43,712 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:17:43,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-24 15:17:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:17:44,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 15:17:44,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:17:44,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 15:17:45,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:17:45,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 15:17:46,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 15:17:46,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 15:17:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 71 proven. 291 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-24 15:17:46,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:17:46,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1986802835] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:17:46,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:17:46,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-24 15:17:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981999211] [2023-12-24 15:17:46,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:17:46,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 15:17:46,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:17:46,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 15:17:46,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-12-24 15:17:46,240 INFO L87 Difference]: Start difference. First operand 619 states and 788 transitions. Second operand has 19 states, 17 states have (on average 6.0) internal successors, (102), 18 states have internal predecessors, (102), 8 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2023-12-24 15:17:47,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:17:47,855 INFO L93 Difference]: Finished difference Result 1141 states and 1467 transitions. [2023-12-24 15:17:47,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 15:17:47,855 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.0) internal successors, (102), 18 states have internal predecessors, (102), 8 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) Word has length 133 [2023-12-24 15:17:47,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:17:47,857 INFO L225 Difference]: With dead ends: 1141 [2023-12-24 15:17:47,857 INFO L226 Difference]: Without dead ends: 645 [2023-12-24 15:17:47,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 293 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2023-12-24 15:17:47,859 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 212 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:17:47,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 862 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 15:17:47,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-24 15:17:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 623. [2023-12-24 15:17:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 506 states have (on average 1.2588932806324111) internal successors, (637), 509 states have internal predecessors, (637), 76 states have call successors, (76), 40 states have call predecessors, (76), 40 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-24 15:17:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 789 transitions. [2023-12-24 15:17:47,948 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 789 transitions. Word has length 133 [2023-12-24 15:17:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:17:47,948 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 789 transitions. [2023-12-24 15:17:47,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.0) internal successors, (102), 18 states have internal predecessors, (102), 8 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2023-12-24 15:17:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 789 transitions. [2023-12-24 15:17:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 15:17:47,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:17:47,949 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:17:47,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2023-12-24 15:17:48,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 15:17:48,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:48,363 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:17:48,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:17:48,363 INFO L85 PathProgramCache]: Analyzing trace with hash -566171880, now seen corresponding path program 1 times [2023-12-24 15:17:48,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:17:48,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844951756] [2023-12-24 15:17:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:17:48,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:48,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:17:48,364 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:17:48,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 15:17:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:17:48,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 15:17:48,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:17:48,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 15:17:49,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:17:49,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-24 15:17:49,312 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 15:17:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 71 proven. 291 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-24 15:17:49,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:17:49,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:17:49,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844951756] [2023-12-24 15:17:49,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844951756] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:17:49,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1539090999] [2023-12-24 15:17:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:17:49,499 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:17:49,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:17:49,500 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:17:49,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-24 15:17:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:17:49,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 15:17:49,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:17:50,032 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 21 treesize of output 9 [2023-12-24 15:17:50,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:17:50,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 15:17:51,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 15:17:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 71 proven. 291 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-24 15:17:51,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:17:51,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1539090999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:17:51,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:17:51,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 15:17:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914285360] [2023-12-24 15:17:51,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:17:51,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 15:17:51,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:17:51,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 15:17:51,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-12-24 15:17:51,244 INFO L87 Difference]: Start difference. First operand 623 states and 789 transitions. Second operand has 17 states, 15 states have (on average 6.133333333333334) internal successors, (92), 16 states have internal predecessors, (92), 8 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2023-12-24 15:17:52,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:17:52,625 INFO L93 Difference]: Finished difference Result 1126 states and 1447 transitions. [2023-12-24 15:17:52,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 15:17:52,626 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.133333333333334) internal successors, (92), 16 states have internal predecessors, (92), 8 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) Word has length 133 [2023-12-24 15:17:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:17:52,628 INFO L225 Difference]: With dead ends: 1126 [2023-12-24 15:17:52,628 INFO L226 Difference]: Without dead ends: 620 [2023-12-24 15:17:52,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2023-12-24 15:17:52,630 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 134 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:17:52,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 725 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 15:17:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-12-24 15:17:52,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 609. [2023-12-24 15:17:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 492 states have (on average 1.2621951219512195) internal successors, (621), 495 states have internal predecessors, (621), 76 states have call successors, (76), 40 states have call predecessors, (76), 40 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-24 15:17:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 773 transitions. [2023-12-24 15:17:52,713 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 773 transitions. Word has length 133 [2023-12-24 15:17:52,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:17:52,713 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 773 transitions. [2023-12-24 15:17:52,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.133333333333334) internal successors, (92), 16 states have internal predecessors, (92), 8 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2023-12-24 15:17:52,714 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 773 transitions. [2023-12-24 15:17:52,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 15:17:52,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:17:52,714 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:17:52,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-12-24 15:17:52,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 15:17:53,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:53,120 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:17:53,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:17:53,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1662788159, now seen corresponding path program 1 times [2023-12-24 15:17:53,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:17:53,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869928286] [2023-12-24 15:17:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:17:53,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:53,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:17:53,122 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:17:53,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 15:17:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:17:53,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 15:17:53,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:17:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 14 proven. 222 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-12-24 15:17:53,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:17:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:17:53,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:17:53,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869928286] [2023-12-24 15:17:53,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869928286] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:17:53,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:17:53,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 15:17:53,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551835678] [2023-12-24 15:17:53,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:17:53,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:17:53,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:17:53,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:17:53,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:17:53,852 INFO L87 Difference]: Start difference. First operand 609 states and 773 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:17:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:17:53,999 INFO L93 Difference]: Finished difference Result 1415 states and 1853 transitions. [2023-12-24 15:17:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:17:53,999 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 135 [2023-12-24 15:17:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:17:54,001 INFO L225 Difference]: With dead ends: 1415 [2023-12-24 15:17:54,001 INFO L226 Difference]: Without dead ends: 925 [2023-12-24 15:17:54,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:17:54,003 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 73 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:17:54,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 319 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:17:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2023-12-24 15:17:54,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 846. [2023-12-24 15:17:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 729 states have (on average 1.3127572016460904) internal successors, (957), 732 states have internal predecessors, (957), 76 states have call successors, (76), 40 states have call predecessors, (76), 40 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-24 15:17:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1109 transitions. [2023-12-24 15:17:54,080 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1109 transitions. Word has length 135 [2023-12-24 15:17:54,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:17:54,080 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1109 transitions. [2023-12-24 15:17:54,080 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:17:54,080 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1109 transitions. [2023-12-24 15:17:54,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 15:17:54,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:17:54,081 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:17:54,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 15:17:54,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:54,286 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:17:54,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:17:54,286 INFO L85 PathProgramCache]: Analyzing trace with hash -857171775, now seen corresponding path program 1 times [2023-12-24 15:17:54,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:17:54,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222398087] [2023-12-24 15:17:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:17:54,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:54,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:17:54,288 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:17:54,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 15:17:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:17:54,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 15:17:54,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:17:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:17:54,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:17:54,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:17:54,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222398087] [2023-12-24 15:17:54,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222398087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:17:54,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:17:54,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:17:54,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137645240] [2023-12-24 15:17:54,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:17:54,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:17:54,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:17:54,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:17:54,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:17:54,504 INFO L87 Difference]: Start difference. First operand 846 states and 1109 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:17:54,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:17:54,624 INFO L93 Difference]: Finished difference Result 873 states and 1140 transitions. [2023-12-24 15:17:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:17:54,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 135 [2023-12-24 15:17:54,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:17:54,629 INFO L225 Difference]: With dead ends: 873 [2023-12-24 15:17:54,629 INFO L226 Difference]: Without dead ends: 871 [2023-12-24 15:17:54,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:17:54,645 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 15 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 496 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 15:17:54,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 496 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:17:54,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-12-24 15:17:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 866. [2023-12-24 15:17:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 749 states have (on average 1.3044058744993325) internal successors, (977), 752 states have internal predecessors, (977), 76 states have call successors, (76), 40 states have call predecessors, (76), 40 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-24 15:17:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1129 transitions. [2023-12-24 15:17:54,745 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1129 transitions. Word has length 135 [2023-12-24 15:17:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:17:54,746 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1129 transitions. [2023-12-24 15:17:54,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:17:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1129 transitions. [2023-12-24 15:17:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 15:17:54,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:17:54,747 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:17:54,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 15:17:54,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:54,951 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:17:54,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:17:54,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1121382728, now seen corresponding path program 1 times [2023-12-24 15:17:54,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:17:54,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288475162] [2023-12-24 15:17:54,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:17:54,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:54,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:17:54,952 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:17:54,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 15:17:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:17:55,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 15:17:55,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:17:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:17:55,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:17:55,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:17:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288475162] [2023-12-24 15:17:55,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288475162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:17:55,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:17:55,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:17:55,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780239883] [2023-12-24 15:17:55,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:17:55,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:17:55,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:17:55,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:17:55,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:17:55,210 INFO L87 Difference]: Start difference. First operand 866 states and 1129 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:17:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:17:55,340 INFO L93 Difference]: Finished difference Result 1819 states and 2414 transitions. [2023-12-24 15:17:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:17:55,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 137 [2023-12-24 15:17:55,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:17:55,343 INFO L225 Difference]: With dead ends: 1819 [2023-12-24 15:17:55,343 INFO L226 Difference]: Without dead ends: 1102 [2023-12-24 15:17:55,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 133 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 15:17:55,344 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 30 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:17:55,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 427 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:17:55,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2023-12-24 15:17:55,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1053. [2023-12-24 15:17:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 936 states have (on average 1.3194444444444444) internal successors, (1235), 939 states have internal predecessors, (1235), 76 states have call successors, (76), 40 states have call predecessors, (76), 40 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-24 15:17:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1387 transitions. [2023-12-24 15:17:55,430 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1387 transitions. Word has length 137 [2023-12-24 15:17:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:17:55,430 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1387 transitions. [2023-12-24 15:17:55,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:17:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1387 transitions. [2023-12-24 15:17:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 15:17:55,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:17:55,431 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:17:55,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 15:17:55,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:55,636 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:17:55,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:17:55,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1093773712, now seen corresponding path program 1 times [2023-12-24 15:17:55,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:17:55,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388150072] [2023-12-24 15:17:55,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:17:55,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:55,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:17:55,638 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:17:55,640 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 (26)] Waiting until timeout for monitored process [2023-12-24 15:17:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:17:55,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 15:17:55,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:17:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:17:55,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:17:55,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:17:55,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388150072] [2023-12-24 15:17:55,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388150072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:17:55,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:17:55,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:17:55,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663090247] [2023-12-24 15:17:55,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:17:55,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:17:55,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:17:55,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:17:55,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:17:55,863 INFO L87 Difference]: Start difference. First operand 1053 states and 1387 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:17:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:17:56,043 INFO L93 Difference]: Finished difference Result 1085 states and 1423 transitions. [2023-12-24 15:17:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 15:17:56,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2023-12-24 15:17:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:17:56,056 INFO L225 Difference]: With dead ends: 1085 [2023-12-24 15:17:56,056 INFO L226 Difference]: Without dead ends: 1083 [2023-12-24 15:17:56,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:17:56,057 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 19 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:17:56,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 592 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:17:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2023-12-24 15:17:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1058. [2023-12-24 15:17:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 941 states have (on average 1.3177470775770457) internal successors, (1240), 944 states have internal predecessors, (1240), 76 states have call successors, (76), 40 states have call predecessors, (76), 40 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-24 15:17:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1392 transitions. [2023-12-24 15:17:56,204 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1392 transitions. Word has length 138 [2023-12-24 15:17:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:17:56,204 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1392 transitions. [2023-12-24 15:17:56,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:17:56,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1392 transitions. [2023-12-24 15:17:56,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-24 15:17:56,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:17:56,206 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:17:56,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 15:17:56,412 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 15:17:56,412 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:17:56,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:17:56,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1980689875, now seen corresponding path program 1 times [2023-12-24 15:17:56,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:17:56,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258138343] [2023-12-24 15:17:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:17:56,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:17:56,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:17:56,414 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 15:17:56,415 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 15:17:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:17:57,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 15:17:57,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:18:03,403 INFO L349 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2023-12-24 15:18:03,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-24 15:18:03,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:18:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 100 proven. 1099 refuted. 0 times theorem prover too weak. 1373 trivial. 0 not checked. [2023-12-24 15:18:04,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:18:04,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-12-24 15:18:05,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:18:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258138343] [2023-12-24 15:18:05,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258138343] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:18:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [596703417] [2023-12-24 15:18:05,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:18:05,280 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:18:05,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:18:05,281 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:18:05,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-24 15:18:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:18:06,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-24 15:18:06,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:18:11,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:18:12,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:18:14,205 INFO L349 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2023-12-24 15:18:14,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-24 15:18:14,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:18:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 100 proven. 1099 refuted. 0 times theorem prover too weak. 1373 trivial. 0 not checked. [2023-12-24 15:18:18,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:18:18,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-12-24 15:18:19,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [596703417] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:18:19,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:18:19,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 50 [2023-12-24 15:18:19,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503347244] [2023-12-24 15:18:19,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:18:19,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-24 15:18:19,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:18:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-24 15:18:19,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2713, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 15:18:19,966 INFO L87 Difference]: Start difference. First operand 1058 states and 1392 transitions. Second operand has 51 states, 43 states have (on average 4.162790697674419) internal successors, (179), 42 states have internal predecessors, (179), 14 states have call successors, (56), 10 states have call predecessors, (56), 14 states have return successors, (56), 10 states have call predecessors, (56), 14 states have call successors, (56) [2023-12-24 15:18:38,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:18:38,425 INFO L93 Difference]: Finished difference Result 2004 states and 2603 transitions. [2023-12-24 15:18:38,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-24 15:18:38,426 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 43 states have (on average 4.162790697674419) internal successors, (179), 42 states have internal predecessors, (179), 14 states have call successors, (56), 10 states have call predecessors, (56), 14 states have return successors, (56), 10 states have call predecessors, (56), 14 states have call successors, (56) Word has length 260 [2023-12-24 15:18:38,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:18:38,430 INFO L225 Difference]: With dead ends: 2004 [2023-12-24 15:18:38,430 INFO L226 Difference]: Without dead ends: 1528 [2023-12-24 15:18:38,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 489 SyntacticMatches, 11 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3811 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=1861, Invalid=8851, Unknown=0, NotChecked=0, Total=10712 [2023-12-24 15:18:38,433 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1129 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:18:38,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 1800 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-24 15:18:38,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2023-12-24 15:18:38,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 835. [2023-12-24 15:18:38,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 745 states have (on average 1.3033557046979867) internal successors, (971), 745 states have internal predecessors, (971), 54 states have call successors, (54), 35 states have call predecessors, (54), 35 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 15:18:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1079 transitions. [2023-12-24 15:18:38,526 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1079 transitions. Word has length 260 [2023-12-24 15:18:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:18:38,527 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1079 transitions. [2023-12-24 15:18:38,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 43 states have (on average 4.162790697674419) internal successors, (179), 42 states have internal predecessors, (179), 14 states have call successors, (56), 10 states have call predecessors, (56), 14 states have return successors, (56), 10 states have call predecessors, (56), 14 states have call successors, (56) [2023-12-24 15:18:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1079 transitions. [2023-12-24 15:18:38,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-24 15:18:38,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:18:38,528 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:18:38,549 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 15:18:38,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2023-12-24 15:18:38,947 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=3,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:18:38,948 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:18:38,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:18:38,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1504930795, now seen corresponding path program 1 times [2023-12-24 15:18:38,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:18:38,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468923116] [2023-12-24 15:18:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:18:38,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:18:38,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:18:38,950 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:18:38,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 15:18:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:18:39,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 15:18:39,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:18:39,284 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 15:18:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2023-12-24 15:18:39,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:18:39,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:18:39,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468923116] [2023-12-24 15:18:39,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468923116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:18:39,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:18:39,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:18:39,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013196434] [2023-12-24 15:18:39,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:18:39,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:18:39,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:18:39,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:18:39,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:18:39,310 INFO L87 Difference]: Start difference. First operand 835 states and 1079 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:18:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:18:39,619 INFO L93 Difference]: Finished difference Result 1347 states and 1804 transitions. [2023-12-24 15:18:39,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:18:39,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 260 [2023-12-24 15:18:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:18:39,622 INFO L225 Difference]: With dead ends: 1347 [2023-12-24 15:18:39,622 INFO L226 Difference]: Without dead ends: 1062 [2023-12-24 15:18:39,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:18:39,623 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 67 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:18:39,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 574 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:18:39,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-12-24 15:18:39,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 862. [2023-12-24 15:18:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 772 states have (on average 1.3005181347150259) internal successors, (1004), 772 states have internal predecessors, (1004), 54 states have call successors, (54), 35 states have call predecessors, (54), 35 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 15:18:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1112 transitions. [2023-12-24 15:18:39,698 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1112 transitions. Word has length 260 [2023-12-24 15:18:39,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:18:39,699 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1112 transitions. [2023-12-24 15:18:39,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:18:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1112 transitions. [2023-12-24 15:18:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-24 15:18:39,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:18:39,700 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:18:39,707 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 15:18:39,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:18:39,906 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:18:39,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:18:39,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2109978131, now seen corresponding path program 1 times [2023-12-24 15:18:39,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:18:39,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13011769] [2023-12-24 15:18:39,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:18:39,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:18:39,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:18:39,908 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:18:39,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 15:18:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:18:40,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:18:40,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:18:40,179 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 15:18:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2023-12-24 15:18:40,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:18:40,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:18:40,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13011769] [2023-12-24 15:18:40,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13011769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:18:40,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:18:40,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:18:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480091968] [2023-12-24 15:18:40,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:18:40,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:18:40,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:18:40,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:18:40,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:18:40,207 INFO L87 Difference]: Start difference. First operand 862 states and 1112 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:18:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:18:40,563 INFO L93 Difference]: Finished difference Result 1366 states and 1797 transitions. [2023-12-24 15:18:40,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:18:40,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 260 [2023-12-24 15:18:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:18:40,567 INFO L225 Difference]: With dead ends: 1366 [2023-12-24 15:18:40,567 INFO L226 Difference]: Without dead ends: 1030 [2023-12-24 15:18:40,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:18:40,569 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 112 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:18:40,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 536 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:18:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2023-12-24 15:18:40,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 870. [2023-12-24 15:18:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 780 states have (on average 1.255128205128205) internal successors, (979), 780 states have internal predecessors, (979), 54 states have call successors, (54), 35 states have call predecessors, (54), 35 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 15:18:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1087 transitions. [2023-12-24 15:18:40,656 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1087 transitions. Word has length 260 [2023-12-24 15:18:40,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:18:40,656 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1087 transitions. [2023-12-24 15:18:40,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:18:40,657 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1087 transitions. [2023-12-24 15:18:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-24 15:18:40,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:18:40,658 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:18:40,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 15:18:40,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:18:40,865 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:18:40,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:18:40,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1279625297, now seen corresponding path program 1 times [2023-12-24 15:18:40,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:18:40,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718644688] [2023-12-24 15:18:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:18:40,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:18:40,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:18:40,866 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:18:40,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 15:18:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:18:41,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 15:18:41,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:18:41,238 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 31 treesize of output 19 [2023-12-24 15:18:41,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2023-12-24 15:18:41,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:18:41,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:18:41,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718644688] [2023-12-24 15:18:41,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718644688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:18:41,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:18:41,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:18:41,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687658233] [2023-12-24 15:18:41,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:18:41,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:18:41,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:18:41,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:18:41,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:18:41,271 INFO L87 Difference]: Start difference. First operand 870 states and 1087 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:18:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:18:41,666 INFO L93 Difference]: Finished difference Result 1262 states and 1613 transitions. [2023-12-24 15:18:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:18:41,667 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 260 [2023-12-24 15:18:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:18:41,669 INFO L225 Difference]: With dead ends: 1262 [2023-12-24 15:18:41,669 INFO L226 Difference]: Without dead ends: 959 [2023-12-24 15:18:41,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:18:41,671 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 56 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:18:41,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 516 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:18:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-12-24 15:18:41,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 879. [2023-12-24 15:18:41,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 789 states have (on average 1.2522179974651457) internal successors, (988), 789 states have internal predecessors, (988), 54 states have call successors, (54), 35 states have call predecessors, (54), 35 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 15:18:41,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1096 transitions. [2023-12-24 15:18:41,754 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1096 transitions. Word has length 260 [2023-12-24 15:18:41,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:18:41,754 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1096 transitions. [2023-12-24 15:18:41,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:18:41,754 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1096 transitions. [2023-12-24 15:18:41,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-24 15:18:41,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:18:41,756 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:18:41,776 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 (31)] Ended with exit code 0 [2023-12-24 15:18:41,962 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 15:18:41,962 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:18:41,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:18:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2088971923, now seen corresponding path program 1 times [2023-12-24 15:18:41,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:18:41,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970331538] [2023-12-24 15:18:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:18:41,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:18:41,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:18:41,964 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 15:18:41,966 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 15:18:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:18:42,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 15:18:42,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:18:43,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-12-24 15:18:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 2563 trivial. 0 not checked. [2023-12-24 15:18:43,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:18:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2563 trivial. 0 not checked. [2023-12-24 15:18:44,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:18:44,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970331538] [2023-12-24 15:18:44,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970331538] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 15:18:44,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:18:44,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2023-12-24 15:18:44,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817216592] [2023-12-24 15:18:44,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:18:44,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 15:18:44,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:18:44,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 15:18:44,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-24 15:18:44,352 INFO L87 Difference]: Start difference. First operand 879 states and 1096 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-24 15:18:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:18:44,892 INFO L93 Difference]: Finished difference Result 1979 states and 2531 transitions. [2023-12-24 15:18:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 15:18:44,893 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 260 [2023-12-24 15:18:44,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:18:44,895 INFO L225 Difference]: With dead ends: 1979 [2023-12-24 15:18:44,895 INFO L226 Difference]: Without dead ends: 1281 [2023-12-24 15:18:44,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-24 15:18:44,897 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 201 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:18:44,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 513 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 15:18:44,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2023-12-24 15:18:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 936. [2023-12-24 15:18:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 846 states have (on average 1.2458628841607564) internal successors, (1054), 846 states have internal predecessors, (1054), 54 states have call successors, (54), 35 states have call predecessors, (54), 35 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 15:18:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1162 transitions. [2023-12-24 15:18:44,983 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1162 transitions. Word has length 260 [2023-12-24 15:18:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:18:44,983 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1162 transitions. [2023-12-24 15:18:44,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-24 15:18:44,984 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1162 transitions. [2023-12-24 15:18:44,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-24 15:18:44,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:18:44,985 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:18:44,992 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 15:18:45,192 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 15:18:45,192 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:18:45,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:18:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1042466067, now seen corresponding path program 1 times [2023-12-24 15:18:45,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:18:45,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712810012] [2023-12-24 15:18:45,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:18:45,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:18:45,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:18:45,194 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:18:45,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 15:18:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:18:46,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 15:18:46,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:18:51,912 INFO L349 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2023-12-24 15:18:51,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-24 15:18:52,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:18:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 100 proven. 1099 refuted. 0 times theorem prover too weak. 1373 trivial. 0 not checked. [2023-12-24 15:18:53,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:18:54,314 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 41 [2023-12-24 15:18:55,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:18:55,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712810012] [2023-12-24 15:18:55,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712810012] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:18:55,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1591827096] [2023-12-24 15:18:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:18:55,002 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:18:55,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:18:55,004 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:18:55,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2023-12-24 15:18:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:18:56,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-24 15:18:56,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:19:00,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:19:02,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:19:05,313 INFO L349 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2023-12-24 15:19:05,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 31 [2023-12-24 15:19:05,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:19:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 126 proven. 1099 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2023-12-24 15:19:06,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:19:06,671 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 41 [2023-12-24 15:19:07,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1591827096] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:19:07,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:19:07,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 51 [2023-12-24 15:19:07,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463837113] [2023-12-24 15:19:07,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:19:07,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-24 15:19:07,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:19:07,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-24 15:19:07,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2814, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 15:19:07,533 INFO L87 Difference]: Start difference. First operand 936 states and 1162 transitions. Second operand has 52 states, 44 states have (on average 4.068181818181818) internal successors, (179), 42 states have internal predecessors, (179), 14 states have call successors, (56), 11 states have call predecessors, (56), 14 states have return successors, (56), 10 states have call predecessors, (56), 14 states have call successors, (56) [2023-12-24 15:19:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:19:19,286 INFO L93 Difference]: Finished difference Result 1781 states and 2218 transitions. [2023-12-24 15:19:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-24 15:19:19,287 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 44 states have (on average 4.068181818181818) internal successors, (179), 42 states have internal predecessors, (179), 14 states have call successors, (56), 11 states have call predecessors, (56), 14 states have return successors, (56), 10 states have call predecessors, (56), 14 states have call successors, (56) Word has length 260 [2023-12-24 15:19:19,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:19:19,290 INFO L225 Difference]: With dead ends: 1781 [2023-12-24 15:19:19,290 INFO L226 Difference]: Without dead ends: 1430 [2023-12-24 15:19:19,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 488 SyntacticMatches, 11 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3984 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1925, Invalid=9205, Unknown=0, NotChecked=0, Total=11130 [2023-12-24 15:19:19,293 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 1167 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 2806 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 2806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:19:19,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 1587 Invalid, 3110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 2806 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-24 15:19:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2023-12-24 15:19:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 936. [2023-12-24 15:19:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 846 states have (on average 1.2458628841607564) internal successors, (1054), 846 states have internal predecessors, (1054), 54 states have call successors, (54), 35 states have call predecessors, (54), 35 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 15:19:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1162 transitions. [2023-12-24 15:19:19,389 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1162 transitions. Word has length 260 [2023-12-24 15:19:19,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:19:19,390 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1162 transitions. [2023-12-24 15:19:19,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 44 states have (on average 4.068181818181818) internal successors, (179), 42 states have internal predecessors, (179), 14 states have call successors, (56), 11 states have call predecessors, (56), 14 states have return successors, (56), 10 states have call predecessors, (56), 14 states have call successors, (56) [2023-12-24 15:19:19,390 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1162 transitions. [2023-12-24 15:19:19,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-24 15:19:19,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:19:19,410 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:19:19,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2023-12-24 15:19:19,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-24 15:19:19,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:19:19,812 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:19:19,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:19:19,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1851812693, now seen corresponding path program 1 times [2023-12-24 15:19:19,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:19:19,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490533279] [2023-12-24 15:19:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:19:19,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:19:19,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:19:19,814 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:19:19,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 15:19:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:19:20,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:19:20,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:19:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2023-12-24 15:19:20,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:19:20,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:19:20,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490533279] [2023-12-24 15:19:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490533279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:19:20,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:19:20,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:19:20,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344239233] [2023-12-24 15:19:20,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:19:20,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:19:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:19:20,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:19:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:19:20,127 INFO L87 Difference]: Start difference. First operand 936 states and 1162 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:19:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:19:20,284 INFO L93 Difference]: Finished difference Result 1811 states and 2289 transitions. [2023-12-24 15:19:20,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:19:20,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 260 [2023-12-24 15:19:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:19:20,288 INFO L225 Difference]: With dead ends: 1811 [2023-12-24 15:19:20,288 INFO L226 Difference]: Without dead ends: 1056 [2023-12-24 15:19:20,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:19:20,289 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 53 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:19:20,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 316 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:19:20,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-12-24 15:19:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 904. [2023-12-24 15:19:20,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 814 states have (on average 1.2174447174447174) internal successors, (991), 814 states have internal predecessors, (991), 54 states have call successors, (54), 35 states have call predecessors, (54), 35 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 15:19:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1099 transitions. [2023-12-24 15:19:20,379 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1099 transitions. Word has length 260 [2023-12-24 15:19:20,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:19:20,380 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1099 transitions. [2023-12-24 15:19:20,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:19:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1099 transitions. [2023-12-24 15:19:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-24 15:19:20,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:19:20,381 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:19:20,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 15:19:20,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:19:20,589 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:19:20,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:19:20,589 INFO L85 PathProgramCache]: Analyzing trace with hash -341401489, now seen corresponding path program 1 times [2023-12-24 15:19:20,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:19:20,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916940613] [2023-12-24 15:19:20,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:19:20,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:19:20,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:19:20,591 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:19:20,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 15:19:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:19:20,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:19:20,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:19:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2023-12-24 15:19:20,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:19:20,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:19:20,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916940613] [2023-12-24 15:19:20,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916940613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:19:20,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:19:20,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:19:20,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662267838] [2023-12-24 15:19:20,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:19:20,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:19:20,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:19:20,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:19:20,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:19:20,932 INFO L87 Difference]: Start difference. First operand 904 states and 1099 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:19:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:19:21,150 INFO L93 Difference]: Finished difference Result 1734 states and 2140 transitions. [2023-12-24 15:19:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:19:21,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 260 [2023-12-24 15:19:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:19:21,154 INFO L225 Difference]: With dead ends: 1734 [2023-12-24 15:19:21,154 INFO L226 Difference]: Without dead ends: 1011 [2023-12-24 15:19:21,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:19:21,155 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 51 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:19:21,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 359 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:19:21,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2023-12-24 15:19:21,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 871. [2023-12-24 15:19:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 781 states have (on average 1.1882202304737517) internal successors, (928), 781 states have internal predecessors, (928), 54 states have call successors, (54), 35 states have call predecessors, (54), 35 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 15:19:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1036 transitions. [2023-12-24 15:19:21,244 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1036 transitions. Word has length 260 [2023-12-24 15:19:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:19:21,245 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1036 transitions. [2023-12-24 15:19:21,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 15:19:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1036 transitions. [2023-12-24 15:19:21,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-24 15:19:21,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:19:21,246 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:19:21,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-24 15:19:21,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:19:21,453 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:19:21,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:19:21,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2103134730, now seen corresponding path program 1 times [2023-12-24 15:19:21,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:19:21,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336005512] [2023-12-24 15:19:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:19:21,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:19:21,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:19:21,455 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:19:21,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-24 15:19:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:19:22,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 15:19:22,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:19:25,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:19:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 100 proven. 653 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2023-12-24 15:19:27,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:19:27,402 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 35 [2023-12-24 15:19:27,518 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 38 [2023-12-24 15:19:27,606 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 31 [2023-12-24 15:19:27,697 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 31 [2023-12-24 15:19:27,786 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 31 [2023-12-24 15:19:27,872 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 31 [2023-12-24 15:19:27,961 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 31 [2023-12-24 15:19:28,055 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 31 [2023-12-24 15:19:28,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:19:28,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336005512] [2023-12-24 15:19:28,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336005512] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:19:28,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [989080033] [2023-12-24 15:19:28,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:19:28,147 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:19:28,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:19:28,148 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:19:28,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2023-12-24 15:19:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:19:29,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 15:19:29,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:19:31,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:19:32,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:19:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 100 proven. 653 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2023-12-24 15:19:36,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:19:36,152 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 35 [2023-12-24 15:19:36,227 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 38 [2023-12-24 15:19:36,334 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 31 [2023-12-24 15:19:36,416 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 31 [2023-12-24 15:19:36,500 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 35 treesize of output 31 [2023-12-24 15:19:36,604 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 35 treesize of output 31 [2023-12-24 15:19:36,690 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 31 [2023-12-24 15:19:36,774 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 31 [2023-12-24 15:19:36,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [989080033] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:19:36,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:19:36,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 30 [2023-12-24 15:19:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354159114] [2023-12-24 15:19:36,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:19:36,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-24 15:19:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:19:36,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-24 15:19:36,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 15:19:36,871 INFO L87 Difference]: Start difference. First operand 871 states and 1036 transitions. Second operand has 31 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 26 states have internal predecessors, (155), 8 states have call successors, (48), 6 states have call predecessors, (48), 8 states have return successors, (48), 6 states have call predecessors, (48), 8 states have call successors, (48) [2023-12-24 15:19:59,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:19:59,910 INFO L93 Difference]: Finished difference Result 1488 states and 1795 transitions. [2023-12-24 15:19:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 15:19:59,910 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 26 states have internal predecessors, (155), 8 states have call successors, (48), 6 states have call predecessors, (48), 8 states have return successors, (48), 6 states have call predecessors, (48), 8 states have call successors, (48) Word has length 261 [2023-12-24 15:19:59,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:19:59,913 INFO L225 Difference]: With dead ends: 1488 [2023-12-24 15:19:59,913 INFO L226 Difference]: Without dead ends: 1161 [2023-12-24 15:19:59,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 510 SyntacticMatches, 15 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=718, Invalid=3064, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 15:19:59,914 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 441 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:19:59,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1451 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-24 15:19:59,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-12-24 15:19:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 887. [2023-12-24 15:19:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 796 states have (on average 1.1821608040201006) internal successors, (941), 796 states have internal predecessors, (941), 54 states have call successors, (54), 36 states have call predecessors, (54), 36 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 15:19:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1049 transitions. [2023-12-24 15:19:59,997 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1049 transitions. Word has length 261 [2023-12-24 15:19:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:19:59,998 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1049 transitions. [2023-12-24 15:19:59,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 26 states have internal predecessors, (155), 8 states have call successors, (48), 6 states have call predecessors, (48), 8 states have return successors, (48), 6 states have call predecessors, (48), 8 states have call successors, (48) [2023-12-24 15:19:59,998 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1049 transitions. [2023-12-24 15:19:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-24 15:19:59,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:19:59,999 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:20:00,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-24 15:20:00,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2023-12-24 15:20:00,432 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=3,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:20:00,432 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:20:00,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:20:00,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1164910922, now seen corresponding path program 1 times [2023-12-24 15:20:00,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:20:00,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786022726] [2023-12-24 15:20:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:20:00,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:20:00,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:20:00,445 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:20:00,446 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 (39)] Waiting until timeout for monitored process [2023-12-24 15:20:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:20:01,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 15:20:01,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:20:04,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:20:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 100 proven. 653 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2023-12-24 15:20:04,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:20:04,693 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 35 [2023-12-24 15:20:04,836 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 37 [2023-12-24 15:20:04,941 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 31 [2023-12-24 15:20:05,039 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 31 [2023-12-24 15:20:05,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-12-24 15:20:05,223 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 31 [2023-12-24 15:20:05,324 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 31 [2023-12-24 15:20:05,408 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 31 [2023-12-24 15:20:05,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:20:05,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786022726] [2023-12-24 15:20:05,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786022726] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:20:05,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1182656028] [2023-12-24 15:20:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:20:05,511 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:20:05,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:20:05,512 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:20:05,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2023-12-24 15:20:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:20:06,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 15:20:06,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:20:09,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:20:10,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-24 15:20:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 100 proven. 653 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2023-12-24 15:20:10,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:20:10,362 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 39 treesize of output 35 [2023-12-24 15:20:10,440 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 37 [2023-12-24 15:20:10,544 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 31 [2023-12-24 15:20:10,629 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 31 [2023-12-24 15:20:10,721 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 35 treesize of output 31 [2023-12-24 15:20:10,800 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 31 [2023-12-24 15:20:10,902 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 31 [2023-12-24 15:20:10,991 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 31 [2023-12-24 15:20:11,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1182656028] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:20:11,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:20:11,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 30 [2023-12-24 15:20:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794925121] [2023-12-24 15:20:11,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:20:11,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-24 15:20:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:20:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-24 15:20:11,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 15:20:11,082 INFO L87 Difference]: Start difference. First operand 887 states and 1049 transitions. Second operand has 31 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 26 states have internal predecessors, (155), 8 states have call successors, (48), 6 states have call predecessors, (48), 8 states have return successors, (48), 6 states have call predecessors, (48), 8 states have call successors, (48) [2023-12-24 15:20:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:20:14,451 INFO L93 Difference]: Finished difference Result 1554 states and 1869 transitions. [2023-12-24 15:20:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 15:20:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 26 states have internal predecessors, (155), 8 states have call successors, (48), 6 states have call predecessors, (48), 8 states have return successors, (48), 6 states have call predecessors, (48), 8 states have call successors, (48) Word has length 261 [2023-12-24 15:20:14,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:20:14,454 INFO L225 Difference]: With dead ends: 1554 [2023-12-24 15:20:14,454 INFO L226 Difference]: Without dead ends: 1217 [2023-12-24 15:20:14,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 510 SyntacticMatches, 15 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=718, Invalid=3064, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 15:20:14,456 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 460 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:20:14,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 836 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-24 15:20:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-12-24 15:20:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 863. [2023-12-24 15:20:14,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 772 states have (on average 1.177461139896373) internal successors, (909), 772 states have internal predecessors, (909), 54 states have call successors, (54), 36 states have call predecessors, (54), 36 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 15:20:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1017 transitions. [2023-12-24 15:20:14,541 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1017 transitions. Word has length 261 [2023-12-24 15:20:14,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:20:14,541 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1017 transitions. [2023-12-24 15:20:14,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 26 states have internal predecessors, (155), 8 states have call successors, (48), 6 states have call predecessors, (48), 8 states have return successors, (48), 6 states have call predecessors, (48), 8 states have call successors, (48) [2023-12-24 15:20:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1017 transitions. [2023-12-24 15:20:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-24 15:20:14,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:20:14,543 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:20:14,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-24 15:20:14,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2023-12-24 15:20:14,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:20:14,959 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:20:14,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:20:14,959 INFO L85 PathProgramCache]: Analyzing trace with hash 867581540, now seen corresponding path program 1 times [2023-12-24 15:20:14,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:20:14,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782267695] [2023-12-24 15:20:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:20:14,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:20:14,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:20:14,961 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:20:14,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-24 15:20:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:20:15,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 15:20:15,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:20:16,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-12-24 15:20:17,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:20:17,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2023-12-24 15:20:18,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:20:18,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 17 [2023-12-24 15:20:20,922 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 23 treesize of output 19 [2023-12-24 15:20:20,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-12-24 15:20:21,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:20:21,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 24 [2023-12-24 15:20:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2574 backedges. 246 proven. 1344 refuted. 0 times theorem prover too weak. 984 trivial. 0 not checked. [2023-12-24 15:20:22,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:20:23,483 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 58 treesize of output 50 [2023-12-24 15:20:37,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:20:37,709 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 159 treesize of output 130 [2023-12-24 15:20:52,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:20:52,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782267695] [2023-12-24 15:20:52,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782267695] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:20:52,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1778897999] [2023-12-24 15:20:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:20:52,715 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:20:52,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:20:52,716 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:20:52,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process Received shutdown request... [2023-12-24 15:28:52,371 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 15:28:52,375 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (42)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 15:28:52,384 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 15:28:53,404 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 (41)] Ended with exit code 0 [2023-12-24 15:28:53,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2023-12-24 15:28:53,600 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (42)] Forcibly destroying the process [2023-12-24 15:28:53,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-24 15:28:53,742 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 15:28:53,744 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (42)] Forcibly destroying the process [2023-12-24 15:28:53,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:28:53,744 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 264 with TraceHistMax 36,while AutomatonFreeRefinementEngine was Timeout during proof generation before using IpTcStrategyModuleZ3 [543665412]. [2023-12-24 15:28:53,747 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:28:53,749 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 15:28:53,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 03:28:53 BoogieIcfgContainer [2023-12-24 15:28:53,750 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 15:28:53,750 INFO L158 Benchmark]: Toolchain (without parser) took 875891.42ms. Allocated memory was 180.4MB in the beginning and 783.3MB in the end (delta: 602.9MB). Free memory was 145.1MB in the beginning and 358.9MB in the end (delta: -213.7MB). Peak memory consumption was 390.2MB. Max. memory is 8.0GB. [2023-12-24 15:28:53,751 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 180.4MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 15:28:53,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.58ms. Allocated memory is still 180.4MB. Free memory was 144.6MB in the beginning and 129.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-24 15:28:53,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.61ms. Allocated memory is still 180.4MB. Free memory was 128.9MB in the beginning and 126.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 15:28:53,751 INFO L158 Benchmark]: Boogie Preprocessor took 60.84ms. Allocated memory is still 180.4MB. Free memory was 126.3MB in the beginning and 121.6MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 15:28:53,751 INFO L158 Benchmark]: RCFGBuilder took 699.93ms. Allocated memory is still 180.4MB. Free memory was 121.6MB in the beginning and 83.3MB in the end (delta: 38.2MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-24 15:28:53,751 INFO L158 Benchmark]: TraceAbstraction took 874782.48ms. Allocated memory was 180.4MB in the beginning and 783.3MB in the end (delta: 602.9MB). Free memory was 82.8MB in the beginning and 358.9MB in the end (delta: -276.1MB). Peak memory consumption was 327.3MB. Max. memory is 8.0GB. [2023-12-24 15:28:53,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 137 [2023-12-24 15:28:53,759 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 180.4MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 288.58ms. Allocated memory is still 180.4MB. Free memory was 144.6MB in the beginning and 129.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.61ms. Allocated memory is still 180.4MB. Free memory was 128.9MB in the beginning and 126.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.84ms. Allocated memory is still 180.4MB. Free memory was 126.3MB in the beginning and 121.6MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 699.93ms. Allocated memory is still 180.4MB. Free memory was 121.6MB in the beginning and 83.3MB in the end (delta: 38.2MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 874782.48ms. Allocated memory was 180.4MB in the beginning and 783.3MB in the end (delta: 602.9MB). Free memory was 82.8MB in the beginning and 358.9MB in the end (delta: -276.1MB). Peak memory consumption was 327.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 264 with TraceHistMax 36,while AutomatonFreeRefinementEngine was Timeout during proof generation before using IpTcStrategyModuleZ3 [543665412]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 874.7s, OverallIterations: 30, TraceHistogramMax: 36, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 163.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 8533 SdHoareTripleChecker+Valid, 101.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8514 mSDsluCounter, 21108 SdHoareTripleChecker+Invalid, 96.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18085 mSDsCounter, 2705 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17541 IncrementalHoareTripleChecker+Invalid, 20258 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2705 mSolverCounterUnsat, 3023 mSDtfsCounter, 17541 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8396 GetRequests, 7537 SyntacticMatches, 62 SemanticMatches, 797 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20412 ImplicationChecksByTransitivity, 135.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1058occurred in iteration=19, InterpolantAutomatonStates: 478, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 29 MinimizatonAttempts, 4253 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5s SsaConstructionTime, 11.2s SatisfiabilityAnalysisTime, 165.3s InterpolantComputationTime, 6914 NumberOfCodeBlocks, 6914 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 7397 ConstructedInterpolants, 415 QuantifiedInterpolants, 128860 SizeOfPredicates, 602 NumberOfNonLiveVariables, 14429 ConjunctsInSsa, 808 ConjunctsInUnsatCore, 42 InterpolantComputations, 18 PerfectInterpolantSequences, 43943/55104 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown