/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-18.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 15:45:31,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 15:45:31,976 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 15:45:31,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 15:45:31,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 15:45:31,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 15:45:31,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 15:45:31,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 15:45:31,994 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 15:45:31,994 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 15:45:31,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 15:45:31,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 15:45:31,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 15:45:31,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 15:45:31,996 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 15:45:31,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 15:45:31,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 15:45:31,996 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 15:45:31,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 15:45:31,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 15:45:31,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 15:45:31,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 15:45:31,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 15:45:31,998 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 15:45:31,998 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 15:45:31,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 15:45:31,998 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 15:45:31,998 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 15:45:31,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 15:45:31,999 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 15:45:31,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 15:45:31,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 15:45:31,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 15:45:31,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 15:45:31,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:45:32,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 15:45:32,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 15:45:32,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 15:45:32,000 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 15:45:32,000 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:32,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 15:45:32,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 15:45:32,001 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 15:45:32,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 15:45:32,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 15:45:32,001 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 15:45:32,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 15:45:32,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 15:45:32,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 15:45:32,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 15:45:32,186 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 15:45:32,187 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 15:45:32,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-18.i [2023-12-16 15:45:33,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 15:45:33,421 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 15:45:33,421 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-18.i [2023-12-16 15:45:33,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6aed43e/2541dec1c98e4d47bfdbe34013fcf71c/FLAGb468704f5 [2023-12-16 15:45:33,441 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6aed43e/2541dec1c98e4d47bfdbe34013fcf71c [2023-12-16 15:45:33,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 15:45:33,443 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 15:45:33,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 15:45:33,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 15:45:33,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 15:45:33,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663f8d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33, skipping insertion in model container [2023-12-16 15:45:33,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,478 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 15:45:33,569 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-18.i[916,929] [2023-12-16 15:45:33,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:45:33,613 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 15:45:33,622 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-18.i[916,929] [2023-12-16 15:45:33,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:45:33,658 INFO L206 MainTranslator]: Completed translation [2023-12-16 15:45:33,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33 WrapperNode [2023-12-16 15:45:33,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 15:45:33,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 15:45:33,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 15:45:33,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 15:45:33,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,674 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,699 INFO L138 Inliner]: procedures = 36, calls = 148, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 460 [2023-12-16 15:45:33,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 15:45:33,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 15:45:33,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 15:45:33,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 15:45:33,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,713 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,728 INFO L175 MemorySlicer]: Split 115 memory accesses to 11 slices as follows [2, 5, 14, 8, 12, 12, 26, 12, 8, 10, 6]. 23 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 13 writes are split as follows [0, 2, 1, 1, 1, 1, 2, 1, 1, 2, 1]. [2023-12-16 15:45:33,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,752 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 15:45:33,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 15:45:33,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 15:45:33,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 15:45:33,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (1/1) ... [2023-12-16 15:45:33,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:45:33,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 15:45:33,782 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) [2023-12-16 15:45:33,787 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 [2023-12-16 15:45:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 15:45:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-16 15:45:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-16 15:45:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-16 15:45:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-16 15:45:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-16 15:45:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-16 15:45:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-16 15:45:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-16 15:45:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-16 15:45:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-16 15:45:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-16 15:45:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 15:45:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 15:45:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 15:45:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 15:45:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-16 15:45:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-16 15:45:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-16 15:45:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-16 15:45:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-16 15:45:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-16 15:45:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2023-12-16 15:45:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 15:45:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 15:45:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 15:45:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-16 15:45:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-16 15:45:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-16 15:45:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-16 15:45:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-16 15:45:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-16 15:45:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-16 15:45:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-16 15:45:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-16 15:45:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-16 15:45:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-16 15:45:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-16 15:45:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-16 15:45:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-16 15:45:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-16 15:45:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-16 15:45:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-16 15:45:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-16 15:45:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-16 15:45:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-16 15:45:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-16 15:45:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-16 15:45:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-16 15:45:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-16 15:45:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-16 15:45:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-16 15:45:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-16 15:45:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2023-12-16 15:45:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2023-12-16 15:45:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2023-12-16 15:45:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 15:45:33,816 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 15:45:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 15:45:33,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 15:45:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-16 15:45:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-16 15:45:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-16 15:45:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-16 15:45:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-16 15:45:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-16 15:45:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-16 15:45:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-16 15:45:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-16 15:45:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-16 15:45:33,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-16 15:45:33,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-16 15:45:33,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-16 15:45:33,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-16 15:45:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-16 15:45:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-16 15:45:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-16 15:45:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-16 15:45:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-16 15:45:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-16 15:45:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-16 15:45:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-16 15:45:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 15:45:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 15:45:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 15:45:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-16 15:45:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-16 15:45:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-16 15:45:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-16 15:45:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-16 15:45:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-16 15:45:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-16 15:45:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-16 15:45:33,984 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 15:45:33,985 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 15:45:34,787 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 15:45:34,852 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 15:45:34,852 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 15:45:34,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:45:34 BoogieIcfgContainer [2023-12-16 15:45:34,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 15:45:34,854 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 15:45:34,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 15:45:34,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 15:45:34,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:45:33" (1/3) ... [2023-12-16 15:45:34,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f40e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:45:34, skipping insertion in model container [2023-12-16 15:45:34,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:45:33" (2/3) ... [2023-12-16 15:45:34,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f40e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:45:34, skipping insertion in model container [2023-12-16 15:45:34,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:45:34" (3/3) ... [2023-12-16 15:45:34,858 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-18.i [2023-12-16 15:45:34,871 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 15:45:34,871 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 15:45:34,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 15:45:34,914 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;@833133a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 15:45:34,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 15:45:34,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 71 states have internal predecessors, (103), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 15:45:34,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-16 15:45:34,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:34,926 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:34,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:34,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash -139822009, now seen corresponding path program 1 times [2023-12-16 15:45:34,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:34,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457214729] [2023-12-16 15:45:34,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:34,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:34,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:34,943 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) [2023-12-16 15:45:34,976 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 [2023-12-16 15:45:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:35,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 15:45:35,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-16 15:45:35,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:35,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457214729] [2023-12-16 15:45:35,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457214729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:35,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:45:35,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 15:45:35,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645750891] [2023-12-16 15:45:35,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:35,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 15:45:35,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 15:45:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:45:35,354 INFO L87 Difference]: Start difference. First operand has 85 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 71 states have internal predecessors, (103), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-16 15:45:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:35,403 INFO L93 Difference]: Finished difference Result 167 states and 264 transitions. [2023-12-16 15:45:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 15:45:35,405 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2023-12-16 15:45:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:35,410 INFO L225 Difference]: With dead ends: 167 [2023-12-16 15:45:35,410 INFO L226 Difference]: Without dead ends: 83 [2023-12-16 15:45:35,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:45:35,416 INFO L413 NwaCegarLoop]: 118 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, 118 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 [2023-12-16 15:45:35,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:45:35,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-16 15:45:35,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-16 15:45:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 69 states have internal predecessors, (98), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 15:45:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 122 transitions. [2023-12-16 15:45:35,445 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 122 transitions. Word has length 98 [2023-12-16 15:45:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:35,445 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 122 transitions. [2023-12-16 15:45:35,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-16 15:45:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 122 transitions. [2023-12-16 15:45:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-16 15:45:35,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:35,448 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:35,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 15:45:35,651 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 [2023-12-16 15:45:35,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:35,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash -191323149, now seen corresponding path program 1 times [2023-12-16 15:45:35,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:35,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085134237] [2023-12-16 15:45:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:35,654 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 [2023-12-16 15:45:35,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:35,656 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) [2023-12-16 15:45:35,661 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 [2023-12-16 15:45:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:35,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 15:45:35,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:36,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-16 15:45:36,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-16 15:45:36,281 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 [2023-12-16 15:45:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:45:36,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:36,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:36,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085134237] [2023-12-16 15:45:36,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085134237] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:36,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [971925125] [2023-12-16 15:45:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:36,433 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:36,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:45:36,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:45:36,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-16 15:45:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:36,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 15:45:36,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:37,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-12-16 15:45:37,728 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:45:37,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:37,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [971925125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:37,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:37,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-16 15:45:37,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813991922] [2023-12-16 15:45:37,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:37,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:45:37,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:37,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:45:37,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-16 15:45:37,731 INFO L87 Difference]: Start difference. First operand 83 states and 122 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:37,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:37,922 INFO L93 Difference]: Finished difference Result 249 states and 367 transitions. [2023-12-16 15:45:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:45:37,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 98 [2023-12-16 15:45:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:37,924 INFO L225 Difference]: With dead ends: 249 [2023-12-16 15:45:37,924 INFO L226 Difference]: Without dead ends: 167 [2023-12-16 15:45:37,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-16 15:45:37,925 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 71 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:37,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 390 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:45:37,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-16 15:45:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2023-12-16 15:45:37,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 135 states have (on average 1.4148148148148147) internal successors, (191), 135 states have internal predecessors, (191), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-16 15:45:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 239 transitions. [2023-12-16 15:45:37,941 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 239 transitions. Word has length 98 [2023-12-16 15:45:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:37,941 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 239 transitions. [2023-12-16 15:45:37,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 239 transitions. [2023-12-16 15:45:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-16 15:45:37,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:37,943 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:37,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:38,158 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 [2023-12-16 15:45:38,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-16 15:45:38,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:38,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1202440399, now seen corresponding path program 1 times [2023-12-16 15:45:38,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:38,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618369650] [2023-12-16 15:45:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:38,365 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 [2023-12-16 15:45:38,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:38,367 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) [2023-12-16 15:45:38,368 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 [2023-12-16 15:45:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:38,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 15:45:38,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:39,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-16 15:45:39,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-16 15:45:39,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-16 15:45:39,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-16 15:45:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:45:39,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:39,710 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:45:39,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-16 15:45:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-16 15:45:39,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:39,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618369650] [2023-12-16 15:45:39,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618369650] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:45:39,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:45:39,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-12-16 15:45:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508869139] [2023-12-16 15:45:39,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:45:39,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 15:45:39,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:39,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 15:45:39,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2023-12-16 15:45:39,789 INFO L87 Difference]: Start difference. First operand 162 states and 239 transitions. Second operand has 21 states, 19 states have (on average 4.052631578947368) internal successors, (77), 20 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-16 15:45:44,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:44,181 INFO L93 Difference]: Finished difference Result 640 states and 930 transitions. [2023-12-16 15:45:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-16 15:45:44,182 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.052631578947368) internal successors, (77), 20 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) Word has length 98 [2023-12-16 15:45:44,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:44,188 INFO L225 Difference]: With dead ends: 640 [2023-12-16 15:45:44,188 INFO L226 Difference]: Without dead ends: 479 [2023-12-16 15:45:44,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1031, Invalid=2509, Unknown=0, NotChecked=0, Total=3540 [2023-12-16 15:45:44,198 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1471 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:44,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 1497 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 15:45:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-12-16 15:45:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 415. [2023-12-16 15:45:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 345 states have (on average 1.4) internal successors, (483), 345 states have internal predecessors, (483), 60 states have call successors, (60), 9 states have call predecessors, (60), 9 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:45:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 603 transitions. [2023-12-16 15:45:44,236 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 603 transitions. Word has length 98 [2023-12-16 15:45:44,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:44,237 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 603 transitions. [2023-12-16 15:45:44,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.052631578947368) internal successors, (77), 20 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-16 15:45:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 603 transitions. [2023-12-16 15:45:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 15:45:44,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:44,240 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:44,247 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 [2023-12-16 15:45:44,444 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 [2023-12-16 15:45:44,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:44,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash 736813840, now seen corresponding path program 1 times [2023-12-16 15:45:44,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:44,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035671503] [2023-12-16 15:45:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:44,445 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 [2023-12-16 15:45:44,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:44,449 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) [2023-12-16 15:45:44,484 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 [2023-12-16 15:45:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:44,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 15:45:44,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:44,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-12-16 15:45:44,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-12-16 15:45:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:45:44,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:44,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:44,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035671503] [2023-12-16 15:45:44,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035671503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:44,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:45:44,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 15:45:44,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77398793] [2023-12-16 15:45:44,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:44,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 15:45:44,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:44,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 15:45:44,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-16 15:45:44,960 INFO L87 Difference]: Start difference. First operand 415 states and 603 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:45,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:45,742 INFO L93 Difference]: Finished difference Result 1116 states and 1626 transitions. [2023-12-16 15:45:45,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 15:45:45,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 99 [2023-12-16 15:45:45,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:45,745 INFO L225 Difference]: With dead ends: 1116 [2023-12-16 15:45:45,745 INFO L226 Difference]: Without dead ends: 702 [2023-12-16 15:45:45,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-16 15:45:45,746 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 227 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:45,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 714 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 15:45:45,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-12-16 15:45:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 504. [2023-12-16 15:45:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 421 states have (on average 1.3942992874109263) internal successors, (587), 421 states have internal predecessors, (587), 72 states have call successors, (72), 10 states have call predecessors, (72), 10 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 15:45:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 731 transitions. [2023-12-16 15:45:45,785 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 731 transitions. Word has length 99 [2023-12-16 15:45:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:45,785 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 731 transitions. [2023-12-16 15:45:45,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:45,786 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 731 transitions. [2023-12-16 15:45:45,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 15:45:45,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:45,787 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:45,793 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 [2023-12-16 15:45:45,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:45,993 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:45,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:45,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1129840850, now seen corresponding path program 1 times [2023-12-16 15:45:45,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:45,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995236401] [2023-12-16 15:45:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:45,994 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 [2023-12-16 15:45:45,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:45,995 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:45:46,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 15:45:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:46,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 15:45:46,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:46,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-16 15:45:46,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-16 15:45:46,504 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 [2023-12-16 15:45:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:45:46,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:46,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:46,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995236401] [2023-12-16 15:45:46,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995236401] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:46,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1282046236] [2023-12-16 15:45:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:46,629 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:46,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:45:46,630 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:45:46,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-16 15:45:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:47,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 15:45:47,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:47,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-12-16 15:45:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:45:47,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:47,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1282046236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:47,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:47,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-16 15:45:47,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471174819] [2023-12-16 15:45:47,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:47,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:45:47,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:47,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:45:47,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-16 15:45:47,710 INFO L87 Difference]: Start difference. First operand 504 states and 731 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:47,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:47,898 INFO L93 Difference]: Finished difference Result 1049 states and 1522 transitions. [2023-12-16 15:45:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:45:47,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 99 [2023-12-16 15:45:47,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:47,901 INFO L225 Difference]: With dead ends: 1049 [2023-12-16 15:45:47,901 INFO L226 Difference]: Without dead ends: 546 [2023-12-16 15:45:47,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-12-16 15:45:47,902 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 122 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:47,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 501 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:45:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2023-12-16 15:45:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 500. [2023-12-16 15:45:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 417 states have (on average 1.3932853717026379) internal successors, (581), 417 states have internal predecessors, (581), 72 states have call successors, (72), 10 states have call predecessors, (72), 10 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 15:45:47,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 725 transitions. [2023-12-16 15:45:47,925 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 725 transitions. Word has length 99 [2023-12-16 15:45:47,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:47,925 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 725 transitions. [2023-12-16 15:45:47,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 725 transitions. [2023-12-16 15:45:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 15:45:47,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:47,926 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:47,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:48,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:48,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:48,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:48,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:48,333 INFO L85 PathProgramCache]: Analyzing trace with hash 745924400, now seen corresponding path program 1 times [2023-12-16 15:45:48,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:48,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293336191] [2023-12-16 15:45:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:48,334 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 [2023-12-16 15:45:48,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:48,335 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) [2023-12-16 15:45:48,335 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 [2023-12-16 15:45:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:48,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 15:45:48,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:48,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-16 15:45:48,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-16 15:45:48,729 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 [2023-12-16 15:45:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:45:48,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:48,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:48,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293336191] [2023-12-16 15:45:48,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293336191] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:48,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [588541347] [2023-12-16 15:45:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:48,839 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:48,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:45:48,840 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) [2023-12-16 15:45:48,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-16 15:45:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:49,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 15:45:49,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:49,338 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 [2023-12-16 15:45:50,095 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 [2023-12-16 15:45:50,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-16 15:45:50,114 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 17 treesize of output 9 [2023-12-16 15:45:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:45:50,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:50,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [588541347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:50,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:45:50,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-16 15:45:50,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726339994] [2023-12-16 15:45:50,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:45:50,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 15:45:50,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:50,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 15:45:50,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-16 15:45:50,137 INFO L87 Difference]: Start difference. First operand 500 states and 725 transitions. Second operand has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-16 15:45:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:51,761 INFO L93 Difference]: Finished difference Result 946 states and 1359 transitions. [2023-12-16 15:45:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 15:45:51,762 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) Word has length 99 [2023-12-16 15:45:51,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:51,764 INFO L225 Difference]: With dead ends: 946 [2023-12-16 15:45:51,764 INFO L226 Difference]: Without dead ends: 612 [2023-12-16 15:45:51,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 15:45:51,765 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 753 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:51,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 950 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 15:45:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2023-12-16 15:45:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 594. [2023-12-16 15:45:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 495 states have (on average 1.3777777777777778) internal successors, (682), 495 states have internal predecessors, (682), 84 states have call successors, (84), 14 states have call predecessors, (84), 14 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-16 15:45:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 850 transitions. [2023-12-16 15:45:51,800 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 850 transitions. Word has length 99 [2023-12-16 15:45:51,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:51,800 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 850 transitions. [2023-12-16 15:45:51,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-16 15:45:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 850 transitions. [2023-12-16 15:45:51,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 15:45:51,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:51,801 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:51,813 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 [2023-12-16 15:45:52,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-16 15:45:52,212 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 [2023-12-16 15:45:52,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:52,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:52,213 INFO L85 PathProgramCache]: Analyzing trace with hash 119743797, now seen corresponding path program 1 times [2023-12-16 15:45:52,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:52,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5099063] [2023-12-16 15:45:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:52,214 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 [2023-12-16 15:45:52,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:52,215 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) [2023-12-16 15:45:52,237 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 [2023-12-16 15:45:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:52,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 15:45:52,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:52,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-16 15:45:52,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-16 15:45:52,644 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 [2023-12-16 15:45:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:45:52,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:52,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5099063] [2023-12-16 15:45:52,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5099063] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1995914549] [2023-12-16 15:45:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:52,755 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:52,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:45:52,756 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) [2023-12-16 15:45:52,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-16 15:45:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:53,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 15:45:53,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:53,297 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 [2023-12-16 15:45:54,047 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 [2023-12-16 15:45:54,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-16 15:45:54,090 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 [2023-12-16 15:45:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:45:54,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1995914549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:54,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:45:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-16 15:45:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668114555] [2023-12-16 15:45:54,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:45:54,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 15:45:54,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:54,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 15:45:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-16 15:45:54,124 INFO L87 Difference]: Start difference. First operand 594 states and 850 transitions. Second operand has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-16 15:45:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:55,842 INFO L93 Difference]: Finished difference Result 942 states and 1338 transitions. [2023-12-16 15:45:55,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 15:45:55,852 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) Word has length 100 [2023-12-16 15:45:55,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:55,857 INFO L225 Difference]: With dead ends: 942 [2023-12-16 15:45:55,857 INFO L226 Difference]: Without dead ends: 606 [2023-12-16 15:45:55,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 15:45:55,858 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 506 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:55,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1077 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 15:45:55,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-12-16 15:45:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 590. [2023-12-16 15:45:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 491 states have (on average 1.3686354378818737) internal successors, (672), 491 states have internal predecessors, (672), 84 states have call successors, (84), 14 states have call predecessors, (84), 14 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-16 15:45:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 840 transitions. [2023-12-16 15:45:55,898 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 840 transitions. Word has length 100 [2023-12-16 15:45:55,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:55,899 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 840 transitions. [2023-12-16 15:45:55,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-16 15:45:55,899 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 840 transitions. [2023-12-16 15:45:55,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 15:45:55,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:55,900 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:55,908 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 [2023-12-16 15:45:56,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:56,308 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 [2023-12-16 15:45:56,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:56,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:56,309 INFO L85 PathProgramCache]: Analyzing trace with hash -153031810, now seen corresponding path program 1 times [2023-12-16 15:45:56,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:56,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647688785] [2023-12-16 15:45:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:56,309 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 [2023-12-16 15:45:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:56,311 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) [2023-12-16 15:45:56,312 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 [2023-12-16 15:45:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:56,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:45:56,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:45:56,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:56,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:56,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647688785] [2023-12-16 15:45:56,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647688785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:56,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:45:56,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:45:56,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585064646] [2023-12-16 15:45:56,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:56,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:45:56,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:45:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:45:56,585 INFO L87 Difference]: Start difference. First operand 590 states and 840 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:56,678 INFO L93 Difference]: Finished difference Result 1298 states and 1854 transitions. [2023-12-16 15:45:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:45:56,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101 [2023-12-16 15:45:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:56,681 INFO L225 Difference]: With dead ends: 1298 [2023-12-16 15:45:56,681 INFO L226 Difference]: Without dead ends: 709 [2023-12-16 15:45:56,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:45:56,683 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 62 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:56,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 467 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:45:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2023-12-16 15:45:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 611. [2023-12-16 15:45:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 512 states have (on average 1.353515625) internal successors, (693), 512 states have internal predecessors, (693), 84 states have call successors, (84), 14 states have call predecessors, (84), 14 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-16 15:45:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 861 transitions. [2023-12-16 15:45:56,722 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 861 transitions. Word has length 101 [2023-12-16 15:45:56,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:56,723 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 861 transitions. [2023-12-16 15:45:56,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 861 transitions. [2023-12-16 15:45:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 15:45:56,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:56,724 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:56,746 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 [2023-12-16 15:45:56,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:56,927 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:56,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:56,927 INFO L85 PathProgramCache]: Analyzing trace with hash -991465640, now seen corresponding path program 1 times [2023-12-16 15:45:56,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:56,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255814090] [2023-12-16 15:45:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:56,928 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 [2023-12-16 15:45:56,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:56,929 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:45:56,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 15:45:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:57,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 15:45:57,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:45:57,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:57,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:57,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255814090] [2023-12-16 15:45:57,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255814090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:57,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:45:57,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 15:45:57,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217926511] [2023-12-16 15:45:57,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:57,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:45:57,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:45:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 15:45:57,341 INFO L87 Difference]: Start difference. First operand 611 states and 861 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:57,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:57,587 INFO L93 Difference]: Finished difference Result 1219 states and 1716 transitions. [2023-12-16 15:45:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 15:45:57,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101 [2023-12-16 15:45:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:57,589 INFO L225 Difference]: With dead ends: 1219 [2023-12-16 15:45:57,590 INFO L226 Difference]: Without dead ends: 609 [2023-12-16 15:45:57,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:45:57,591 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 66 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:57,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 381 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:45:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-12-16 15:45:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 607. [2023-12-16 15:45:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 508 states have (on average 1.3464566929133859) internal successors, (684), 508 states have internal predecessors, (684), 84 states have call successors, (84), 14 states have call predecessors, (84), 14 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-16 15:45:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 852 transitions. [2023-12-16 15:45:57,626 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 852 transitions. Word has length 101 [2023-12-16 15:45:57,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:57,626 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 852 transitions. [2023-12-16 15:45:57,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 852 transitions. [2023-12-16 15:45:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 15:45:57,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:57,627 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:57,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:57,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:57,831 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:57,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:57,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1498675313, now seen corresponding path program 1 times [2023-12-16 15:45:57,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:57,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055428658] [2023-12-16 15:45:57,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:57,832 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 [2023-12-16 15:45:57,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:57,833 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) [2023-12-16 15:45:57,834 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 [2023-12-16 15:45:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:58,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 15:45:58,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:45:58,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:58,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:58,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055428658] [2023-12-16 15:45:58,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055428658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:58,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:45:58,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 15:45:58,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170132257] [2023-12-16 15:45:58,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:58,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:45:58,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:58,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:45:58,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 15:45:58,207 INFO L87 Difference]: Start difference. First operand 607 states and 852 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:58,519 INFO L93 Difference]: Finished difference Result 1211 states and 1698 transitions. [2023-12-16 15:45:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 15:45:58,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 102 [2023-12-16 15:45:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:58,522 INFO L225 Difference]: With dead ends: 1211 [2023-12-16 15:45:58,522 INFO L226 Difference]: Without dead ends: 605 [2023-12-16 15:45:58,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:45:58,523 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 90 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:58,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 385 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 15:45:58,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-12-16 15:45:58,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 345. [2023-12-16 15:45:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 288 states have (on average 1.3402777777777777) internal successors, (386), 288 states have internal predecessors, (386), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 15:45:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 482 transitions. [2023-12-16 15:45:58,563 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 482 transitions. Word has length 102 [2023-12-16 15:45:58,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:58,563 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 482 transitions. [2023-12-16 15:45:58,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:58,563 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 482 transitions. [2023-12-16 15:45:58,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-16 15:45:58,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:58,565 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:58,582 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 [2023-12-16 15:45:58,771 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 [2023-12-16 15:45:58,771 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:58,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash -97526573, now seen corresponding path program 1 times [2023-12-16 15:45:58,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:58,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069226703] [2023-12-16 15:45:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:58,772 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 [2023-12-16 15:45:58,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:58,773 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) [2023-12-16 15:45:58,775 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 [2023-12-16 15:45:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:59,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:45:59,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:45:59,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:59,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:59,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069226703] [2023-12-16 15:45:59,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069226703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:59,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:45:59,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:45:59,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477812678] [2023-12-16 15:45:59,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:59,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:45:59,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:59,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:45:59,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:45:59,041 INFO L87 Difference]: Start difference. First operand 345 states and 482 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:59,106 INFO L93 Difference]: Finished difference Result 725 states and 1015 transitions. [2023-12-16 15:45:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:45:59,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-12-16 15:45:59,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:59,114 INFO L225 Difference]: With dead ends: 725 [2023-12-16 15:45:59,114 INFO L226 Difference]: Without dead ends: 381 [2023-12-16 15:45:59,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:45:59,115 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 44 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 430 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 [2023-12-16 15:45:59,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 430 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:45:59,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-16 15:45:59,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 357. [2023-12-16 15:45:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 300 states have (on average 1.3266666666666667) internal successors, (398), 300 states have internal predecessors, (398), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 15:45:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 494 transitions. [2023-12-16 15:45:59,139 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 494 transitions. Word has length 103 [2023-12-16 15:45:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:59,139 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 494 transitions. [2023-12-16 15:45:59,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:45:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 494 transitions. [2023-12-16 15:45:59,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-16 15:45:59,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:59,140 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:59,162 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 [2023-12-16 15:45:59,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:59,346 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:59,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:59,346 INFO L85 PathProgramCache]: Analyzing trace with hash 439284377, now seen corresponding path program 1 times [2023-12-16 15:45:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:59,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681862618] [2023-12-16 15:45:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:59,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:59,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:59,348 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:45:59,350 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 [2023-12-16 15:45:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:59,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 15:45:59,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:59,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2023-12-16 15:45:59,704 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 [2023-12-16 15:45:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:45:59,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:59,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681862618] [2023-12-16 15:45:59,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681862618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:59,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:45:59,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 15:45:59,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203645326] [2023-12-16 15:45:59,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:59,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:45:59,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:59,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:45:59,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:45:59,739 INFO L87 Difference]: Start difference. First operand 357 states and 494 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:46:00,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:46:00,368 INFO L93 Difference]: Finished difference Result 799 states and 1099 transitions. [2023-12-16 15:46:00,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:46:00,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-12-16 15:46:00,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:46:00,371 INFO L225 Difference]: With dead ends: 799 [2023-12-16 15:46:00,371 INFO L226 Difference]: Without dead ends: 443 [2023-12-16 15:46:00,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:46:00,372 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 213 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 15:46:00,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 425 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 15:46:00,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-12-16 15:46:00,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2023-12-16 15:46:00,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 315 states have (on average 1.3111111111111111) internal successors, (413), 315 states have internal predecessors, (413), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 15:46:00,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 509 transitions. [2023-12-16 15:46:00,420 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 509 transitions. Word has length 103 [2023-12-16 15:46:00,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:46:00,420 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 509 transitions. [2023-12-16 15:46:00,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:46:00,420 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 509 transitions. [2023-12-16 15:46:00,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-16 15:46:00,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:46:00,421 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:46:00,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 15:46:00,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:46:00,637 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:46:00,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:46:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1654103771, now seen corresponding path program 1 times [2023-12-16 15:46:00,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:46:00,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968718028] [2023-12-16 15:46:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:46:00,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:46:00,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:46:00,639 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:46:00,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-16 15:46:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:46:00,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 15:46:00,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:46:01,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2023-12-16 15:46:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 14 proven. 132 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-12-16 15:46:01,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:46:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:46:01,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:46:01,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968718028] [2023-12-16 15:46:01,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968718028] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:46:01,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:46:01,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-16 15:46:01,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342259227] [2023-12-16 15:46:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:46:01,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:46:01,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:46:01,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:46:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:46:01,920 INFO L87 Difference]: Start difference. First operand 372 states and 509 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:46:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:46:02,760 INFO L93 Difference]: Finished difference Result 907 states and 1241 transitions. [2023-12-16 15:46:02,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:46:02,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105 [2023-12-16 15:46:02,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:46:02,762 INFO L225 Difference]: With dead ends: 907 [2023-12-16 15:46:02,762 INFO L226 Difference]: Without dead ends: 536 [2023-12-16 15:46:02,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-16 15:46:02,763 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 137 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 15:46:02,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 318 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 15:46:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-12-16 15:46:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 449. [2023-12-16 15:46:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 392 states have (on average 1.3035714285714286) internal successors, (511), 392 states have internal predecessors, (511), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 15:46:02,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 607 transitions. [2023-12-16 15:46:02,815 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 607 transitions. Word has length 105 [2023-12-16 15:46:02,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:46:02,815 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 607 transitions. [2023-12-16 15:46:02,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:46:02,815 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 607 transitions. [2023-12-16 15:46:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-16 15:46:02,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:46:02,816 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:46:02,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-16 15:46:03,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:46:03,022 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:46:03,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:46:03,022 INFO L85 PathProgramCache]: Analyzing trace with hash 88156583, now seen corresponding path program 1 times [2023-12-16 15:46:03,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:46:03,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268838900] [2023-12-16 15:46:03,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:46:03,023 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 [2023-12-16 15:46:03,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:46:03,024 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) [2023-12-16 15:46:03,058 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 [2023-12-16 15:46:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:46:03,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 15:46:03,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:46:03,330 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 [2023-12-16 15:46:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:46:03,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:46:03,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:46:03,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268838900] [2023-12-16 15:46:03,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268838900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:46:03,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:46:03,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 15:46:03,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593809362] [2023-12-16 15:46:03,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:46:03,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:46:03,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:46:03,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:46:03,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:46:03,395 INFO L87 Difference]: Start difference. First operand 449 states and 607 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:46:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:46:03,896 INFO L93 Difference]: Finished difference Result 698 states and 922 transitions. [2023-12-16 15:46:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:46:03,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105 [2023-12-16 15:46:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:46:03,899 INFO L225 Difference]: With dead ends: 698 [2023-12-16 15:46:03,899 INFO L226 Difference]: Without dead ends: 696 [2023-12-16 15:46:03,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:46:03,899 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 223 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:46:03,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 463 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 15:46:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-16 15:46:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 658. [2023-12-16 15:46:03,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 601 states have (on average 1.2845257903494176) internal successors, (772), 601 states have internal predecessors, (772), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 15:46:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 868 transitions. [2023-12-16 15:46:03,953 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 868 transitions. Word has length 105 [2023-12-16 15:46:03,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:46:03,953 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 868 transitions. [2023-12-16 15:46:03,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:46:03,954 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 868 transitions. [2023-12-16 15:46:03,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-16 15:46:03,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:46:03,954 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:46:03,963 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 [2023-12-16 15:46:04,161 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 [2023-12-16 15:46:04,162 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:46:04,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:46:04,162 INFO L85 PathProgramCache]: Analyzing trace with hash 889995710, now seen corresponding path program 1 times [2023-12-16 15:46:04,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:46:04,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73271800] [2023-12-16 15:46:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:46:04,163 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 [2023-12-16 15:46:04,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:46:04,163 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) [2023-12-16 15:46:04,201 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 [2023-12-16 15:46:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:46:04,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 15:46:04,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:46:04,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-16 15:46:04,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-16 15:46:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:46:04,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:46:05,201 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:46:05,212 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 31 treesize of output 30 [2023-12-16 15:46:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-16 15:46:05,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:46:05,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73271800] [2023-12-16 15:46:05,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73271800] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:46:05,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:46:05,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-16 15:46:05,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916679176] [2023-12-16 15:46:05,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:46:05,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 15:46:05,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:46:05,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 15:46:05,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-12-16 15:46:05,249 INFO L87 Difference]: Start difference. First operand 658 states and 868 transitions. Second operand has 17 states, 15 states have (on average 5.666666666666667) internal successors, (85), 16 states have internal predecessors, (85), 4 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-16 15:46:08,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:46:08,104 INFO L93 Difference]: Finished difference Result 1263 states and 1659 transitions. [2023-12-16 15:46:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 15:46:08,105 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.666666666666667) internal successors, (85), 16 states have internal predecessors, (85), 4 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) Word has length 105 [2023-12-16 15:46:08,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:46:08,107 INFO L225 Difference]: With dead ends: 1263 [2023-12-16 15:46:08,107 INFO L226 Difference]: Without dead ends: 606 [2023-12-16 15:46:08,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 15:46:08,108 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 469 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 15:46:08,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 901 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 15:46:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-12-16 15:46:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 558. [2023-12-16 15:46:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 501 states have (on average 1.2574850299401197) internal successors, (630), 501 states have internal predecessors, (630), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 15:46:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 726 transitions. [2023-12-16 15:46:08,138 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 726 transitions. Word has length 105 [2023-12-16 15:46:08,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:46:08,138 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 726 transitions. [2023-12-16 15:46:08,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.666666666666667) internal successors, (85), 16 states have internal predecessors, (85), 4 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-16 15:46:08,138 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 726 transitions. [2023-12-16 15:46:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-16 15:46:08,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:46:08,139 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:46:08,147 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 [2023-12-16 15:46:08,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:46:08,346 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:46:08,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:46:08,347 INFO L85 PathProgramCache]: Analyzing trace with hash -229544120, now seen corresponding path program 1 times [2023-12-16 15:46:08,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:46:08,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393037961] [2023-12-16 15:46:08,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:46:08,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:46:08,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:46:08,348 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:46:08,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 15:46:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:46:08,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 15:46:08,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:46:08,654 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 [2023-12-16 15:46:09,914 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 [2023-12-16 15:46:09,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2023-12-16 15:46:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 16 proven. 135 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-16 15:46:09,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:46:10,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:46:10,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 46 [2023-12-16 15:46:11,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:46:11,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393037961] [2023-12-16 15:46:11,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393037961] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:46:11,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1438637924] [2023-12-16 15:46:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:46:11,260 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:46:11,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:46:11,276 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:46:11,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-16 15:46:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:46:11,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 15:46:11,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:46:11,966 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 [2023-12-16 15:46:11,969 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 [2023-12-16 15:46:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:46:13,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:46:13,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-12-16 15:46:13,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1438637924] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:46:13,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:46:13,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9] total 26 [2023-12-16 15:46:13,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749766305] [2023-12-16 15:46:13,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:46:13,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-16 15:46:13,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:46:13,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-16 15:46:13,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1492, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 15:46:13,701 INFO L87 Difference]: Start difference. First operand 558 states and 726 transitions. Second operand has 27 states, 23 states have (on average 3.869565217391304) internal successors, (89), 22 states have internal predecessors, (89), 7 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (24), 4 states have call predecessors, (24), 7 states have call successors, (24) [2023-12-16 15:46:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:46:17,853 INFO L93 Difference]: Finished difference Result 1204 states and 1555 transitions. [2023-12-16 15:46:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-16 15:46:17,854 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 3.869565217391304) internal successors, (89), 22 states have internal predecessors, (89), 7 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (24), 4 states have call predecessors, (24), 7 states have call successors, (24) Word has length 106 [2023-12-16 15:46:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:46:17,856 INFO L225 Difference]: With dead ends: 1204 [2023-12-16 15:46:17,856 INFO L226 Difference]: Without dead ends: 744 [2023-12-16 15:46:17,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=904, Invalid=3518, Unknown=0, NotChecked=0, Total=4422 [2023-12-16 15:46:17,857 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 626 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:46:17,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1721 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 15:46:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-12-16 15:46:17,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 640. [2023-12-16 15:46:17,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 567 states have (on average 1.252204585537919) internal successors, (710), 567 states have internal predecessors, (710), 60 states have call successors, (60), 12 states have call predecessors, (60), 12 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:46:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 830 transitions. [2023-12-16 15:46:17,896 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 830 transitions. Word has length 106 [2023-12-16 15:46:17,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:46:17,896 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 830 transitions. [2023-12-16 15:46:17,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 3.869565217391304) internal successors, (89), 22 states have internal predecessors, (89), 7 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (24), 4 states have call predecessors, (24), 7 states have call successors, (24) [2023-12-16 15:46:17,897 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 830 transitions. [2023-12-16 15:46:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 15:46:17,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:46:17,897 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:46:17,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-12-16 15:46:18,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-16 15:46:18,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:46:18,304 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:46:18,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:46:18,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1309957441, now seen corresponding path program 1 times [2023-12-16 15:46:18,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:46:18,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082244828] [2023-12-16 15:46:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:46:18,305 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 [2023-12-16 15:46:18,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:46:18,306 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) [2023-12-16 15:46:18,339 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 [2023-12-16 15:46:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:46:18,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 15:46:18,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:46:19,273 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 52 treesize of output 36 [2023-12-16 15:46:19,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2023-12-16 15:46:19,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-12-16 15:46:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:46:19,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:46:19,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:46:19,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082244828] [2023-12-16 15:46:19,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082244828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:46:19,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:46:19,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 15:46:19,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387159940] [2023-12-16 15:46:19,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:46:19,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:46:19,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:46:19,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:46:19,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:46:19,328 INFO L87 Difference]: Start difference. First operand 640 states and 830 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:46:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:46:20,632 INFO L93 Difference]: Finished difference Result 1343 states and 1729 transitions. [2023-12-16 15:46:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 15:46:20,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 107 [2023-12-16 15:46:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:46:20,635 INFO L225 Difference]: With dead ends: 1343 [2023-12-16 15:46:20,635 INFO L226 Difference]: Without dead ends: 704 [2023-12-16 15:46:20,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:46:20,636 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 138 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:46:20,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 599 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 15:46:20,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-12-16 15:46:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 658. [2023-12-16 15:46:20,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 585 states have (on average 1.2427350427350428) internal successors, (727), 585 states have internal predecessors, (727), 60 states have call successors, (60), 12 states have call predecessors, (60), 12 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:46:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 847 transitions. [2023-12-16 15:46:20,676 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 847 transitions. Word has length 107 [2023-12-16 15:46:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:46:20,676 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 847 transitions. [2023-12-16 15:46:20,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:46:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 847 transitions. [2023-12-16 15:46:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 15:46:20,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:46:20,677 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:46:20,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-16 15:46:20,883 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 [2023-12-16 15:46:20,884 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:46:20,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:46:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash 462701872, now seen corresponding path program 1 times [2023-12-16 15:46:20,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:46:20,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374408077] [2023-12-16 15:46:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:46:20,885 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 [2023-12-16 15:46:20,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:46:20,886 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) [2023-12-16 15:46:20,916 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 [2023-12-16 15:46:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:46:21,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 15:46:21,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:46:22,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 45 [2023-12-16 15:46:22,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2023-12-16 15:46:22,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-16 15:46:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-16 15:46:22,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:46:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:46:28,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:46:28,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374408077] [2023-12-16 15:46:28,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374408077] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:46:28,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:46:28,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-12-16 15:46:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370440316] [2023-12-16 15:46:28,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:46:28,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:46:28,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:46:28,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:46:28,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 15:46:28,230 INFO L87 Difference]: Start difference. First operand 658 states and 847 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:46:39,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:46:39,409 INFO L93 Difference]: Finished difference Result 1399 states and 1789 transitions. [2023-12-16 15:46:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:46:39,427 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-16 15:46:39,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:46:39,429 INFO L225 Difference]: With dead ends: 1399 [2023-12-16 15:46:39,429 INFO L226 Difference]: Without dead ends: 842 [2023-12-16 15:46:39,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:46:39,430 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 59 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-16 15:46:39,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 288 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-12-16 15:46:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-12-16 15:46:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 805. [2023-12-16 15:46:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 732 states have (on average 1.2308743169398908) internal successors, (901), 732 states have internal predecessors, (901), 60 states have call successors, (60), 12 states have call predecessors, (60), 12 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:46:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1021 transitions. [2023-12-16 15:46:39,485 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1021 transitions. Word has length 108 [2023-12-16 15:46:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:46:39,485 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1021 transitions. [2023-12-16 15:46:39,485 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 15:46:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1021 transitions. [2023-12-16 15:46:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 15:46:39,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:46:39,486 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:46:39,508 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 [2023-12-16 15:46:39,692 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 [2023-12-16 15:46:39,693 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:46:39,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:46:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1502735747, now seen corresponding path program 1 times [2023-12-16 15:46:39,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:46:39,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877445608] [2023-12-16 15:46:39,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:46:39,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:46:39,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:46:39,695 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) [2023-12-16 15:46:39,698 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 [2023-12-16 15:46:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:46:39,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-16 15:46:39,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:46:40,045 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 [2023-12-16 15:46:42,117 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 [2023-12-16 15:46:42,126 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 [2023-12-16 15:46:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 16 proven. 135 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-16 15:46:42,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:46:43,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:46:43,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 46 [2023-12-16 15:46:44,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:46:44,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877445608] [2023-12-16 15:46:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877445608] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:46:44,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1599104824] [2023-12-16 15:46:44,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:46:44,015 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:46:44,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:46:44,016 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:46:44,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-16 15:46:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:46:44,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 15:46:44,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:46:44,833 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 [2023-12-16 15:46:44,847 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 [2023-12-16 15:46:47,065 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 [2023-12-16 15:46:47,075 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 [2023-12-16 15:46:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:46:47,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:46:47,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-12-16 15:46:47,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1599104824] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:46:47,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:46:47,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 27 [2023-12-16 15:46:47,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472764799] [2023-12-16 15:46:47,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:46:47,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 15:46:47,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:46:47,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 15:46:47,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1325, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 15:46:47,430 INFO L87 Difference]: Start difference. First operand 805 states and 1021 transitions. Second operand has 28 states, 24 states have (on average 4.541666666666667) internal successors, (109), 23 states have internal predecessors, (109), 7 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (24), 4 states have call predecessors, (24), 7 states have call successors, (24) Received shutdown request... [2023-12-16 15:46:47,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 15:46:47,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 300 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=340, Invalid=1382, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 15:46:47,665 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:46:47,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:46:47,666 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 15:46:47,673 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 15:46:47,674 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 (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 15:46:47,674 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 [2023-12-16 15:46:47,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2023-12-16 15:46:47,872 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 [2023-12-16 15:46:48,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-16 15:46:48,067 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (805states) and FLOYD_HOARE automaton (currently 3 states, 28 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-14-1 term,while SimplifyDDA2 was simplifying 11 xjuncts wrt. a ATOM-1 context. [2023-12-16 15:46:48,070 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] [2023-12-16 15:46:48,072 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 15:46:48,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:46:48 BoogieIcfgContainer [2023-12-16 15:46:48,073 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 15:46:48,073 INFO L158 Benchmark]: Toolchain (without parser) took 74630.46ms. Allocated memory was 272.6MB in the beginning and 518.0MB in the end (delta: 245.4MB). Free memory was 227.3MB in the beginning and 429.1MB in the end (delta: -201.7MB). Peak memory consumption was 45.7MB. Max. memory is 8.0GB. [2023-12-16 15:46:48,074 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 15:46:48,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.15ms. Allocated memory is still 272.6MB. Free memory was 227.3MB in the beginning and 212.6MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 15:46:48,074 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.50ms. Allocated memory is still 272.6MB. Free memory was 212.6MB in the beginning and 209.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 15:46:48,074 INFO L158 Benchmark]: Boogie Preprocessor took 58.43ms. Allocated memory is still 272.6MB. Free memory was 209.5MB in the beginning and 203.7MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 15:46:48,074 INFO L158 Benchmark]: RCFGBuilder took 1093.91ms. Allocated memory is still 272.6MB. Free memory was 203.2MB in the beginning and 157.6MB in the end (delta: 45.6MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2023-12-16 15:46:48,074 INFO L158 Benchmark]: TraceAbstraction took 73219.42ms. Allocated memory was 272.6MB in the beginning and 518.0MB in the end (delta: 245.4MB). Free memory was 157.1MB in the beginning and 429.1MB in the end (delta: -272.0MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 15:46:48,075 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.15ms. Allocated memory is still 272.6MB. Free memory was 227.3MB in the beginning and 212.6MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.50ms. Allocated memory is still 272.6MB. Free memory was 212.6MB in the beginning and 209.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.43ms. Allocated memory is still 272.6MB. Free memory was 209.5MB in the beginning and 203.7MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1093.91ms. Allocated memory is still 272.6MB. Free memory was 203.2MB in the beginning and 157.6MB in the end (delta: 45.6MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. * TraceAbstraction took 73219.42ms. Allocated memory was 272.6MB in the beginning and 518.0MB in the end (delta: 245.4MB). Free memory was 157.1MB in the beginning and 429.1MB in the end (delta: -272.0MB). There was no memory consumed. 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 (805states) and FLOYD_HOARE automaton (currently 3 states, 28 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-14-1 term,while SimplifyDDA2 was simplifying 11 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.2s, OverallIterations: 19, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 31.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5279 SdHoareTripleChecker+Valid, 23.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5279 mSDsluCounter, 11625 SdHoareTripleChecker+Invalid, 22.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9444 mSDsCounter, 684 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5327 IncrementalHoareTripleChecker+Invalid, 6011 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 684 mSolverCounterUnsat, 2181 mSDtfsCounter, 5327 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3472 GetRequests, 3088 SyntacticMatches, 3 SemanticMatches, 380 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3652 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=805occurred in iteration=18, InterpolantAutomatonStates: 217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 18 MinimizatonAttempts, 1162 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 27.5s InterpolantComputationTime, 2555 NumberOfCodeBlocks, 2555 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2942 ConstructedInterpolants, 206 QuantifiedInterpolants, 35975 SizeOfPredicates, 337 NumberOfNonLiveVariables, 6892 ConjunctsInSsa, 338 ConjunctsInUnsatCore, 29 InterpolantComputations, 13 PerfectInterpolantSequences, 6714/7656 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