/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-32.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 14:47:25,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 14:47:25,504 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 14:47:25,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 14:47:25,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 14:47:25,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 14:47:25,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 14:47:25,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 14:47:25,523 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 14:47:25,524 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 14:47:25,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 14:47:25,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 14:47:25,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 14:47:25,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 14:47:25,525 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 14:47:25,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 14:47:25,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 14:47:25,526 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 14:47:25,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 14:47:25,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 14:47:25,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 14:47:25,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 14:47:25,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 14:47:25,527 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 14:47:25,528 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 14:47:25,528 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 14:47:25,528 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 14:47:25,528 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 14:47:25,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 14:47:25,529 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 14:47:25,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 14:47:25,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 14:47:25,529 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 14:47:25,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 14:47:25,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:47:25,530 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 14:47:25,530 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 14:47:25,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 14:47:25,531 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 14:47:25,531 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 14:47:25,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 14:47:25,531 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 14:47:25,531 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 14:47:25,532 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 14:47:25,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 14:47:25,532 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 14:47:25,532 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 14:47:25,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 14:47:25,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 14:47:25,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 14:47:25,727 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 14:47:25,729 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 14:47:25,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-32.i [2023-12-24 14:47:26,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 14:47:26,925 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 14:47:26,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-32.i [2023-12-24 14:47:26,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f2053a3a/24134b0d35bc44b0ae57e95c533ce818/FLAGb46019e4f [2023-12-24 14:47:26,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f2053a3a/24134b0d35bc44b0ae57e95c533ce818 [2023-12-24 14:47:26,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 14:47:26,950 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 14:47:26,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 14:47:26,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 14:47:26,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 14:47:26,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:47:26" (1/1) ... [2023-12-24 14:47:26,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77805919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:26, skipping insertion in model container [2023-12-24 14:47:26,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:47:26" (1/1) ... [2023-12-24 14:47:26,976 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 14:47:27,069 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-32.i[917,930] [2023-12-24 14:47:27,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:47:27,137 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 14:47:27,145 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-32.i[917,930] [2023-12-24 14:47:27,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:47:27,198 INFO L206 MainTranslator]: Completed translation [2023-12-24 14:47:27,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27 WrapperNode [2023-12-24 14:47:27,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 14:47:27,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 14:47:27,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 14:47:27,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 14:47:27,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,263 INFO L138 Inliner]: procedures = 33, calls = 158, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 450 [2023-12-24 14:47:27,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 14:47:27,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 14:47:27,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 14:47:27,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 14:47:27,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,289 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,330 INFO L175 MemorySlicer]: Split 124 memory accesses to 6 slices as follows [2, 14, 23, 8, 24, 53]. 43 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 2, 3, 1, 2, 4]. The 15 writes are split as follows [0, 2, 5, 2, 2, 4]. [2023-12-24 14:47:27,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 14:47:27,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 14:47:27,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 14:47:27,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 14:47:27,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (1/1) ... [2023-12-24 14:47:27,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:47:27,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 14:47:27,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 14:47:27,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 14:47:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 14:47:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 14:47:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 14:47:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 14:47:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 14:47:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 14:47:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 14:47:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 14:47:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 14:47:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 14:47:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 14:47:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 14:47:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 14:47:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 14:47:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 14:47:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 14:47:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 14:47:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 14:47:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 14:47:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 14:47:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 14:47:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 14:47:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 14:47:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 14:47:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 14:47:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 14:47:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 14:47:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 14:47:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 14:47:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 14:47:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 14:47:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 14:47:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 14:47:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 14:47:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 14:47:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 14:47:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 14:47:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 14:47:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 14:47:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 14:47:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 14:47:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 14:47:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 14:47:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 14:47:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 14:47:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 14:47:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 14:47:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 14:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 14:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 14:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 14:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 14:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 14:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 14:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 14:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 14:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 14:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 14:47:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 14:47:27,575 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 14:47:27,577 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 14:47:28,037 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 14:47:28,117 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 14:47:28,118 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 14:47:28,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:47:28 BoogieIcfgContainer [2023-12-24 14:47:28,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 14:47:28,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 14:47:28,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 14:47:28,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 14:47:28,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 02:47:26" (1/3) ... [2023-12-24 14:47:28,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37593d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:47:28, skipping insertion in model container [2023-12-24 14:47:28,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:47:27" (2/3) ... [2023-12-24 14:47:28,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37593d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:47:28, skipping insertion in model container [2023-12-24 14:47:28,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:47:28" (3/3) ... [2023-12-24 14:47:28,125 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-32.i [2023-12-24 14:47:28,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 14:47:28,138 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 14:47:28,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 14:47:28,185 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;@58510e2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 14:47:28,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 14:47:28,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 71 states have (on average 1.408450704225352) internal successors, (100), 72 states have internal predecessors, (100), 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 14:47:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 14:47:28,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:47:28,206 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] [2023-12-24 14:47:28,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:47:28,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:47:28,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1301880535, now seen corresponding path program 1 times [2023-12-24 14:47:28,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:47:28,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430197005] [2023-12-24 14:47:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:47:28,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:47:28,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:47:28,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:47:28,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 14:47:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:47:28,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 14:47:28,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:47:28,492 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 14:47:28,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:47:28,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:47:28,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430197005] [2023-12-24 14:47:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430197005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:47:28,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:47:28,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 14:47:28,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014809319] [2023-12-24 14:47:28,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:47:28,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 14:47:28,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:47:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 14:47:28,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 14:47:28,523 INFO L87 Difference]: Start difference. First operand has 92 states, 71 states have (on average 1.408450704225352) internal successors, (100), 72 states have internal predecessors, (100), 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 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 14:47:28,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:47:28,569 INFO L93 Difference]: Finished difference Result 181 states and 288 transitions. [2023-12-24 14:47:28,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 14:47:28,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 124 [2023-12-24 14:47:28,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:47:28,578 INFO L225 Difference]: With dead ends: 181 [2023-12-24 14:47:28,579 INFO L226 Difference]: Without dead ends: 90 [2023-12-24 14:47:28,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 14:47:28,586 INFO L413 NwaCegarLoop]: 123 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, 123 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 14:47:28,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:47:28,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-24 14:47:28,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-12-24 14:47:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 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 14:47:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 127 transitions. [2023-12-24 14:47:28,618 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 127 transitions. Word has length 124 [2023-12-24 14:47:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:47:28,619 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 127 transitions. [2023-12-24 14:47:28,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 14:47:28,619 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 127 transitions. [2023-12-24 14:47:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 14:47:28,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:47:28,627 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] [2023-12-24 14:47:28,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 14:47:28,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:47:28,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:47:28,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:47:28,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1738315597, now seen corresponding path program 1 times [2023-12-24 14:47:28,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:47:28,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183719477] [2023-12-24 14:47:28,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:47:28,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:47:28,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:47:28,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:47:28,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 14:47:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:47:28,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 14:47:28,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:47:29,036 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 14:47:29,179 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 14:47:29,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:47:29,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:47:29,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183719477] [2023-12-24 14:47:29,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183719477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:47:29,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:47:29,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 14:47:29,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123384010] [2023-12-24 14:47:29,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:47:29,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 14:47:29,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:47:29,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 14:47:29,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 14:47:29,191 INFO L87 Difference]: Start difference. First operand 90 states and 127 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 14:47:29,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:47:29,356 INFO L93 Difference]: Finished difference Result 306 states and 432 transitions. [2023-12-24 14:47:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 14:47:29,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 124 [2023-12-24 14:47:29,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:47:29,359 INFO L225 Difference]: With dead ends: 306 [2023-12-24 14:47:29,359 INFO L226 Difference]: Without dead ends: 217 [2023-12-24 14:47:29,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:47:29,360 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 203 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:47:29,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 350 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:47:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-24 14:47:29,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 185. [2023-12-24 14:47:29,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 146 states have (on average 1.3013698630136987) internal successors, (190), 146 states have internal predecessors, (190), 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 14:47:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 262 transitions. [2023-12-24 14:47:29,382 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 262 transitions. Word has length 124 [2023-12-24 14:47:29,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:47:29,383 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 262 transitions. [2023-12-24 14:47:29,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 14:47:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 262 transitions. [2023-12-24 14:47:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 14:47:29,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:47:29,384 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 14:47:29,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 14:47:29,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:47:29,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:47:29,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:47:29,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1084937767, now seen corresponding path program 1 times [2023-12-24 14:47:29,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:47:29,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223003084] [2023-12-24 14:47:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:47:29,590 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 14:47:29,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:47:29,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:47:29,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 14:47:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:47:29,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 14:47:29,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:47:30,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:47:31,225 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 24 treesize of output 23 [2023-12-24 14:47:31,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:47:31,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 14:47:32,152 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 14:47:32,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2023-12-24 14:47:32,674 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:47:32,674 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 28 treesize of output 14 [2023-12-24 14:47:33,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:47:33,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 37 [2023-12-24 14:47:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 75 proven. 368 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-24 14:47:33,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:47:33,587 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 14:47:33,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:47:33,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223003084] [2023-12-24 14:47:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223003084] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:47:33,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:47:33,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18] total 26 [2023-12-24 14:47:33,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023309378] [2023-12-24 14:47:33,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:47:33,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:47:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:47:33,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:47:33,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2023-12-24 14:47:33,589 INFO L87 Difference]: Start difference. First operand 185 states and 262 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 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 14:47:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:47:35,422 INFO L93 Difference]: Finished difference Result 728 states and 1033 transitions. [2023-12-24 14:47:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 14:47:35,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 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 14:47:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:47:35,429 INFO L225 Difference]: With dead ends: 728 [2023-12-24 14:47:35,429 INFO L226 Difference]: Without dead ends: 544 [2023-12-24 14:47:35,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=182, Invalid=1224, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 14:47:35,431 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 360 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:47:35,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 995 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 14:47:35,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-12-24 14:47:35,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 449. [2023-12-24 14:47:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 366 states have (on average 1.3169398907103824) internal successors, (482), 370 states have internal predecessors, (482), 76 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-24 14:47:35,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 634 transitions. [2023-12-24 14:47:35,472 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 634 transitions. Word has length 132 [2023-12-24 14:47:35,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:47:35,472 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 634 transitions. [2023-12-24 14:47:35,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 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 14:47:35,472 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 634 transitions. [2023-12-24 14:47:35,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 14:47:35,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:47:35,474 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 14:47:35,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 14:47:35,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:47:35,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:47:35,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:47:35,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1819575011, now seen corresponding path program 1 times [2023-12-24 14:47:35,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:47:35,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211077768] [2023-12-24 14:47:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:47:35,687 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 14:47:35,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:47:35,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:47:35,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 14:47:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:47:35,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 14:47:35,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:47:36,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:47:36,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:47:36,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:47:37,042 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 19 treesize of output 19 [2023-12-24 14:47:37,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:47:37,136 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 14:47:37,174 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 14:47:37,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:47:37,338 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 14:47:37,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:47:37,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211077768] [2023-12-24 14:47:37,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211077768] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:47:37,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:47:37,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-24 14:47:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545936205] [2023-12-24 14:47:37,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:47:37,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:47:37,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:47:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:47:37,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-24 14:47:37,340 INFO L87 Difference]: Start difference. First operand 449 states and 634 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 14:47:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:47:37,907 INFO L93 Difference]: Finished difference Result 1052 states and 1485 transitions. [2023-12-24 14:47:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 14:47:37,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 133 [2023-12-24 14:47:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:47:37,912 INFO L225 Difference]: With dead ends: 1052 [2023-12-24 14:47:37,912 INFO L226 Difference]: Without dead ends: 604 [2023-12-24 14:47:37,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-12-24 14:47:37,914 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 279 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:47:37,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 745 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:47:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-12-24 14:47:37,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 477. [2023-12-24 14:47:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 384 states have (on average 1.3020833333333333) internal successors, (500), 388 states have internal predecessors, (500), 84 states have call successors, (84), 8 states have call predecessors, (84), 8 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-24 14:47:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 668 transitions. [2023-12-24 14:47:37,937 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 668 transitions. Word has length 133 [2023-12-24 14:47:37,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:47:37,937 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 668 transitions. [2023-12-24 14:47:37,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 14:47:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 668 transitions. [2023-12-24 14:47:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 14:47:37,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:47:37,938 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] [2023-12-24 14:47:37,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 14:47:38,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:47:38,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:47:38,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:47:38,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1886227570, now seen corresponding path program 1 times [2023-12-24 14:47:38,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:47:38,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448572524] [2023-12-24 14:47:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:47:38,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:47:38,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:47:38,149 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:47:38,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 14:47:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:47:38,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 14:47:38,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:47:39,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:47:40,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:47:40,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 14:47:41,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 59 [2023-12-24 14:47:42,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:47:42,235 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 85 treesize of output 49 [2023-12-24 14:47:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 106 proven. 71 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 14:47:42,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:47:44,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:47:44,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448572524] [2023-12-24 14:47:44,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448572524] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:47:44,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1375471396] [2023-12-24 14:47:44,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:47:44,474 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:47:44,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:47:44,517 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:47:44,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 14:47:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:47:44,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-24 14:47:44,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:47:47,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:47:48,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 14:47:49,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:47:50,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 14:47:51,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 14:47:54,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 63 [2023-12-24 14:47:54,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 14:47:55,440 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 26 treesize of output 18 [2023-12-24 14:47:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 89 proven. 351 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 14:47:57,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:48:02,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1375471396] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:48:02,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:48:02,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 30] total 51 [2023-12-24 14:48:02,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758214907] [2023-12-24 14:48:02,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:48:02,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-24 14:48:02,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:48:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-24 14:48:02,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=4819, Unknown=0, NotChecked=0, Total=5402 [2023-12-24 14:48:02,100 INFO L87 Difference]: Start difference. First operand 477 states and 668 transitions. Second operand has 52 states, 47 states have (on average 2.3617021276595747) internal successors, (111), 46 states have internal predecessors, (111), 11 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 14:48:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:48:36,816 INFO L93 Difference]: Finished difference Result 1148 states and 1551 transitions. [2023-12-24 14:48:36,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-24 14:48:36,817 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 47 states have (on average 2.3617021276595747) internal successors, (111), 46 states have internal predecessors, (111), 11 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 134 [2023-12-24 14:48:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:48:36,819 INFO L225 Difference]: With dead ends: 1148 [2023-12-24 14:48:36,820 INFO L226 Difference]: Without dead ends: 672 [2023-12-24 14:48:36,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9789 ImplicationChecksByTransitivity, 37.1s TimeCoverageRelationStatistics Valid=4568, Invalid=26584, Unknown=0, NotChecked=0, Total=31152 [2023-12-24 14:48:36,829 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 2864 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 4211 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2865 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 4918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 4211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:48:36,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2865 Valid, 2394 Invalid, 4918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 4211 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-12-24 14:48:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-12-24 14:48:36,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 483. [2023-12-24 14:48:36,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 388 states have (on average 1.288659793814433) internal successors, (500), 392 states have internal predecessors, (500), 80 states have call successors, (80), 14 states have call predecessors, (80), 14 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 14:48:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 660 transitions. [2023-12-24 14:48:36,906 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 660 transitions. Word has length 134 [2023-12-24 14:48:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:48:36,907 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 660 transitions. [2023-12-24 14:48:36,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 47 states have (on average 2.3617021276595747) internal successors, (111), 46 states have internal predecessors, (111), 11 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 14:48:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 660 transitions. [2023-12-24 14:48:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 14:48:36,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:48:36,909 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] [2023-12-24 14:48:36,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-24 14:48:37,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 14:48:37,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:48:37,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:48:37,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:48:37,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1742443630, now seen corresponding path program 1 times [2023-12-24 14:48:37,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:48:37,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627639799] [2023-12-24 14:48:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:48:37,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:48:37,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:48:37,328 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:48:37,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 14:48:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:48:37,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:48:37,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:48:37,493 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 14:48:37,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:48:37,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:48:37,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627639799] [2023-12-24 14:48:37,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627639799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:48:37,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:48:37,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:48:37,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736918388] [2023-12-24 14:48:37,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:48:37,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:48:37,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:48:37,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:48:37,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:48:37,497 INFO L87 Difference]: Start difference. First operand 483 states and 660 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (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 14:48:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:48:37,575 INFO L93 Difference]: Finished difference Result 1037 states and 1421 transitions. [2023-12-24 14:48:37,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:48:37,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (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 134 [2023-12-24 14:48:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:48:37,579 INFO L225 Difference]: With dead ends: 1037 [2023-12-24 14:48:37,579 INFO L226 Difference]: Without dead ends: 555 [2023-12-24 14:48:37,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:48:37,582 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 60 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:48:37,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 454 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:48:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-12-24 14:48:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 501. [2023-12-24 14:48:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 406 states have (on average 1.2758620689655173) internal successors, (518), 410 states have internal predecessors, (518), 80 states have call successors, (80), 14 states have call predecessors, (80), 14 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 14:48:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 678 transitions. [2023-12-24 14:48:37,630 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 678 transitions. Word has length 134 [2023-12-24 14:48:37,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:48:37,631 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 678 transitions. [2023-12-24 14:48:37,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (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 14:48:37,631 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 678 transitions. [2023-12-24 14:48:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 14:48:37,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:48:37,632 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] [2023-12-24 14:48:37,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 14:48:37,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:48:37,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:48:37,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:48:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1644467598, now seen corresponding path program 1 times [2023-12-24 14:48:37,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:48:37,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396041216] [2023-12-24 14:48:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:48:37,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:48:37,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:48:37,842 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:48:37,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 14:48:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:48:38,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-24 14:48:38,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:48:39,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:48:39,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:48:40,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 14:48:41,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 62 [2023-12-24 14:48:42,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:48:42,367 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 113 treesize of output 61 [2023-12-24 14:48:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 176 proven. 71 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-12-24 14:48:42,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:48:45,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:48:45,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396041216] [2023-12-24 14:48:45,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396041216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:48:45,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [870571278] [2023-12-24 14:48:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:48:45,889 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:48:45,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:48:45,890 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:48:45,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 14:48:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:48:46,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-24 14:48:46,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:48:48,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:48:50,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 14:48:51,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:48:52,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:48:53,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 14:48:57,302 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 77 treesize of output 62 [2023-12-24 14:48:57,621 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 14:48:58,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 14:48:59,793 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 127 treesize of output 71 [2023-12-24 14:49:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 123 proven. 351 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-24 14:49:00,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:49:08,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [870571278] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:49:08,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:49:08,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 32] total 55 [2023-12-24 14:49:08,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259385879] [2023-12-24 14:49:08,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:49:08,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-24 14:49:08,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:49:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-24 14:49:08,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=5931, Unknown=0, NotChecked=0, Total=6642 [2023-12-24 14:49:08,018 INFO L87 Difference]: Start difference. First operand 501 states and 678 transitions. Second operand has 56 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 52 states have internal predecessors, (119), 13 states have call successors, (36), 10 states have call predecessors, (36), 13 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) [2023-12-24 14:49:44,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:49:44,124 INFO L93 Difference]: Finished difference Result 1390 states and 1848 transitions. [2023-12-24 14:49:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-24 14:49:44,126 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 52 states have internal predecessors, (119), 13 states have call successors, (36), 10 states have call predecessors, (36), 13 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) Word has length 134 [2023-12-24 14:49:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:49:44,128 INFO L225 Difference]: With dead ends: 1390 [2023-12-24 14:49:44,129 INFO L226 Difference]: Without dead ends: 890 [2023-12-24 14:49:44,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9961 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=4804, Invalid=27776, Unknown=0, NotChecked=0, Total=32580 [2023-12-24 14:49:44,136 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1834 mSDsluCounter, 4026 mSDsCounter, 0 mSdLazyCounter, 5655 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 4190 SdHoareTripleChecker+Invalid, 6195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 5655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:49:44,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 4190 Invalid, 6195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [540 Valid, 5655 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2023-12-24 14:49:44,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-12-24 14:49:44,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 500. [2023-12-24 14:49:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 413 states have (on average 1.2929782082324455) internal successors, (534), 416 states have internal predecessors, (534), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 69 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 14:49:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 678 transitions. [2023-12-24 14:49:44,200 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 678 transitions. Word has length 134 [2023-12-24 14:49:44,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:49:44,200 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 678 transitions. [2023-12-24 14:49:44,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 52 states have internal predecessors, (119), 13 states have call successors, (36), 10 states have call predecessors, (36), 13 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) [2023-12-24 14:49:44,201 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 678 transitions. [2023-12-24 14:49:44,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 14:49:44,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:49:44,203 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 14:49:44,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 14:49:44,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-24 14:49:44,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:49:44,612 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:49:44,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:49:44,612 INFO L85 PathProgramCache]: Analyzing trace with hash 274472630, now seen corresponding path program 1 times [2023-12-24 14:49:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:49:44,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649394086] [2023-12-24 14:49:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:49:44,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:49:44,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:49:44,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:49:44,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 14:49:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:49:44,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 14:49:44,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:49:46,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:49:46,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:49:47,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 14:49:48,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2023-12-24 14:49:48,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:49:48,637 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 85 treesize of output 45 [2023-12-24 14:49:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 176 proven. 71 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-12-24 14:49:48,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:49:51,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:49:51,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649394086] [2023-12-24 14:49:51,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649394086] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:49:51,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [410980087] [2023-12-24 14:49:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:49:51,029 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:49:51,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:49:51,030 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:49:51,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 14:49:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:49:51,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-24 14:49:51,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:49:53,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:49:54,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-12-24 14:49:55,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:49:55,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 14:49:57,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 14:50:00,116 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 72 treesize of output 61 [2023-12-24 14:50:00,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-24 14:50:00,533 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 31 treesize of output 19 [2023-12-24 14:50:00,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 14:50:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 129 proven. 351 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 14:50:02,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:50:09,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [410980087] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:50:09,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:50:09,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 30] total 49 [2023-12-24 14:50:09,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359386148] [2023-12-24 14:50:09,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:50:09,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-24 14:50:09,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:50:09,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-24 14:50:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=476, Invalid=4215, Unknown=1, NotChecked=0, Total=4692 [2023-12-24 14:50:09,524 INFO L87 Difference]: Start difference. First operand 500 states and 678 transitions. Second operand has 50 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 45 states have internal predecessors, (119), 13 states have call successors, (36), 10 states have call predecessors, (36), 13 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) [2023-12-24 14:50:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:50:41,585 INFO L93 Difference]: Finished difference Result 1456 states and 1919 transitions. [2023-12-24 14:50:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-24 14:50:41,587 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 45 states have internal predecessors, (119), 13 states have call successors, (36), 10 states have call predecessors, (36), 13 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) Word has length 135 [2023-12-24 14:50:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:50:41,590 INFO L225 Difference]: With dead ends: 1456 [2023-12-24 14:50:41,590 INFO L226 Difference]: Without dead ends: 957 [2023-12-24 14:50:41,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5904 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=3501, Invalid=17960, Unknown=1, NotChecked=0, Total=21462 [2023-12-24 14:50:41,593 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1931 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 5008 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 5481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 5008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:50:41,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 2852 Invalid, 5481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 5008 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2023-12-24 14:50:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2023-12-24 14:50:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 447. [2023-12-24 14:50:41,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 372 states have (on average 1.293010752688172) internal successors, (481), 374 states have internal predecessors, (481), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 14:50:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 597 transitions. [2023-12-24 14:50:41,682 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 597 transitions. Word has length 135 [2023-12-24 14:50:41,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:50:41,682 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 597 transitions. [2023-12-24 14:50:41,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 45 states have internal predecessors, (119), 13 states have call successors, (36), 10 states have call predecessors, (36), 13 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) [2023-12-24 14:50:41,682 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 597 transitions. [2023-12-24 14:50:41,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 14:50:41,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:50:41,684 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 14:50:41,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 14:50:41,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 14:50:42,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:50:42,089 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:50:42,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:50:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1985130588, now seen corresponding path program 1 times [2023-12-24 14:50:42,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:50:42,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265000255] [2023-12-24 14:50:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:50:42,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:50:42,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:50:42,091 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:50:42,091 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 (13)] Waiting until timeout for monitored process [2023-12-24 14:50:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:50:42,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 14:50:42,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:50:43,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:50:44,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:50:44,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 14:50:45,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 52 [2023-12-24 14:50:45,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:50:45,750 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 76 treesize of output 40 [2023-12-24 14:50:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 106 proven. 71 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 14:50:45,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:50:48,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:50:48,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265000255] [2023-12-24 14:50:48,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265000255] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:50:48,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1534054845] [2023-12-24 14:50:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:50:48,860 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:50:48,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:50:48,861 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:50:48,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-24 14:50:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:50:49,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-24 14:50:49,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:50:51,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:50:51,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 14:50:52,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 14:50:54,399 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 85 treesize of output 66 [2023-12-24 14:50:54,716 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 14 [2023-12-24 14:50:54,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 14:50:54,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 14:50:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 262 proven. 71 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2023-12-24 14:50:56,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:50:56,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-24 14:51:32,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1534054845] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:51:32,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:51:32,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26] total 44 [2023-12-24 14:51:32,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554644002] [2023-12-24 14:51:32,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:51:32,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-24 14:51:32,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:51:32,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-24 14:51:32,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=3713, Unknown=5, NotChecked=0, Total=4290 [2023-12-24 14:51:32,765 INFO L87 Difference]: Start difference. First operand 447 states and 597 transitions. Second operand has 45 states, 41 states have (on average 2.658536585365854) internal successors, (109), 41 states have internal predecessors, (109), 9 states have call successors, (36), 7 states have call predecessors, (36), 9 states have return successors, (36), 8 states have call predecessors, (36), 9 states have call successors, (36) [2023-12-24 14:51:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:51:59,454 INFO L93 Difference]: Finished difference Result 1328 states and 1740 transitions. [2023-12-24 14:51:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-24 14:51:59,456 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 2.658536585365854) internal successors, (109), 41 states have internal predecessors, (109), 9 states have call successors, (36), 7 states have call predecessors, (36), 9 states have return successors, (36), 8 states have call predecessors, (36), 9 states have call successors, (36) Word has length 135 [2023-12-24 14:51:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:51:59,459 INFO L225 Difference]: With dead ends: 1328 [2023-12-24 14:51:59,459 INFO L226 Difference]: Without dead ends: 882 [2023-12-24 14:51:59,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3279 ImplicationChecksByTransitivity, 56.8s TimeCoverageRelationStatistics Valid=2181, Invalid=9586, Unknown=5, NotChecked=0, Total=11772 [2023-12-24 14:51:59,463 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1061 mSDsluCounter, 3256 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 4017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:51:59,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 3444 Invalid, 4017 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [361 Valid, 3656 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-12-24 14:51:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2023-12-24 14:51:59,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 425. [2023-12-24 14:51:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 350 states have (on average 1.28) internal successors, (448), 352 states have internal predecessors, (448), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 14:51:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 564 transitions. [2023-12-24 14:51:59,560 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 564 transitions. Word has length 135 [2023-12-24 14:51:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:51:59,560 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 564 transitions. [2023-12-24 14:51:59,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 2.658536585365854) internal successors, (109), 41 states have internal predecessors, (109), 9 states have call successors, (36), 7 states have call predecessors, (36), 9 states have return successors, (36), 8 states have call predecessors, (36), 9 states have call successors, (36) [2023-12-24 14:51:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 564 transitions. [2023-12-24 14:51:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-24 14:51:59,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:51:59,562 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] [2023-12-24 14:51:59,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-24 14:51:59,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 14:51:59,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:51:59,966 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:51:59,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:51:59,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1721258455, now seen corresponding path program 1 times [2023-12-24 14:51:59,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:51:59,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091590027] [2023-12-24 14:51:59,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:51:59,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:51:59,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:51:59,968 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:51:59,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 14:52:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:52:00,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 14:52:00,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:52:00,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:52:00,300 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 42 treesize of output 38 [2023-12-24 14:52:00,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 14:52:00,380 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 14:52:00,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:52:00,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:52:00,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091590027] [2023-12-24 14:52:00,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091590027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:52:00,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:52:00,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:52:00,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797496369] [2023-12-24 14:52:00,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:52:00,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:52:00,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:52:00,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:52:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:52:00,382 INFO L87 Difference]: Start difference. First operand 425 states and 564 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 14:52:01,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:52:01,264 INFO L93 Difference]: Finished difference Result 1105 states and 1479 transitions. [2023-12-24 14:52:01,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:52:01,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 136 [2023-12-24 14:52:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:52:01,268 INFO L225 Difference]: With dead ends: 1105 [2023-12-24 14:52:01,268 INFO L226 Difference]: Without dead ends: 681 [2023-12-24 14:52:01,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:52:01,269 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 109 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:52:01,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 340 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 14:52:01,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2023-12-24 14:52:01,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 498. [2023-12-24 14:52:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 423 states have (on average 1.293144208037825) internal successors, (547), 425 states have internal predecessors, (547), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 14:52:01,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 663 transitions. [2023-12-24 14:52:01,354 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 663 transitions. Word has length 136 [2023-12-24 14:52:01,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:52:01,355 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 663 transitions. [2023-12-24 14:52:01,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 14:52:01,355 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 663 transitions. [2023-12-24 14:52:01,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-24 14:52:01,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:52:01,356 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] [2023-12-24 14:52:01,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 14:52:01,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:52:01,564 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:52:01,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:52:01,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1466186102, now seen corresponding path program 1 times [2023-12-24 14:52:01,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:52:01,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221675343] [2023-12-24 14:52:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:52:01,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:52:01,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:52:01,567 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:52:01,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 14:52:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:52:01,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 14:52:01,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:52:01,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 14:52:01,845 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 14:52:01,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:52:01,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:52:01,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221675343] [2023-12-24 14:52:01,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221675343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:52:01,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:52:01,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 14:52:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805036958] [2023-12-24 14:52:01,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:52:01,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:52:01,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:52:01,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:52:01,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:52:01,847 INFO L87 Difference]: Start difference. First operand 498 states and 663 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:52:02,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:52:02,229 INFO L93 Difference]: Finished difference Result 763 states and 992 transitions. [2023-12-24 14:52:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 14:52:02,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 136 [2023-12-24 14:52:02,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:52:02,232 INFO L225 Difference]: With dead ends: 763 [2023-12-24 14:52:02,232 INFO L226 Difference]: Without dead ends: 761 [2023-12-24 14:52:02,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-24 14:52:02,233 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 73 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:52:02,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 592 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:52:02,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-12-24 14:52:02,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 751. [2023-12-24 14:52:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 656 states have (on average 1.2652439024390243) internal successors, (830), 662 states have internal predecessors, (830), 74 states have call successors, (74), 20 states have call predecessors, (74), 20 states have return successors, (74), 68 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-24 14:52:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 978 transitions. [2023-12-24 14:52:02,343 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 978 transitions. Word has length 136 [2023-12-24 14:52:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:52:02,344 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 978 transitions. [2023-12-24 14:52:02,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:52:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 978 transitions. [2023-12-24 14:52:02,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-24 14:52:02,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:52:02,345 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] [2023-12-24 14:52:02,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 14:52:02,550 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 14:52:02,550 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:52:02,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:52:02,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1048971979, now seen corresponding path program 1 times [2023-12-24 14:52:02,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:52:02,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819971163] [2023-12-24 14:52:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:52:02,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:52:02,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:52:02,552 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 14:52:02,552 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 14:52:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:52:02,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 14:52:02,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:52:04,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:52:05,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 14:52:06,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2023-12-24 14:52:07,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:52:07,549 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 90 treesize of output 50 [2023-12-24 14:52:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 106 proven. 71 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 14:52:08,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:52:10,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:52:10,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819971163] [2023-12-24 14:52:10,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819971163] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:52:10,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1693460743] [2023-12-24 14:52:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:52:10,469 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:52:10,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:52:10,470 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 14:52:10,470 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 14:52:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:52:10,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-24 14:52:10,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:52:13,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:52:15,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 14:52:17,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:52:18,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 14:52:21,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2023-12-24 14:52:21,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 14:52:22,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 14:52:23,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 55 [2023-12-24 14:52:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 83 proven. 351 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-24 14:52:23,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:52:27,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1693460743] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:52:27,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:52:27,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 31] total 52 [2023-12-24 14:52:27,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780079601] [2023-12-24 14:52:27,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:52:27,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-24 14:52:27,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:52:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-24 14:52:27,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=5063, Unknown=0, NotChecked=0, Total=5550 [2023-12-24 14:52:27,785 INFO L87 Difference]: Start difference. First operand 751 states and 978 transitions. Second operand has 53 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 11 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (36), 10 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 14:53:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:53:26,432 INFO L93 Difference]: Finished difference Result 2252 states and 2888 transitions. [2023-12-24 14:53:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-24 14:53:26,433 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 11 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (36), 10 states have call predecessors, (36), 11 states have call successors, (36) Word has length 136 [2023-12-24 14:53:26,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:53:26,436 INFO L225 Difference]: With dead ends: 2252 [2023-12-24 14:53:26,437 INFO L226 Difference]: Without dead ends: 1502 [2023-12-24 14:53:26,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11559 ImplicationChecksByTransitivity, 53.5s TimeCoverageRelationStatistics Valid=4676, Invalid=33154, Unknown=0, NotChecked=0, Total=37830 [2023-12-24 14:53:26,440 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 2063 mSDsluCounter, 5289 mSDsCounter, 0 mSdLazyCounter, 7061 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 7811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 7061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:53:26,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2064 Valid, 5473 Invalid, 7811 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [750 Valid, 7061 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2023-12-24 14:53:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2023-12-24 14:53:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 794. [2023-12-24 14:53:26,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 689 states have (on average 1.2568940493468794) internal successors, (866), 696 states have internal predecessors, (866), 82 states have call successors, (82), 22 states have call predecessors, (82), 22 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 14:53:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1030 transitions. [2023-12-24 14:53:26,576 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1030 transitions. Word has length 136 [2023-12-24 14:53:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:53:26,577 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1030 transitions. [2023-12-24 14:53:26,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 11 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (36), 10 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 14:53:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1030 transitions. [2023-12-24 14:53:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 14:53:26,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:53:26,578 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 14:53:26,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-24 14:53:26,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-24 14:53:26,983 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 14:53:26,986 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:53:26,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:53:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash -134561939, now seen corresponding path program 1 times [2023-12-24 14:53:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:53:26,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889749872] [2023-12-24 14:53:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:53:26,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:53:26,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:53:26,988 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:53:26,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 14:53:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:53:27,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:53:27,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:53:27,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-24 14:53:27,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2023-12-24 14:53:27,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2023-12-24 14:53:27,226 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 14:53:27,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:53:27,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:53:27,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889749872] [2023-12-24 14:53:27,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889749872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:53:27,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:53:27,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 14:53:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484034563] [2023-12-24 14:53:27,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:53:27,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:53:27,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:53:27,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:53:27,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:53:27,227 INFO L87 Difference]: Start difference. First operand 794 states and 1030 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 14:53:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:53:27,714 INFO L93 Difference]: Finished difference Result 1719 states and 2265 transitions. [2023-12-24 14:53:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 14:53:27,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 14:53:27,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:53:27,717 INFO L225 Difference]: With dead ends: 1719 [2023-12-24 14:53:27,718 INFO L226 Difference]: Without dead ends: 1229 [2023-12-24 14:53:27,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:53:27,719 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 179 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:53:27,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 900 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:53:27,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2023-12-24 14:53:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 858. [2023-12-24 14:53:27,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 753 states have (on average 1.2669322709163346) internal successors, (954), 760 states have internal predecessors, (954), 82 states have call successors, (82), 22 states have call predecessors, (82), 22 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 14:53:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1118 transitions. [2023-12-24 14:53:27,855 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1118 transitions. Word has length 137 [2023-12-24 14:53:27,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:53:27,856 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1118 transitions. [2023-12-24 14:53:27,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 14:53:27,856 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1118 transitions. [2023-12-24 14:53:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 14:53:27,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:53:27,857 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 14:53:27,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 14:53:28,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:53:28,064 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:53:28,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:53:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash 89353085, now seen corresponding path program 1 times [2023-12-24 14:53:28,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:53:28,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54650372] [2023-12-24 14:53:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:53:28,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:53:28,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:53:28,066 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:53:28,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 14:53:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:53:28,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 14:53:28,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:53:29,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:53:30,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:53:30,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2023-12-24 14:53:31,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:53:31,104 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 57 treesize of output 29 [2023-12-24 14:53:31,344 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 14:53:31,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:53:33,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:53:33,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54650372] [2023-12-24 14:53:33,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54650372] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:53:33,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1473260330] [2023-12-24 14:53:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:53:33,307 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:53:33,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:53:33,308 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:53:33,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-24 14:53:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:53:33,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 14:53:33,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:53:36,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:53:37,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 14:53:38,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2023-12-24 14:53:39,114 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 14 [2023-12-24 14:53:39,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 14:53:39,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 14:53:40,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 49 [2023-12-24 14:53:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 176 proven. 71 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-12-24 14:53:40,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:53:41,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-24 14:53:44,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1473260330] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:53:44,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:53:44,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 25] total 35 [2023-12-24 14:53:44,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970697147] [2023-12-24 14:53:44,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:53:44,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 14:53:44,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:53:44,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 14:53:44,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=2656, Unknown=0, NotChecked=0, Total=2970 [2023-12-24 14:53:44,558 INFO L87 Difference]: Start difference. First operand 858 states and 1118 transitions. Second operand has 36 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 7 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 7 states have call successors, (36) [2023-12-24 14:54:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:54:09,956 INFO L93 Difference]: Finished difference Result 2458 states and 3176 transitions. [2023-12-24 14:54:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-24 14:54:09,957 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 7 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 7 states have call successors, (36) Word has length 137 [2023-12-24 14:54:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:54:09,961 INFO L225 Difference]: With dead ends: 2458 [2023-12-24 14:54:09,961 INFO L226 Difference]: Without dead ends: 1601 [2023-12-24 14:54:09,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3000 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=2039, Invalid=10843, Unknown=0, NotChecked=0, Total=12882 [2023-12-24 14:54:09,963 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1152 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 3770 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 4059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 3770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:54:09,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 3163 Invalid, 4059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 3770 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-12-24 14:54:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2023-12-24 14:54:10,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 918. [2023-12-24 14:54:10,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 803 states have (on average 1.261519302615193) internal successors, (1013), 811 states have internal predecessors, (1013), 90 states have call successors, (90), 24 states have call predecessors, (90), 24 states have return successors, (90), 82 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 14:54:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1193 transitions. [2023-12-24 14:54:10,151 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1193 transitions. Word has length 137 [2023-12-24 14:54:10,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:54:10,152 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1193 transitions. [2023-12-24 14:54:10,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 7 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 7 states have call successors, (36) [2023-12-24 14:54:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1193 transitions. [2023-12-24 14:54:10,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 14:54:10,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:54:10,153 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 14:54:10,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 14:54:10,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-12-24 14:54:10,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:54:10,559 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:54:10,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:54:10,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1789263100, now seen corresponding path program 1 times [2023-12-24 14:54:10,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:54:10,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013755330] [2023-12-24 14:54:10,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:54:10,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:54:10,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:54:10,561 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:54:10,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 14:54:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:54:10,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 14:54:10,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:54:11,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 14:54:23,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:54:23,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 130 [2023-12-24 14:54:23,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2023-12-24 14:54:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 7 proven. 341 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 14:54:23,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:54:25,273 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 14:54:25,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:54:25,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013755330] [2023-12-24 14:54:25,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013755330] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:54:25,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:54:25,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 30 [2023-12-24 14:54:25,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811394855] [2023-12-24 14:54:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:54:25,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 14:54:25,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:54:25,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 14:54:25,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=691, Unknown=2, NotChecked=0, Total=870 [2023-12-24 14:54:25,275 INFO L87 Difference]: Start difference. First operand 918 states and 1193 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 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 14:54:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:54:33,597 INFO L93 Difference]: Finished difference Result 2884 states and 3740 transitions. [2023-12-24 14:54:33,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 14:54:33,600 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 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 14:54:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:54:33,605 INFO L225 Difference]: With dead ends: 2884 [2023-12-24 14:54:33,605 INFO L226 Difference]: Without dead ends: 1967 [2023-12-24 14:54:33,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=473, Invalid=1781, Unknown=2, NotChecked=0, Total=2256 [2023-12-24 14:54:33,607 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 348 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:54:33,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 1801 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-24 14:54:33,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2023-12-24 14:54:33,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1033. [2023-12-24 14:54:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 918 states have (on average 1.2581699346405228) internal successors, (1155), 926 states have internal predecessors, (1155), 90 states have call successors, (90), 24 states have call predecessors, (90), 24 states have return successors, (90), 82 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 14:54:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1335 transitions. [2023-12-24 14:54:33,792 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1335 transitions. Word has length 138 [2023-12-24 14:54:33,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:54:33,792 INFO L495 AbstractCegarLoop]: Abstraction has 1033 states and 1335 transitions. [2023-12-24 14:54:33,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 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 14:54:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1335 transitions. [2023-12-24 14:54:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 14:54:33,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:54:33,795 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 14:54:33,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-24 14:54:33,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:54:34,000 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:54:34,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:54:34,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1360434925, now seen corresponding path program 1 times [2023-12-24 14:54:34,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:54:34,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708493820] [2023-12-24 14:54:34,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:54:34,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:54:34,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:54:34,002 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:54:34,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 14:54:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:54:34,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:54:34,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:54:34,218 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 14:54:34,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:54:34,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:54:34,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708493820] [2023-12-24 14:54:34,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708493820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:54:34,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:54:34,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:54:34,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040332953] [2023-12-24 14:54:34,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:54:34,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:54:34,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:54:34,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:54:34,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:54:34,220 INFO L87 Difference]: Start difference. First operand 1033 states and 1335 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 14:54:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:54:34,502 INFO L93 Difference]: Finished difference Result 2319 states and 3008 transitions. [2023-12-24 14:54:34,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:54:34,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 14:54:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:54:34,507 INFO L225 Difference]: With dead ends: 2319 [2023-12-24 14:54:34,507 INFO L226 Difference]: Without dead ends: 1287 [2023-12-24 14:54:34,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 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 14:54:34,508 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 63 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:54:34,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 664 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:54:34,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2023-12-24 14:54:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1033. [2023-12-24 14:54:34,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 918 states have (on average 1.2483660130718954) internal successors, (1146), 926 states have internal predecessors, (1146), 90 states have call successors, (90), 24 states have call predecessors, (90), 24 states have return successors, (90), 82 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 14:54:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1326 transitions. [2023-12-24 14:54:34,689 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1326 transitions. Word has length 138 [2023-12-24 14:54:34,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:54:34,689 INFO L495 AbstractCegarLoop]: Abstraction has 1033 states and 1326 transitions. [2023-12-24 14:54:34,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 14:54:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1326 transitions. [2023-12-24 14:54:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 14:54:34,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:54:34,690 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, 1] [2023-12-24 14:54:34,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-24 14:54:34,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:54:34,895 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:54:34,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:54:34,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1435813800, now seen corresponding path program 1 times [2023-12-24 14:54:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:54:34,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747271219] [2023-12-24 14:54:34,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:54:34,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:54:34,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:54:34,897 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:54:34,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 14:54:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:54:35,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 14:54:35,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:54:41,198 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:54:41,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 128 [2023-12-24 14:54:41,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2023-12-24 14:54:41,376 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 14:54:41,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:54:41,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:54:41,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747271219] [2023-12-24 14:54:41,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747271219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:54:41,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:54:41,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-24 14:54:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596994038] [2023-12-24 14:54:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:54:41,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 14:54:41,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:54:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 14:54:41,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=166, Unknown=1, NotChecked=0, Total=210 [2023-12-24 14:54:41,377 INFO L87 Difference]: Start difference. First operand 1033 states and 1326 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 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 14:55:16,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:55:41,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:55:45,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:55:59,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:03,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:07,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:11,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:16,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:30,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:34,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:38,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:42,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:47,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:51,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:55,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:59,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:56:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:56:59,801 INFO L93 Difference]: Finished difference Result 2210 states and 2824 transitions. [2023-12-24 14:56:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 14:56:59,801 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 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 139 [2023-12-24 14:56:59,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:56:59,804 INFO L225 Difference]: With dead ends: 2210 [2023-12-24 14:56:59,804 INFO L226 Difference]: Without dead ends: 1178 [2023-12-24 14:56:59,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 72.5s TimeCoverageRelationStatistics Valid=182, Invalid=561, Unknown=13, NotChecked=0, Total=756 [2023-12-24 14:56:59,806 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 395 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 2 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:56:59,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1007 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1069 Invalid, 16 Unknown, 0 Unchecked, 70.8s Time] [2023-12-24 14:56:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2023-12-24 14:56:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1044. [2023-12-24 14:56:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 927 states have (on average 1.250269687162891) internal successors, (1159), 936 states have internal predecessors, (1159), 91 states have call successors, (91), 25 states have call predecessors, (91), 25 states have return successors, (91), 82 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-24 14:56:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1341 transitions. [2023-12-24 14:56:59,990 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1341 transitions. Word has length 139 [2023-12-24 14:56:59,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:56:59,990 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1341 transitions. [2023-12-24 14:56:59,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 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 14:56:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1341 transitions. [2023-12-24 14:56:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 14:56:59,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:56:59,992 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, 1] [2023-12-24 14:56:59,996 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 14:57:00,196 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 14:57:00,197 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:57:00,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:57:00,197 INFO L85 PathProgramCache]: Analyzing trace with hash 555401097, now seen corresponding path program 1 times [2023-12-24 14:57:00,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:57:00,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762357191] [2023-12-24 14:57:00,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:57:00,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:57:00,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:57:00,199 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 14:57:00,200 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 14:57:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:57:00,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:57:00,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:57:00,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 14:57:00,754 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 14:57:00,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:57:00,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:57:00,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762357191] [2023-12-24 14:57:00,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762357191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:57:00,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:57:00,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:57:00,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803465750] [2023-12-24 14:57:00,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:57:00,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:57:00,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:57:00,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:57:00,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:57:00,756 INFO L87 Difference]: Start difference. First operand 1044 states and 1341 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 14:57:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:57:01,169 INFO L93 Difference]: Finished difference Result 1853 states and 2389 transitions. [2023-12-24 14:57:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:57:01,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 139 [2023-12-24 14:57:01,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:57:01,172 INFO L225 Difference]: With dead ends: 1853 [2023-12-24 14:57:01,172 INFO L226 Difference]: Without dead ends: 1161 [2023-12-24 14:57:01,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:57:01,173 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 55 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:57:01,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 611 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:57:01,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-12-24 14:57:01,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1026. [2023-12-24 14:57:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 909 states have (on average 1.2409240924092408) internal successors, (1128), 918 states have internal predecessors, (1128), 91 states have call successors, (91), 25 states have call predecessors, (91), 25 states have return successors, (91), 82 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-24 14:57:01,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1310 transitions. [2023-12-24 14:57:01,350 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1310 transitions. Word has length 139 [2023-12-24 14:57:01,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:57:01,351 INFO L495 AbstractCegarLoop]: Abstraction has 1026 states and 1310 transitions. [2023-12-24 14:57:01,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 14:57:01,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1310 transitions. [2023-12-24 14:57:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 14:57:01,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:57:01,352 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, 1, 1] [2023-12-24 14:57:01,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 14:57:01,557 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 14:57:01,557 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:57:01,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:57:01,558 INFO L85 PathProgramCache]: Analyzing trace with hash -535845215, now seen corresponding path program 1 times [2023-12-24 14:57:01,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:57:01,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144115146] [2023-12-24 14:57:01,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:57:01,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:57:01,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:57:01,559 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:57:01,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 14:57:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:57:01,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 14:57:01,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:57:02,594 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 41 treesize of output 29 [2023-12-24 14:57:02,678 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 14:57:02,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:57:02,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:57:02,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144115146] [2023-12-24 14:57:02,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144115146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:57:02,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:57:02,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 14:57:02,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680595445] [2023-12-24 14:57:02,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:57:02,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 14:57:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:57:02,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 14:57:02,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:57:02,680 INFO L87 Difference]: Start difference. First operand 1026 states and 1310 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 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 14:57:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:57:06,796 INFO L93 Difference]: Finished difference Result 2184 states and 2774 transitions. [2023-12-24 14:57:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 14:57:06,796 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 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 140 [2023-12-24 14:57:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:57:06,799 INFO L225 Difference]: With dead ends: 2184 [2023-12-24 14:57:06,799 INFO L226 Difference]: Without dead ends: 1159 [2023-12-24 14:57:06,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2023-12-24 14:57:06,801 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 395 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:57:06,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 851 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 14:57:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2023-12-24 14:57:06,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1016. [2023-12-24 14:57:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 904 states have (on average 1.2400442477876106) internal successors, (1121), 912 states have internal predecessors, (1121), 87 states have call successors, (87), 24 states have call predecessors, (87), 24 states have return successors, (87), 79 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-24 14:57:06,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1295 transitions. [2023-12-24 14:57:06,993 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1295 transitions. Word has length 140 [2023-12-24 14:57:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:57:06,993 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1295 transitions. [2023-12-24 14:57:06,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 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 14:57:06,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1295 transitions. [2023-12-24 14:57:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 14:57:06,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:57:06,995 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, 1, 1] [2023-12-24 14:57:07,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 14:57:07,199 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 14:57:07,200 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:57:07,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:57:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash -687499345, now seen corresponding path program 1 times [2023-12-24 14:57:07,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:57:07,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076804343] [2023-12-24 14:57:07,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:57:07,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:57:07,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:57:07,202 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 14:57:07,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 14:57:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:57:07,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:57:07,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:57:07,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 14:57:07,758 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 14:57:07,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:57:07,887 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 14:57:07,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:57:07,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076804343] [2023-12-24 14:57:07,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076804343] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:57:07,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:57:07,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 14:57:07,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975663839] [2023-12-24 14:57:07,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:57:07,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:57:07,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:57:07,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:57:07,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:57:07,889 INFO L87 Difference]: Start difference. First operand 1016 states and 1295 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (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 14:57:08,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:57:08,169 INFO L93 Difference]: Finished difference Result 2070 states and 2665 transitions. [2023-12-24 14:57:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:57:08,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (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 140 [2023-12-24 14:57:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:57:08,173 INFO L225 Difference]: With dead ends: 2070 [2023-12-24 14:57:08,173 INFO L226 Difference]: Without dead ends: 1396 [2023-12-24 14:57:08,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:57:08,174 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 77 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:57:08,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 586 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:57:08,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2023-12-24 14:57:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1115. [2023-12-24 14:57:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1003 states have (on average 1.2452642073778664) internal successors, (1249), 1011 states have internal predecessors, (1249), 87 states have call successors, (87), 24 states have call predecessors, (87), 24 states have return successors, (87), 79 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-24 14:57:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1423 transitions. [2023-12-24 14:57:08,345 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1423 transitions. Word has length 140 [2023-12-24 14:57:08,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:57:08,345 INFO L495 AbstractCegarLoop]: Abstraction has 1115 states and 1423 transitions. [2023-12-24 14:57:08,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (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 14:57:08,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1423 transitions. [2023-12-24 14:57:08,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 14:57:08,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:57:08,347 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, 1, 1] [2023-12-24 14:57:08,351 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 14:57:08,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:57:08,553 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:57:08,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:57:08,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1367557715, now seen corresponding path program 1 times [2023-12-24 14:57:08,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:57:08,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84381956] [2023-12-24 14:57:08,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:57:08,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:57:08,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:57:08,555 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:57:08,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 14:57:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:57:08,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 14:57:08,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:57:09,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-24 14:57:09,252 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 66 treesize of output 50 [2023-12-24 14:57:09,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2023-12-24 14:57:09,324 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 7 proven. 341 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 14:57:09,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:57:09,484 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 14:57:09,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:57:09,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84381956] [2023-12-24 14:57:09,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84381956] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:57:09,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:57:09,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 17 [2023-12-24 14:57:09,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053454759] [2023-12-24 14:57:09,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:57:09,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:57:09,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:57:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:57:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-12-24 14:57:09,485 INFO L87 Difference]: Start difference. First operand 1115 states and 1423 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 14:57:10,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:57:10,307 INFO L93 Difference]: Finished difference Result 2739 states and 3514 transitions. [2023-12-24 14:57:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 14:57:10,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 140 [2023-12-24 14:57:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:57:10,313 INFO L225 Difference]: With dead ends: 2739 [2023-12-24 14:57:10,313 INFO L226 Difference]: Without dead ends: 1625 [2023-12-24 14:57:10,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2023-12-24 14:57:10,314 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 210 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:57:10,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1132 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:57:10,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2023-12-24 14:57:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1111. [2023-12-24 14:57:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 999 states have (on average 1.2422422422422423) internal successors, (1241), 1007 states have internal predecessors, (1241), 87 states have call successors, (87), 24 states have call predecessors, (87), 24 states have return successors, (87), 79 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-24 14:57:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1415 transitions. [2023-12-24 14:57:10,489 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1415 transitions. Word has length 140 [2023-12-24 14:57:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:57:10,489 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1415 transitions. [2023-12-24 14:57:10,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 14:57:10,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1415 transitions. [2023-12-24 14:57:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 14:57:10,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:57:10,490 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, 1, 1] [2023-12-24 14:57:10,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-24 14:57:10,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:57:10,695 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:57:10,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:57:10,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1148702997, now seen corresponding path program 1 times [2023-12-24 14:57:10,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:57:10,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445799782] [2023-12-24 14:57:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:57:10,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:57:10,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:57:10,696 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 14:57:10,697 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 14:57:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:57:10,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:57:10,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:57:11,279 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 14:57:11,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:57:11,374 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 14:57:11,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:57:11,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445799782] [2023-12-24 14:57:11,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445799782] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:57:11,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:57:11,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 14:57:11,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104541387] [2023-12-24 14:57:11,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:57:11,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:57:11,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:57:11,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:57:11,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 14:57:11,375 INFO L87 Difference]: Start difference. First operand 1111 states and 1415 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (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 14:57:11,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:57:11,640 INFO L93 Difference]: Finished difference Result 2358 states and 3005 transitions. [2023-12-24 14:57:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:57:11,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (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 140 [2023-12-24 14:57:11,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:57:11,646 INFO L225 Difference]: With dead ends: 2358 [2023-12-24 14:57:11,646 INFO L226 Difference]: Without dead ends: 1248 [2023-12-24 14:57:11,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 269 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 14:57:11,648 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 57 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:57:11,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 557 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:57:11,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2023-12-24 14:57:11,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1074. [2023-12-24 14:57:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 962 states have (on average 1.237006237006237) internal successors, (1190), 970 states have internal predecessors, (1190), 87 states have call successors, (87), 24 states have call predecessors, (87), 24 states have return successors, (87), 79 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-24 14:57:11,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1364 transitions. [2023-12-24 14:57:11,853 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1364 transitions. Word has length 140 [2023-12-24 14:57:11,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:57:11,854 INFO L495 AbstractCegarLoop]: Abstraction has 1074 states and 1364 transitions. [2023-12-24 14:57:11,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (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 14:57:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1364 transitions. [2023-12-24 14:57:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 14:57:11,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:57:11,855 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, 1, 1] [2023-12-24 14:57:11,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 14:57:12,055 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 14:57:12,056 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:57:12,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:57:12,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1725001876, now seen corresponding path program 1 times [2023-12-24 14:57:12,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:57:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414070986] [2023-12-24 14:57:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:57:12,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:57:12,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:57:12,058 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:57:12,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 14:57:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:57:12,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 14:57:12,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:57:12,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:57:12,357 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 41 treesize of output 37 [2023-12-24 14:57:12,362 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 25 treesize of output 17 [2023-12-24 14:57:12,397 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 14:57:12,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:57:12,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:57:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414070986] [2023-12-24 14:57:12,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414070986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:57:12,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:57:12,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:57:12,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953027136] [2023-12-24 14:57:12,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:57:12,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:57:12,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:57:12,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:57:12,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:57:12,399 INFO L87 Difference]: Start difference. First operand 1074 states and 1364 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (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 14:57:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:57:13,178 INFO L93 Difference]: Finished difference Result 2345 states and 2984 transitions. [2023-12-24 14:57:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:57:13,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (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 140 [2023-12-24 14:57:13,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:57:13,183 INFO L225 Difference]: With dead ends: 2345 [2023-12-24 14:57:13,183 INFO L226 Difference]: Without dead ends: 1272 [2023-12-24 14:57:13,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:57:13,185 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 106 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:57:13,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 507 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 14:57:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2023-12-24 14:57:13,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 887. [2023-12-24 14:57:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 811 states have (on average 1.2281134401972873) internal successors, (996), 815 states have internal predecessors, (996), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (57), 53 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-24 14:57:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1110 transitions. [2023-12-24 14:57:13,331 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1110 transitions. Word has length 140 [2023-12-24 14:57:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:57:13,331 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1110 transitions. [2023-12-24 14:57:13,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (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 14:57:13,331 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1110 transitions. [2023-12-24 14:57:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 14:57:13,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:57:13,332 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, 1, 1, 1, 1] [2023-12-24 14:57:13,337 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 (30)] Ended with exit code 0 [2023-12-24 14:57:13,532 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 14:57:13,535 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:57:13,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:57:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1940564973, now seen corresponding path program 1 times [2023-12-24 14:57:13,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:57:13,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825111441] [2023-12-24 14:57:13,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:57:13,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:57:13,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:57:13,537 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 14:57:13,538 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 14:57:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:57:13,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-24 14:57:13,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:57:19,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:57:20,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:57:21,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 14:57:23,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 59 [2023-12-24 14:57:24,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 14:57:25,747 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 40 treesize of output 43 [2023-12-24 14:57:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 38 proven. 366 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-24 14:57:31,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:57:34,724 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 14:57:34,724 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 283 treesize of output 226 [2023-12-24 14:57:48,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:57:48,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825111441] [2023-12-24 14:57:48,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825111441] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:57:48,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [948438460] [2023-12-24 14:57:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:57:48,812 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:57:48,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:57:48,813 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:57:48,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-24 14:57:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:57:52,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-24 14:57:52,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:57:55,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:57:59,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 14:58:06,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:58:08,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 14:58:12,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-12-24 14:58:19,802 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 86 treesize of output 67 [2023-12-24 14:58:24,332 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 69 treesize of output 55 [2023-12-24 14:58:36,297 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 40 treesize of output 28 [2023-12-24 14:58:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 180 proven. 375 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-24 14:58:40,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:59:28,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [948438460] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:59:28,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:59:28,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 56] total 90 [2023-12-24 14:59:28,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602051426] [2023-12-24 14:59:28,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:59:28,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-12-24 14:59:28,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:59:28,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-12-24 14:59:28,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2743, Invalid=15346, Unknown=1, NotChecked=0, Total=18090 [2023-12-24 14:59:28,663 INFO L87 Difference]: Start difference. First operand 887 states and 1110 transitions. Second operand has 91 states, 82 states have (on average 1.8170731707317074) internal successors, (149), 81 states have internal predecessors, (149), 17 states have call successors, (36), 14 states have call predecessors, (36), 17 states have return successors, (36), 15 states have call predecessors, (36), 17 states have call successors, (36) [2023-12-24 15:00:16,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-24 15:01:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-12-24 15:01:50,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21030 ImplicationChecksByTransitivity, 209.8s TimeCoverageRelationStatistics Valid=11038, Invalid=58393, Unknown=1, NotChecked=0, Total=69432 [2023-12-24 15:01:50,091 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2216 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 5499 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 5814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 5499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:01:50,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2216 Valid, 2361 Invalid, 5814 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [315 Valid, 5499 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2023-12-24 15:01:50,092 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 15:01:50,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 15:01:50,106 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 15:01:50,106 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 (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 15:01:50,111 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 15:01:50,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2023-12-24 15:01:50,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:01:50,499 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (887states) and FLOYD_HOARE automaton (currently 131 states, 91 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 264 known predicates. [2023-12-24 15:01:50,503 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:01:50,505 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 15:01:50,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 03:01:50 BoogieIcfgContainer [2023-12-24 15:01:50,506 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 15:01:50,506 INFO L158 Benchmark]: Toolchain (without parser) took 863556.21ms. Allocated memory was 234.9MB in the beginning and 664.8MB in the end (delta: 429.9MB). Free memory was 188.7MB in the beginning and 363.8MB in the end (delta: -175.1MB). Peak memory consumption was 255.8MB. Max. memory is 8.0GB. [2023-12-24 15:01:50,507 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 234.9MB. Free memory is still 192.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 15:01:50,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.25ms. Allocated memory is still 234.9MB. Free memory was 188.7MB in the beginning and 172.4MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 15:01:50,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.72ms. Allocated memory is still 234.9MB. Free memory was 172.4MB in the beginning and 169.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 15:01:50,507 INFO L158 Benchmark]: Boogie Preprocessor took 90.13ms. Allocated memory is still 234.9MB. Free memory was 169.3MB in the beginning and 164.6MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 15:01:50,507 INFO L158 Benchmark]: RCFGBuilder took 763.21ms. Allocated memory is still 234.9MB. Free memory was 164.1MB in the beginning and 205.0MB in the end (delta: -40.9MB). Peak memory consumption was 48.7MB. Max. memory is 8.0GB. [2023-12-24 15:01:50,507 INFO L158 Benchmark]: TraceAbstraction took 862386.44ms. Allocated memory was 234.9MB in the beginning and 664.8MB in the end (delta: 429.9MB). Free memory was 204.5MB in the beginning and 363.8MB in the end (delta: -159.3MB). Peak memory consumption was 271.1MB. Max. memory is 8.0GB. [2023-12-24 15:01:50,508 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 234.9MB. Free memory is still 192.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 252.25ms. Allocated memory is still 234.9MB. Free memory was 188.7MB in the beginning and 172.4MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.72ms. Allocated memory is still 234.9MB. Free memory was 172.4MB in the beginning and 169.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 90.13ms. Allocated memory is still 234.9MB. Free memory was 169.3MB in the beginning and 164.6MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 763.21ms. Allocated memory is still 234.9MB. Free memory was 164.1MB in the beginning and 205.0MB in the end (delta: -40.9MB). Peak memory consumption was 48.7MB. Max. memory is 8.0GB. * TraceAbstraction took 862386.44ms. Allocated memory was 234.9MB in the beginning and 664.8MB in the end (delta: 429.9MB). Free memory was 204.5MB in the beginning and 363.8MB in the end (delta: -159.3MB). Peak memory consumption was 271.1MB. 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 constructing difference of abstraction (887states) and FLOYD_HOARE automaton (currently 131 states, 91 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 264 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 862.3s, OverallIterations: 24, TraceHistogramMax: 18, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 513.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 mSolverCounterUnknown, 16094 SdHoareTripleChecker+Valid, 183.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16090 mSDsluCounter, 36092 SdHoareTripleChecker+Invalid, 176.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32578 mSDsCounter, 3531 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39808 IncrementalHoareTripleChecker+Invalid, 43355 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3531 mSolverCounterUnsat, 3514 mSDtfsCounter, 39808 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6132 GetRequests, 4715 SyntacticMatches, 1 SemanticMatches, 1415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65715 ImplicationChecksByTransitivity, 548.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1115occurred in iteration=20, InterpolantAutomatonStates: 712, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 23 MinimizatonAttempts, 6763 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 6.8s SatisfiabilityAnalysisTime, 329.4s InterpolantComputationTime, 4216 NumberOfCodeBlocks, 4216 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 5002 ConstructedInterpolants, 739 QuantifiedInterpolants, 116249 SizeOfPredicates, 726 NumberOfNonLiveVariables, 9370 ConjunctsInSsa, 972 ConjunctsInUnsatCore, 37 InterpolantComputations, 17 PerfectInterpolantSequences, 18252/22644 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