/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-9.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 17:15:42,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 17:15:42,833 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 17:15:42,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 17:15:42,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 17:15:42,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 17:15:42,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 17:15:42,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 17:15:42,868 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 17:15:42,871 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 17:15:42,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 17:15:42,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 17:15:42,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 17:15:42,873 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 17:15:42,873 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 17:15:42,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 17:15:42,874 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 17:15:42,874 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 17:15:42,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 17:15:42,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 17:15:42,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 17:15:42,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 17:15:42,875 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 17:15:42,875 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 17:15:42,875 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 17:15:42,875 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 17:15:42,875 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 17:15:42,875 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 17:15:42,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 17:15:42,876 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 17:15:42,876 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 17:15:42,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 17:15:42,877 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 17:15:42,877 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 17:15:42,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 17:15:42,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 17:15:42,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 17:15:42,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 17:15:42,877 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 17:15:42,877 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 17:15:42,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 17:15:42,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 17:15:42,878 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 17:15:42,878 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 17:15:42,878 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 17:15:42,878 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 17:15:42,878 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 17:15:43,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 17:15:43,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 17:15:43,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 17:15:43,099 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 17:15:43,101 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 17:15:43,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-9.i [2023-12-24 17:15:44,143 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 17:15:44,328 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 17:15:44,329 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-9.i [2023-12-24 17:15:44,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb1dc556d/c0f434491fe54604ac5daa1b4f5c6c52/FLAGa576f7092 [2023-12-24 17:15:44,347 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb1dc556d/c0f434491fe54604ac5daa1b4f5c6c52 [2023-12-24 17:15:44,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 17:15:44,350 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 17:15:44,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 17:15:44,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 17:15:44,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 17:15:44,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1315565d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44, skipping insertion in model container [2023-12-24 17:15:44,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,384 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 17:15:44,507 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-9.i[915,928] [2023-12-24 17:15:44,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 17:15:44,561 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 17:15:44,569 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-9.i[915,928] [2023-12-24 17:15:44,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 17:15:44,605 INFO L206 MainTranslator]: Completed translation [2023-12-24 17:15:44,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44 WrapperNode [2023-12-24 17:15:44,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 17:15:44,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 17:15:44,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 17:15:44,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 17:15:44,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,669 INFO L138 Inliner]: procedures = 36, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 353 [2023-12-24 17:15:44,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 17:15:44,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 17:15:44,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 17:15:44,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 17:15:44,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,729 INFO L175 MemorySlicer]: Split 86 memory accesses to 10 slices as follows [2, 10, 18, 6, 3, 3, 14, 8, 14, 8]. 21 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 13 writes are split as follows [0, 4, 1, 1, 1, 1, 1, 1, 2, 1]. [2023-12-24 17:15:44,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,758 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 17:15:44,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 17:15:44,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 17:15:44,779 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 17:15:44,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (1/1) ... [2023-12-24 17:15:44,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 17:15:44,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 17:15:44,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 17:15:44,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 17:15:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 17:15:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 17:15:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 17:15:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 17:15:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 17:15:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 17:15:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 17:15:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 17:15:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2023-12-24 17:15:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#8 [2023-12-24 17:15:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#9 [2023-12-24 17:15:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 17:15:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 17:15:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 17:15:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 17:15:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 17:15:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 17:15:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 17:15:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2023-12-24 17:15:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#8 [2023-12-24 17:15:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#9 [2023-12-24 17:15:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 17:15:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 17:15:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 17:15:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 17:15:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 17:15:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 17:15:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 17:15:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 17:15:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 17:15:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 17:15:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 17:15:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 17:15:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 17:15:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 17:15:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 17:15:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-24 17:15:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-24 17:15:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 17:15:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 17:15:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 17:15:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 17:15:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 17:15:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 17:15:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 17:15:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2023-12-24 17:15:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#8 [2023-12-24 17:15:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#9 [2023-12-24 17:15:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 17:15:44,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 17:15:44,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 17:15:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 17:15:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 17:15:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 17:15:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 17:15:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 17:15:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-24 17:15:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-24 17:15:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 17:15:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 17:15:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 17:15:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 17:15:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 17:15:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 17:15:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 17:15:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 17:15:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 17:15:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 17:15:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 17:15:44,861 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 17:15:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 17:15:44,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 17:15:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 17:15:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 17:15:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 17:15:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 17:15:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 17:15:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 17:15:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 17:15:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 17:15:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 17:15:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 17:15:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 17:15:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 17:15:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 17:15:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 17:15:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 17:15:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 17:15:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 17:15:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 17:15:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 17:15:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 17:15:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 17:15:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 17:15:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 17:15:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 17:15:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 17:15:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 17:15:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 17:15:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 17:15:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-24 17:15:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-24 17:15:45,043 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 17:15:45,045 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 17:15:45,479 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 17:15:45,511 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 17:15:45,512 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 17:15:45,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:15:45 BoogieIcfgContainer [2023-12-24 17:15:45,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 17:15:45,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 17:15:45,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 17:15:45,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 17:15:45,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 05:15:44" (1/3) ... [2023-12-24 17:15:45,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17323859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:15:45, skipping insertion in model container [2023-12-24 17:15:45,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:15:44" (2/3) ... [2023-12-24 17:15:45,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17323859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:15:45, skipping insertion in model container [2023-12-24 17:15:45,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:15:45" (3/3) ... [2023-12-24 17:15:45,517 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-9.i [2023-12-24 17:15:45,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 17:15:45,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 17:15:45,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 17:15:45,571 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;@4c8e14a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 17:15:45,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 17:15:45,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 55 states have (on average 1.490909090909091) internal successors, (82), 56 states have internal predecessors, (82), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-24 17:15:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-24 17:15:45,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:15:45,582 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:15:45,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:15:45,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:15:45,591 INFO L85 PathProgramCache]: Analyzing trace with hash -269528693, now seen corresponding path program 1 times [2023-12-24 17:15:45,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:15:45,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512848169] [2023-12-24 17:15:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:45,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:45,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:15:45,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:15:45,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 17:15:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:45,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 17:15:45,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-24 17:15:45,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:15:45,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:15:45,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512848169] [2023-12-24 17:15:45,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512848169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:15:45,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:15:45,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 17:15:45,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827046138] [2023-12-24 17:15:45,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:15:45,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 17:15:45,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:15:45,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 17:15:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 17:15:45,923 INFO L87 Difference]: Start difference. First operand has 63 states, 55 states have (on average 1.490909090909091) internal successors, (82), 56 states have internal predecessors, (82), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-24 17:15:45,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:15:45,964 INFO L93 Difference]: Finished difference Result 123 states and 187 transitions. [2023-12-24 17:15:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 17:15:45,967 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2023-12-24 17:15:45,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:15:45,972 INFO L225 Difference]: With dead ends: 123 [2023-12-24 17:15:45,972 INFO L226 Difference]: Without dead ends: 61 [2023-12-24 17:15:45,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 17:15:45,977 INFO L413 NwaCegarLoop]: 83 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, 83 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:15:45,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:15:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-24 17:15:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-24 17:15:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.4259259259259258) internal successors, (77), 54 states have internal predecessors, (77), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-24 17:15:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 87 transitions. [2023-12-24 17:15:46,011 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 87 transitions. Word has length 55 [2023-12-24 17:15:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:15:46,012 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 87 transitions. [2023-12-24 17:15:46,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-24 17:15:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 87 transitions. [2023-12-24 17:15:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-24 17:15:46,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:15:46,015 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:15:46,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 17:15:46,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:46,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:15:46,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:15:46,222 INFO L85 PathProgramCache]: Analyzing trace with hash 838571601, now seen corresponding path program 1 times [2023-12-24 17:15:46,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:15:46,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429738852] [2023-12-24 17:15:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:46,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:46,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:15:46,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:15:46,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 17:15:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:46,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 17:15:46,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 17:15:46,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:15:46,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:15:46,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429738852] [2023-12-24 17:15:46,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429738852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:15:46,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:15:46,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:15:46,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771009867] [2023-12-24 17:15:46,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:15:46,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:15:46,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:15:46,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:15:46,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 17:15:46,518 INFO L87 Difference]: Start difference. First operand 61 states and 87 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:46,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:15:46,573 INFO L93 Difference]: Finished difference Result 145 states and 208 transitions. [2023-12-24 17:15:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:15:46,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2023-12-24 17:15:46,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:15:46,575 INFO L225 Difference]: With dead ends: 145 [2023-12-24 17:15:46,575 INFO L226 Difference]: Without dead ends: 85 [2023-12-24 17:15:46,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:15:46,576 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 48 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:15:46,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 249 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:15:46,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-24 17:15:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2023-12-24 17:15:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 56 states have internal predecessors, (79), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-24 17:15:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2023-12-24 17:15:46,582 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 55 [2023-12-24 17:15:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:15:46,583 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2023-12-24 17:15:46,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2023-12-24 17:15:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-24 17:15:46,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:15:46,584 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:15:46,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 17:15:46,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:46,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:15:46,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:15:46,791 INFO L85 PathProgramCache]: Analyzing trace with hash 445544591, now seen corresponding path program 1 times [2023-12-24 17:15:46,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:15:46,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881341913] [2023-12-24 17:15:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:46,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:46,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:15:46,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:15:46,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 17:15:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:47,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 17:15:47,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 17:15:47,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:15:47,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:15:47,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881341913] [2023-12-24 17:15:47,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881341913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:15:47,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:15:47,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:15:47,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745339354] [2023-12-24 17:15:47,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:15:47,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:15:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:15:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:15:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:15:47,029 INFO L87 Difference]: Start difference. First operand 63 states and 89 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:47,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:15:47,093 INFO L93 Difference]: Finished difference Result 156 states and 222 transitions. [2023-12-24 17:15:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:15:47,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2023-12-24 17:15:47,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:15:47,095 INFO L225 Difference]: With dead ends: 156 [2023-12-24 17:15:47,095 INFO L226 Difference]: Without dead ends: 94 [2023-12-24 17:15:47,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:15:47,096 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 69 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:15:47,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 342 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:15:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-24 17:15:47,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 65. [2023-12-24 17:15:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-24 17:15:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 91 transitions. [2023-12-24 17:15:47,102 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 91 transitions. Word has length 55 [2023-12-24 17:15:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:15:47,102 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 91 transitions. [2023-12-24 17:15:47,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:47,102 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 91 transitions. [2023-12-24 17:15:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-24 17:15:47,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:15:47,103 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:15:47,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 17:15:47,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:47,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:15:47,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:15:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash -363802035, now seen corresponding path program 1 times [2023-12-24 17:15:47,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:15:47,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678140019] [2023-12-24 17:15:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:47,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:47,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:15:47,317 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:15:47,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 17:15:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:47,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:15:47,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 17:15:47,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:15:47,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:15:47,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678140019] [2023-12-24 17:15:47,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678140019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:15:47,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:15:47,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 17:15:47,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022712400] [2023-12-24 17:15:47,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:15:47,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:15:47,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:15:47,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:15:47,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:15:47,562 INFO L87 Difference]: Start difference. First operand 65 states and 91 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:47,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:15:47,717 INFO L93 Difference]: Finished difference Result 150 states and 209 transitions. [2023-12-24 17:15:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 17:15:47,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2023-12-24 17:15:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:15:47,721 INFO L225 Difference]: With dead ends: 150 [2023-12-24 17:15:47,721 INFO L226 Difference]: Without dead ends: 86 [2023-12-24 17:15:47,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:15:47,728 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 34 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:15:47,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 446 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:15:47,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-24 17:15:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 69. [2023-12-24 17:15:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 62 states have internal predecessors, (85), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-24 17:15:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2023-12-24 17:15:47,738 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 55 [2023-12-24 17:15:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:15:47,738 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2023-12-24 17:15:47,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:47,739 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2023-12-24 17:15:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-24 17:15:47,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:15:47,739 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:15:47,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 17:15:47,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:47,946 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:15:47,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:15:47,946 INFO L85 PathProgramCache]: Analyzing trace with hash -363742453, now seen corresponding path program 1 times [2023-12-24 17:15:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:15:47,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779926832] [2023-12-24 17:15:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:47,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:47,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:15:47,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:15:47,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 17:15:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:48,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 17:15:48,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:48,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:15:48,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-24 17:15:48,226 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 42 treesize of output 30 [2023-12-24 17:15:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 17:15:48,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:15:48,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:15:48,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779926832] [2023-12-24 17:15:48,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779926832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:15:48,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:15:48,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:15:48,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134602834] [2023-12-24 17:15:48,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:15:48,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:15:48,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:15:48,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:15:48,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:15:48,261 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:48,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:15:48,456 INFO L93 Difference]: Finished difference Result 161 states and 221 transitions. [2023-12-24 17:15:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:15:48,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2023-12-24 17:15:48,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:15:48,457 INFO L225 Difference]: With dead ends: 161 [2023-12-24 17:15:48,458 INFO L226 Difference]: Without dead ends: 93 [2023-12-24 17:15:48,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:15:48,458 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 202 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:15:48,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 218 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:15:48,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-24 17:15:48,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 71. [2023-12-24 17:15:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-24 17:15:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 97 transitions. [2023-12-24 17:15:48,463 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 97 transitions. Word has length 55 [2023-12-24 17:15:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:15:48,464 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 97 transitions. [2023-12-24 17:15:48,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 97 transitions. [2023-12-24 17:15:48,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-24 17:15:48,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:15:48,465 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:15:48,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 17:15:48,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:48,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:15:48,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:15:48,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2121878124, now seen corresponding path program 1 times [2023-12-24 17:15:48,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:15:48,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782148360] [2023-12-24 17:15:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:48,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:48,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:15:48,668 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:15:48,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 17:15:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:48,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:15:48,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:49,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 17:15:49,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:15:49,835 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 188 treesize of output 118 [2023-12-24 17:15:49,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:15:49,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 255 treesize of output 135 [2023-12-24 17:15:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-24 17:15:49,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:15:50,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:15:50,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782148360] [2023-12-24 17:15:50,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782148360] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:15:50,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [669808075] [2023-12-24 17:15:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:50,069 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:15:50,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:15:50,113 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) [2023-12-24 17:15:50,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-24 17:15:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:51,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 17:15:51,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:51,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-12-24 17:15:52,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 17:15:52,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:15:52,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 118 [2023-12-24 17:15:52,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 135 [2023-12-24 17:15:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-24 17:15:52,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:15:52,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [669808075] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:15:52,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:15:52,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-24 17:15:52,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059251174] [2023-12-24 17:15:52,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:15:52,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 17:15:52,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:15:52,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 17:15:52,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:15:52,578 INFO L87 Difference]: Start difference. First operand 71 states and 97 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-24 17:15:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:15:53,799 INFO L93 Difference]: Finished difference Result 217 states and 294 transitions. [2023-12-24 17:15:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 17:15:53,801 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 57 [2023-12-24 17:15:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:15:53,802 INFO L225 Difference]: With dead ends: 217 [2023-12-24 17:15:53,802 INFO L226 Difference]: Without dead ends: 147 [2023-12-24 17:15:53,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-12-24 17:15:53,803 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 362 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:15:53,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 742 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 17:15:53,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-24 17:15:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 139. [2023-12-24 17:15:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 125 states have (on average 1.344) internal successors, (168), 126 states have internal predecessors, (168), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-24 17:15:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 188 transitions. [2023-12-24 17:15:53,824 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 188 transitions. Word has length 57 [2023-12-24 17:15:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:15:53,825 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 188 transitions. [2023-12-24 17:15:53,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-24 17:15:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 188 transitions. [2023-12-24 17:15:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-24 17:15:53,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:15:53,826 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:15:53,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 17:15:54,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-24 17:15:54,236 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 [2023-12-24 17:15:54,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:15:54,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:15:54,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1363742546, now seen corresponding path program 1 times [2023-12-24 17:15:54,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:15:54,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984087175] [2023-12-24 17:15:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:54,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:54,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:15:54,239 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:15:54,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 17:15:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:54,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 17:15:54,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:54,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 17:15:54,466 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 22 [2023-12-24 17:15:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 17:15:54,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:15:54,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:15:54,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984087175] [2023-12-24 17:15:54,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984087175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:15:54,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:15:54,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:15:54,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556775160] [2023-12-24 17:15:54,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:15:54,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:15:54,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:15:54,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:15:54,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:15:54,477 INFO L87 Difference]: Start difference. First operand 139 states and 188 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:15:54,552 INFO L93 Difference]: Finished difference Result 321 states and 433 transitions. [2023-12-24 17:15:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:15:54,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 57 [2023-12-24 17:15:54,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:15:54,555 INFO L225 Difference]: With dead ends: 321 [2023-12-24 17:15:54,555 INFO L226 Difference]: Without dead ends: 183 [2023-12-24 17:15:54,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:15:54,556 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 93 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:15:54,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 364 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:15:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-24 17:15:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 139. [2023-12-24 17:15:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 125 states have (on average 1.328) internal successors, (166), 126 states have internal predecessors, (166), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-24 17:15:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2023-12-24 17:15:54,568 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 186 transitions. Word has length 57 [2023-12-24 17:15:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:15:54,568 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 186 transitions. [2023-12-24 17:15:54,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:54,569 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2023-12-24 17:15:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-24 17:15:54,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:15:54,569 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:15:54,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 17:15:54,775 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 [2023-12-24 17:15:54,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:15:54,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:15:54,776 INFO L85 PathProgramCache]: Analyzing trace with hash 970715536, now seen corresponding path program 1 times [2023-12-24 17:15:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:15:54,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591373323] [2023-12-24 17:15:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:54,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:54,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:15:54,778 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:15:54,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 17:15:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:54,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 17:15:54,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:55,192 INFO L349 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2023-12-24 17:15:55,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2023-12-24 17:15:55,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:15:55,244 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 25 treesize of output 21 [2023-12-24 17:15:55,372 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 91 treesize of output 75 [2023-12-24 17:15:55,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 54 [2023-12-24 17:15:55,381 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-24 17:15:55,382 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 82 treesize of output 54 [2023-12-24 17:15:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 17:15:55,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:15:55,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:15:55,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591373323] [2023-12-24 17:15:55,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591373323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:15:55,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:15:55,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 17:15:55,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053020725] [2023-12-24 17:15:55,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:15:55,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 17:15:55,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:15:55,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 17:15:55,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:15:55,419 INFO L87 Difference]: Start difference. First operand 139 states and 186 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:15:56,499 INFO L93 Difference]: Finished difference Result 653 states and 871 transitions. [2023-12-24 17:15:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 17:15:56,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 57 [2023-12-24 17:15:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:15:56,502 INFO L225 Difference]: With dead ends: 653 [2023-12-24 17:15:56,502 INFO L226 Difference]: Without dead ends: 515 [2023-12-24 17:15:56,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2023-12-24 17:15:56,503 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 609 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:15:56,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 822 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 17:15:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-12-24 17:15:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 415. [2023-12-24 17:15:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 375 states have (on average 1.312) internal successors, (492), 378 states have internal predecessors, (492), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 17:15:56,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 552 transitions. [2023-12-24 17:15:56,543 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 552 transitions. Word has length 57 [2023-12-24 17:15:56,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:15:56,543 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 552 transitions. [2023-12-24 17:15:56,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:56,543 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 552 transitions. [2023-12-24 17:15:56,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-24 17:15:56,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:15:56,544 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:15:56,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 17:15:56,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:56,750 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:15:56,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:15:56,751 INFO L85 PathProgramCache]: Analyzing trace with hash 153067086, now seen corresponding path program 1 times [2023-12-24 17:15:56,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:15:56,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030272454] [2023-12-24 17:15:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:56,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:56,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:15:56,752 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:15:56,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 17:15:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:56,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 17:15:56,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:57,134 INFO L349 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2023-12-24 17:15:57,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2023-12-24 17:15:57,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:15:57,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2023-12-24 17:15:57,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 17:15:57,405 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-24 17:15:57,405 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 52 treesize of output 32 [2023-12-24 17:15:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 17:15:57,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:15:57,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:15:57,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030272454] [2023-12-24 17:15:57,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030272454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:15:57,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:15:57,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 17:15:57,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733477741] [2023-12-24 17:15:57,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:15:57,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:15:57,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:15:57,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:15:57,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:15:57,435 INFO L87 Difference]: Start difference. First operand 415 states and 552 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:15:58,515 INFO L93 Difference]: Finished difference Result 928 states and 1229 transitions. [2023-12-24 17:15:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:15:58,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 57 [2023-12-24 17:15:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:15:58,517 INFO L225 Difference]: With dead ends: 928 [2023-12-24 17:15:58,517 INFO L226 Difference]: Without dead ends: 514 [2023-12-24 17:15:58,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:15:58,518 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 277 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:15:58,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 499 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 17:15:58,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-24 17:15:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 315. [2023-12-24 17:15:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 288 states have (on average 1.3333333333333333) internal successors, (384), 290 states have internal predecessors, (384), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 17:15:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 424 transitions. [2023-12-24 17:15:58,541 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 424 transitions. Word has length 57 [2023-12-24 17:15:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:15:58,541 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 424 transitions. [2023-12-24 17:15:58,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:15:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 424 transitions. [2023-12-24 17:15:58,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-24 17:15:58,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:15:58,543 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:15:58,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 17:15:58,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:58,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:15:58,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:15:58,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1420278250, now seen corresponding path program 1 times [2023-12-24 17:15:58,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:15:58,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915919960] [2023-12-24 17:15:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:58,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:58,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:15:58,751 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:15:58,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 17:15:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:58,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 17:15:58,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-24 17:15:58,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:15:58,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:15:58,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915919960] [2023-12-24 17:15:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915919960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:15:58,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:15:58,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:15:58,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277591650] [2023-12-24 17:15:58,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:15:58,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:15:58,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:15:58,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:15:58,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 17:15:58,935 INFO L87 Difference]: Start difference. First operand 315 states and 424 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-24 17:15:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:15:59,001 INFO L93 Difference]: Finished difference Result 637 states and 859 transitions. [2023-12-24 17:15:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:15:59,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2023-12-24 17:15:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:15:59,003 INFO L225 Difference]: With dead ends: 637 [2023-12-24 17:15:59,003 INFO L226 Difference]: Without dead ends: 323 [2023-12-24 17:15:59,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:15:59,004 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 7 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:15:59,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 247 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:15:59,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-24 17:15:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 315. [2023-12-24 17:15:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 288 states have (on average 1.3263888888888888) internal successors, (382), 290 states have internal predecessors, (382), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 17:15:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 422 transitions. [2023-12-24 17:15:59,024 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 422 transitions. Word has length 57 [2023-12-24 17:15:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:15:59,024 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 422 transitions. [2023-12-24 17:15:59,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-24 17:15:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 422 transitions. [2023-12-24 17:15:59,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-24 17:15:59,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:15:59,025 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:15:59,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 17:15:59,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:59,230 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:15:59,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:15:59,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1836731428, now seen corresponding path program 1 times [2023-12-24 17:15:59,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:15:59,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570128975] [2023-12-24 17:15:59,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:15:59,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:15:59,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:15:59,232 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:15:59,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 17:15:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:15:59,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 17:15:59,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:15:59,613 INFO L349 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2023-12-24 17:15:59,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2023-12-24 17:15:59,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:15:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 17:15:59,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:15:59,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:15:59,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570128975] [2023-12-24 17:15:59,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570128975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:15:59,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:15:59,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 17:15:59,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532554034] [2023-12-24 17:15:59,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:15:59,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:15:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:15:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:15:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:15:59,810 INFO L87 Difference]: Start difference. First operand 315 states and 422 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:16:00,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:16:00,282 INFO L93 Difference]: Finished difference Result 365 states and 485 transitions. [2023-12-24 17:16:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:16:00,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 59 [2023-12-24 17:16:00,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:16:00,284 INFO L225 Difference]: With dead ends: 365 [2023-12-24 17:16:00,284 INFO L226 Difference]: Without dead ends: 363 [2023-12-24 17:16:00,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:16:00,285 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 259 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:16:00,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 495 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 17:16:00,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-12-24 17:16:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 319. [2023-12-24 17:16:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 292 states have (on average 1.321917808219178) internal successors, (386), 294 states have internal predecessors, (386), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 17:16:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 426 transitions. [2023-12-24 17:16:00,306 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 426 transitions. Word has length 59 [2023-12-24 17:16:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:16:00,306 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 426 transitions. [2023-12-24 17:16:00,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:16:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 426 transitions. [2023-12-24 17:16:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-24 17:16:00,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:16:00,307 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:16:00,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 17:16:00,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:00,513 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:16:00,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:16:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1836791010, now seen corresponding path program 1 times [2023-12-24 17:16:00,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:16:00,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210921187] [2023-12-24 17:16:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:16:00,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:00,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:16:00,515 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:16:00,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 17:16:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:16:00,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 17:16:00,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:16:00,906 INFO L349 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2023-12-24 17:16:00,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2023-12-24 17:16:01,021 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-24 17:16:01,022 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 53 treesize of output 37 [2023-12-24 17:16:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 17:16:01,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:16:01,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:16:01,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210921187] [2023-12-24 17:16:01,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210921187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:16:01,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:16:01,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 17:16:01,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137114172] [2023-12-24 17:16:01,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:16:01,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:16:01,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:16:01,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:16:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:16:01,046 INFO L87 Difference]: Start difference. First operand 319 states and 426 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:16:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:16:01,384 INFO L93 Difference]: Finished difference Result 651 states and 868 transitions. [2023-12-24 17:16:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:16:01,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 59 [2023-12-24 17:16:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:16:01,386 INFO L225 Difference]: With dead ends: 651 [2023-12-24 17:16:01,386 INFO L226 Difference]: Without dead ends: 333 [2023-12-24 17:16:01,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:16:01,387 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 204 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:16:01,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 394 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:16:01,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-24 17:16:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 325. [2023-12-24 17:16:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 298 states have (on average 1.3154362416107384) internal successors, (392), 300 states have internal predecessors, (392), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 17:16:01,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 432 transitions. [2023-12-24 17:16:01,411 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 432 transitions. Word has length 59 [2023-12-24 17:16:01,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:16:01,411 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 432 transitions. [2023-12-24 17:16:01,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:16:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 432 transitions. [2023-12-24 17:16:01,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-24 17:16:01,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:16:01,412 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:16:01,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 17:16:01,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:01,619 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:16:01,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:16:01,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1646055485, now seen corresponding path program 1 times [2023-12-24 17:16:01,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:16:01,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428388095] [2023-12-24 17:16:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:16:01,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:01,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:16:01,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:16:01,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 17:16:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:16:01,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 17:16:01,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:16:02,017 INFO L349 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2023-12-24 17:16:02,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2023-12-24 17:16:02,047 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-24 17:16:02,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 17:16:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 17:16:02,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:16:02,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:16:02,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428388095] [2023-12-24 17:16:02,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428388095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:16:02,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:16:02,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:16:02,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057039389] [2023-12-24 17:16:02,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:16:02,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:16:02,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:16:02,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:16:02,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:16:02,057 INFO L87 Difference]: Start difference. First operand 325 states and 432 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:16:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:16:02,330 INFO L93 Difference]: Finished difference Result 609 states and 808 transitions. [2023-12-24 17:16:02,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 17:16:02,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 59 [2023-12-24 17:16:02,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:16:02,332 INFO L225 Difference]: With dead ends: 609 [2023-12-24 17:16:02,332 INFO L226 Difference]: Without dead ends: 285 [2023-12-24 17:16:02,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:16:02,333 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 189 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:16:02,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 355 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:16:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-24 17:16:02,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 279. [2023-12-24 17:16:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 252 states have (on average 1.2936507936507937) internal successors, (326), 254 states have internal predecessors, (326), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 17:16:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 366 transitions. [2023-12-24 17:16:02,353 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 366 transitions. Word has length 59 [2023-12-24 17:16:02,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:16:02,353 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 366 transitions. [2023-12-24 17:16:02,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:16:02,354 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 366 transitions. [2023-12-24 17:16:02,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-24 17:16:02,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:16:02,354 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:16:02,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 17:16:02,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:02,560 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:16:02,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:16:02,561 INFO L85 PathProgramCache]: Analyzing trace with hash 687867349, now seen corresponding path program 1 times [2023-12-24 17:16:02,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:16:02,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782437933] [2023-12-24 17:16:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:16:02,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:02,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:16:02,562 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:16:02,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 17:16:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:16:02,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:16:02,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:16:02,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 17:16:02,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 17:16:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 17:16:02,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:16:02,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:16:02,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782437933] [2023-12-24 17:16:02,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782437933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:16:02,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:16:02,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:16:02,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84532943] [2023-12-24 17:16:02,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:16:02,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:16:02,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:16:02,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:16:02,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:16:02,888 INFO L87 Difference]: Start difference. First operand 279 states and 366 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:16:03,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:16:03,078 INFO L93 Difference]: Finished difference Result 671 states and 877 transitions. [2023-12-24 17:16:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:16:03,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 59 [2023-12-24 17:16:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:16:03,080 INFO L225 Difference]: With dead ends: 671 [2023-12-24 17:16:03,080 INFO L226 Difference]: Without dead ends: 393 [2023-12-24 17:16:03,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:16:03,081 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 69 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:16:03,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 277 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:16:03,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-24 17:16:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 373. [2023-12-24 17:16:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 338 states have (on average 1.2899408284023668) internal successors, (436), 340 states have internal predecessors, (436), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 17:16:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 488 transitions. [2023-12-24 17:16:03,139 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 488 transitions. Word has length 59 [2023-12-24 17:16:03,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:16:03,139 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 488 transitions. [2023-12-24 17:16:03,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:16:03,139 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 488 transitions. [2023-12-24 17:16:03,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-24 17:16:03,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:16:03,139 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:16:03,147 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 (16)] Forceful destruction successful, exit code 0 [2023-12-24 17:16:03,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:03,341 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:16:03,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:16:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1377437800, now seen corresponding path program 1 times [2023-12-24 17:16:03,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:16:03,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885926809] [2023-12-24 17:16:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:16:03,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:03,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:16:03,343 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:16:03,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 17:16:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:16:03,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:16:03,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:16:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-24 17:16:03,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:16:03,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:16:03,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885926809] [2023-12-24 17:16:03,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885926809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:16:03,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:16:03,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:16:03,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857543324] [2023-12-24 17:16:03,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:16:03,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:16:03,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:16:03,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:16:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:16:03,548 INFO L87 Difference]: Start difference. First operand 373 states and 488 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-24 17:16:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:16:03,651 INFO L93 Difference]: Finished difference Result 701 states and 917 transitions. [2023-12-24 17:16:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:16:03,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2023-12-24 17:16:03,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:16:03,653 INFO L225 Difference]: With dead ends: 701 [2023-12-24 17:16:03,653 INFO L226 Difference]: Without dead ends: 383 [2023-12-24 17:16:03,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:16:03,654 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 7 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:16:03,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 358 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:16:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-24 17:16:03,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 373. [2023-12-24 17:16:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 338 states have (on average 1.2810650887573964) internal successors, (433), 340 states have internal predecessors, (433), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-24 17:16:03,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 485 transitions. [2023-12-24 17:16:03,685 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 485 transitions. Word has length 59 [2023-12-24 17:16:03,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:16:03,685 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 485 transitions. [2023-12-24 17:16:03,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-24 17:16:03,685 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 485 transitions. [2023-12-24 17:16:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-24 17:16:03,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:16:03,686 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:16:03,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 17:16:03,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:03,909 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:16:03,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:16:03,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1400070054, now seen corresponding path program 1 times [2023-12-24 17:16:03,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:16:03,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648815466] [2023-12-24 17:16:03,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:16:03,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:03,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:16:03,911 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:16:03,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 17:16:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:16:04,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 17:16:04,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:16:04,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 17:16:05,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:16:05,073 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 188 treesize of output 118 [2023-12-24 17:16:05,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:16:05,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 253 treesize of output 133 [2023-12-24 17:16:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-24 17:16:05,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:16:05,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:16:05,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648815466] [2023-12-24 17:16:05,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648815466] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:16:05,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1613406784] [2023-12-24 17:16:05,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:16:05,335 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:16:05,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:16:05,336 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:16:05,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-24 17:16:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:16:06,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 17:16:06,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:16:06,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 17:16:12,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 17:16:12,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:16:12,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 118 [2023-12-24 17:16:12,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 269 treesize of output 141 [2023-12-24 17:16:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-24 17:16:12,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:16:12,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1613406784] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:16:12,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:16:12,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2023-12-24 17:16:12,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028620998] [2023-12-24 17:16:12,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:16:12,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 17:16:12,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:16:12,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 17:16:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=531, Unknown=1, NotChecked=0, Total=650 [2023-12-24 17:16:12,673 INFO L87 Difference]: Start difference. First operand 373 states and 485 transitions. Second operand has 23 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-24 17:16:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:16:14,837 INFO L93 Difference]: Finished difference Result 672 states and 865 transitions. [2023-12-24 17:16:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 17:16:14,838 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 59 [2023-12-24 17:16:14,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:16:14,840 INFO L225 Difference]: With dead ends: 672 [2023-12-24 17:16:14,840 INFO L226 Difference]: Without dead ends: 394 [2023-12-24 17:16:14,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=396, Invalid=1409, Unknown=1, NotChecked=0, Total=1806 [2023-12-24 17:16:14,841 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 296 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:16:14,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 931 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 17:16:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-12-24 17:16:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 211. [2023-12-24 17:16:14,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 189 states have (on average 1.2592592592592593) internal successors, (238), 189 states have internal predecessors, (238), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:16:14,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 268 transitions. [2023-12-24 17:16:14,866 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 268 transitions. Word has length 59 [2023-12-24 17:16:14,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:16:14,866 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 268 transitions. [2023-12-24 17:16:14,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-24 17:16:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 268 transitions. [2023-12-24 17:16:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 17:16:14,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:16:14,867 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:16:14,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-24 17:16:15,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 17:16:15,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:15,272 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:16:15,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:16:15,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1550459167, now seen corresponding path program 1 times [2023-12-24 17:16:15,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:16:15,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891524220] [2023-12-24 17:16:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:16:15,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:15,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:16:15,274 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:16:15,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 17:16:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:16:15,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 17:16:15,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:16:16,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:16:16,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 54 [2023-12-24 17:16:16,537 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 22 [2023-12-24 17:16:16,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 17:16:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 115 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:16:16,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:16:17,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:16:17,131 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 35 treesize of output 38 [2023-12-24 17:16:17,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 99 [2023-12-24 17:16:18,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:16:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891524220] [2023-12-24 17:16:18,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891524220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:16:18,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1395685919] [2023-12-24 17:16:18,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:16:18,621 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:16:18,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:16:18,622 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:16:18,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-24 17:16:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:16:19,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-24 17:16:19,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:16:22,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:16:22,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:16:22,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:16:22,729 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 37 treesize of output 29 [2023-12-24 17:16:24,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 17:16:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 23 proven. 140 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-24 17:16:27,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:16:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-12-24 17:16:28,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1395685919] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:16:28,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:16:28,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 13] total 29 [2023-12-24 17:16:28,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630511998] [2023-12-24 17:16:28,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:16:28,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:16:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:16:28,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:16:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1260, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 17:16:28,473 INFO L87 Difference]: Start difference. First operand 211 states and 268 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:16:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:16:29,053 INFO L93 Difference]: Finished difference Result 435 states and 548 transitions. [2023-12-24 17:16:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 17:16:29,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 117 [2023-12-24 17:16:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:16:29,055 INFO L225 Difference]: With dead ends: 435 [2023-12-24 17:16:29,055 INFO L226 Difference]: Without dead ends: 356 [2023-12-24 17:16:29,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 396 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 17:16:29,056 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 217 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:16:29,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 549 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:16:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-12-24 17:16:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 230. [2023-12-24 17:16:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 208 states have (on average 1.2836538461538463) internal successors, (267), 208 states have internal predecessors, (267), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:16:29,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 297 transitions. [2023-12-24 17:16:29,082 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 297 transitions. Word has length 117 [2023-12-24 17:16:29,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:16:29,082 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 297 transitions. [2023-12-24 17:16:29,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:16:29,083 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 297 transitions. [2023-12-24 17:16:29,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 17:16:29,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:16:29,084 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:16:29,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 17:16:29,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-24 17:16:29,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 17:16:29,492 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:16:29,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:16:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash 732810717, now seen corresponding path program 1 times [2023-12-24 17:16:29,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:16:29,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208405595] [2023-12-24 17:16:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:16:29,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:29,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:16:29,494 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:16:29,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 17:16:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:16:29,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 17:16:29,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:16:30,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:16:30,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 54 [2023-12-24 17:16:30,822 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 22 [2023-12-24 17:16:30,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 17:16:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 115 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:16:31,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:16:31,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:16:31,412 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 35 treesize of output 38 [2023-12-24 17:16:31,910 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 115 treesize of output 99 [2023-12-24 17:16:33,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:16:33,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208405595] [2023-12-24 17:16:33,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208405595] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:16:33,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1935778226] [2023-12-24 17:16:33,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:16:33,161 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:16:33,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:16:33,161 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:16:33,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-24 17:16:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:16:34,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 17:16:34,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:16:35,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:16:35,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-12-24 17:16:35,833 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 13 treesize of output 9 [2023-12-24 17:16:36,264 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 22 [2023-12-24 17:16:36,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 17:16:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 115 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:16:36,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:16:36,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-12-24 17:16:36,849 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 115 treesize of output 99 [2023-12-24 17:16:37,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1935778226] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:16:37,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:16:37,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2023-12-24 17:16:37,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370601417] [2023-12-24 17:16:37,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:16:37,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 17:16:37,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:16:37,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 17:16:37,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2023-12-24 17:16:37,664 INFO L87 Difference]: Start difference. First operand 230 states and 297 transitions. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 17:16:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:16:41,339 INFO L93 Difference]: Finished difference Result 516 states and 656 transitions. [2023-12-24 17:16:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 17:16:41,340 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2023-12-24 17:16:41,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:16:41,341 INFO L225 Difference]: With dead ends: 516 [2023-12-24 17:16:41,341 INFO L226 Difference]: Without dead ends: 346 [2023-12-24 17:16:41,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 372 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 17:16:41,342 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 474 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:16:41,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 879 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 17:16:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-24 17:16:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 259. [2023-12-24 17:16:41,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 237 states have (on average 1.2658227848101267) internal successors, (300), 237 states have internal predecessors, (300), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:16:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 330 transitions. [2023-12-24 17:16:41,383 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 330 transitions. Word has length 117 [2023-12-24 17:16:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:16:41,384 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 330 transitions. [2023-12-24 17:16:41,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 17:16:41,384 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 330 transitions. [2023-12-24 17:16:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 17:16:41,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:16:41,385 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:16:41,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2023-12-24 17:16:41,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 17:16:41,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:41,794 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:16:41,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:16:41,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1974232989, now seen corresponding path program 1 times [2023-12-24 17:16:41,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:16:41,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689222542] [2023-12-24 17:16:41,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:16:41,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:16:41,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:16:41,796 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:16:41,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 17:16:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:16:42,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 17:16:42,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:16:43,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:16:43,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:16:44,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 55 [2023-12-24 17:16:44,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 17:16:44,492 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 54 treesize of output 42 [2023-12-24 17:16:44,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:16:44,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 32 [2023-12-24 17:16:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 12 proven. 123 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:16:44,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:17:29,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:17:29,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689222542] [2023-12-24 17:17:29,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689222542] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:17:29,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1822665562] [2023-12-24 17:17:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:17:29,013 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:17:29,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:17:29,014 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:17:29,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-24 17:17:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:17:29,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 17:17:29,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:17:34,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:17:34,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:17:47,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 50 [2023-12-24 17:17:50,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 17:18:12,083 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 [2023-12-24 17:18:12,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:18:12,117 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 48 treesize of output 32 [2023-12-24 17:18:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 12 proven. 123 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:18:13,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:18:13,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 54 [2023-12-24 17:18:23,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1822665562] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:18:23,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:18:23,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2023-12-24 17:18:23,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256949178] [2023-12-24 17:18:23,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:18:23,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 17:18:23,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:18:23,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 17:18:23,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=869, Unknown=10, NotChecked=0, Total=992 [2023-12-24 17:18:23,775 INFO L87 Difference]: Start difference. First operand 259 states and 330 transitions. Second operand has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 22 states have internal predecessors, (134), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 17:19:08,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:19:08,921 INFO L93 Difference]: Finished difference Result 567 states and 725 transitions. [2023-12-24 17:19:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 17:19:08,923 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 22 states have internal predecessors, (134), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 117 [2023-12-24 17:19:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:19:08,924 INFO L225 Difference]: With dead ends: 567 [2023-12-24 17:19:08,924 INFO L226 Difference]: Without dead ends: 469 [2023-12-24 17:19:08,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 252 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 121.8s TimeCoverageRelationStatistics Valid=231, Invalid=1474, Unknown=17, NotChecked=0, Total=1722 [2023-12-24 17:19:08,925 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 463 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:19:08,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1700 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-12-24 17:19:08,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-12-24 17:19:08,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 280. [2023-12-24 17:19:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 258 states have (on average 1.2790697674418605) internal successors, (330), 258 states have internal predecessors, (330), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:19:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 360 transitions. [2023-12-24 17:19:08,958 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 360 transitions. Word has length 117 [2023-12-24 17:19:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:19:08,958 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 360 transitions. [2023-12-24 17:19:08,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 22 states have internal predecessors, (134), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 17:19:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 360 transitions. [2023-12-24 17:19:08,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 17:19:08,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:19:08,959 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:19:08,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 17:19:09,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-12-24 17:19:09,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 17:19:09,370 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:19:09,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:19:09,371 INFO L85 PathProgramCache]: Analyzing trace with hash 168794655, now seen corresponding path program 1 times [2023-12-24 17:19:09,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:19:09,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808408573] [2023-12-24 17:19:09,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:19:09,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:19:09,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:19:09,372 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:19:09,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 17:19:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:19:09,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 17:19:09,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:19:13,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:19:13,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:19:17,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 90 [2023-12-24 17:19:18,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 100 [2023-12-24 17:19:19,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:19:19,761 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 92 treesize of output 80 [2023-12-24 17:19:19,772 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 93 treesize of output 77 [2023-12-24 17:19:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 12 proven. 123 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:19:20,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:19:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-24 17:19:21,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:19:21,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808408573] [2023-12-24 17:19:21,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808408573] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:19:21,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:19:21,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 17:19:21,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868359651] [2023-12-24 17:19:21,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:19:21,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:19:21,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:19:21,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:19:21,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-24 17:19:21,768 INFO L87 Difference]: Start difference. First operand 280 states and 360 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:19:23,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:19:23,993 INFO L93 Difference]: Finished difference Result 457 states and 582 transitions. [2023-12-24 17:19:24,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:19:24,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 117 [2023-12-24 17:19:24,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:19:24,001 INFO L225 Difference]: With dead ends: 457 [2023-12-24 17:19:24,001 INFO L226 Difference]: Without dead ends: 359 [2023-12-24 17:19:24,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:19:24,002 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 67 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 17:19:24,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 371 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 17:19:24,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-24 17:19:24,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 262. [2023-12-24 17:19:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 240 states have (on average 1.2666666666666666) internal successors, (304), 240 states have internal predecessors, (304), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:19:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 334 transitions. [2023-12-24 17:19:24,035 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 334 transitions. Word has length 117 [2023-12-24 17:19:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:19:24,036 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 334 transitions. [2023-12-24 17:19:24,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:19:24,036 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 334 transitions. [2023-12-24 17:19:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 17:19:24,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:19:24,038 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:19:24,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 17:19:24,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:19:24,247 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:19:24,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:19:24,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1825456985, now seen corresponding path program 1 times [2023-12-24 17:19:24,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:19:24,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166508164] [2023-12-24 17:19:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:19:24,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:19:24,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:19:24,249 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:19:24,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 17:19:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:19:24,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 17:19:24,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:19:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-24 17:19:24,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:19:24,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:19:24,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166508164] [2023-12-24 17:19:24,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166508164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:19:24,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:19:24,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 17:19:24,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310118618] [2023-12-24 17:19:24,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:19:24,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 17:19:24,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:19:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 17:19:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:19:24,827 INFO L87 Difference]: Start difference. First operand 262 states and 334 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:19:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:19:24,965 INFO L93 Difference]: Finished difference Result 574 states and 734 transitions. [2023-12-24 17:19:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 17:19:24,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 119 [2023-12-24 17:19:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:19:24,966 INFO L225 Difference]: With dead ends: 574 [2023-12-24 17:19:24,967 INFO L226 Difference]: Without dead ends: 313 [2023-12-24 17:19:24,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:19:24,969 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 34 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:19:24,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 169 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:19:24,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-24 17:19:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 256. [2023-12-24 17:19:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 234 states have (on average 1.2820512820512822) internal successors, (300), 234 states have internal predecessors, (300), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:19:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 330 transitions. [2023-12-24 17:19:25,001 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 330 transitions. Word has length 119 [2023-12-24 17:19:25,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:19:25,002 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 330 transitions. [2023-12-24 17:19:25,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:19:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 330 transitions. [2023-12-24 17:19:25,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 17:19:25,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:19:25,003 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:19:25,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 17:19:25,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:19:25,211 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:19:25,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:19:25,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1649356235, now seen corresponding path program 1 times [2023-12-24 17:19:25,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:19:25,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515533676] [2023-12-24 17:19:25,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:19:25,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:19:25,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:19:25,213 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:19:25,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 17:19:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:19:25,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 17:19:25,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:19:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-12-24 17:19:25,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:19:25,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:19:25,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515533676] [2023-12-24 17:19:25,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515533676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:19:25,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:19:25,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:19:25,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672173977] [2023-12-24 17:19:25,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:19:25,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:19:25,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:19:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:19:25,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 17:19:25,856 INFO L87 Difference]: Start difference. First operand 256 states and 330 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:19:26,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:19:26,122 INFO L93 Difference]: Finished difference Result 416 states and 541 transitions. [2023-12-24 17:19:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:19:26,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 119 [2023-12-24 17:19:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:19:26,135 INFO L225 Difference]: With dead ends: 416 [2023-12-24 17:19:26,135 INFO L226 Difference]: Without dead ends: 273 [2023-12-24 17:19:26,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:19:26,140 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 56 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:19:26,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 255 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:19:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-24 17:19:26,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 256. [2023-12-24 17:19:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 234 states have (on average 1.2777777777777777) internal successors, (299), 234 states have internal predecessors, (299), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:19:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 329 transitions. [2023-12-24 17:19:26,175 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 329 transitions. Word has length 119 [2023-12-24 17:19:26,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:19:26,175 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 329 transitions. [2023-12-24 17:19:26,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:19:26,175 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 329 transitions. [2023-12-24 17:19:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 17:19:26,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:19:26,176 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:19:26,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-24 17:19:26,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:19:26,385 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:19:26,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:19:26,385 INFO L85 PathProgramCache]: Analyzing trace with hash 442687826, now seen corresponding path program 1 times [2023-12-24 17:19:26,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:19:26,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059539154] [2023-12-24 17:19:26,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:19:26,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:19:26,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:19:26,387 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:19:26,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 17:19:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:19:26,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 17:19:26,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:19:29,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:19:29,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:19:30,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:19:31,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2023-12-24 17:19:32,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2023-12-24 17:19:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 12 proven. 121 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:19:32,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:19:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-24 17:19:32,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:19:32,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059539154] [2023-12-24 17:19:32,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059539154] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:19:32,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:19:32,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2023-12-24 17:19:32,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153070886] [2023-12-24 17:19:32,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:19:32,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:19:32,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:19:32,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:19:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:19:32,659 INFO L87 Difference]: Start difference. First operand 256 states and 329 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:19:33,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:19:33,089 INFO L93 Difference]: Finished difference Result 594 states and 748 transitions. [2023-12-24 17:19:33,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:19:33,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 119 [2023-12-24 17:19:33,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:19:33,091 INFO L225 Difference]: With dead ends: 594 [2023-12-24 17:19:33,091 INFO L226 Difference]: Without dead ends: 451 [2023-12-24 17:19:33,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-12-24 17:19:33,091 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 143 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:19:33,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 216 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 17:19:33,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-12-24 17:19:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 264. [2023-12-24 17:19:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 242 states have (on average 1.2685950413223142) internal successors, (307), 242 states have internal predecessors, (307), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:19:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 337 transitions. [2023-12-24 17:19:33,125 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 337 transitions. Word has length 119 [2023-12-24 17:19:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:19:33,125 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 337 transitions. [2023-12-24 17:19:33,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:19:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 337 transitions. [2023-12-24 17:19:33,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 17:19:33,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:19:33,126 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:19:33,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 17:19:33,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:19:33,334 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:19:33,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:19:33,335 INFO L85 PathProgramCache]: Analyzing trace with hash -909213904, now seen corresponding path program 1 times [2023-12-24 17:19:33,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:19:33,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393194246] [2023-12-24 17:19:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:19:33,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:19:33,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:19:33,336 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:19:33,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 17:19:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:19:33,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 17:19:33,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:19:33,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:19:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-24 17:19:34,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:19:34,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:19:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393194246] [2023-12-24 17:19:34,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393194246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:19:34,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:19:34,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:19:34,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610126903] [2023-12-24 17:19:34,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:19:34,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:19:34,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:19:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:19:34,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:19:34,077 INFO L87 Difference]: Start difference. First operand 264 states and 337 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:19:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:19:34,544 INFO L93 Difference]: Finished difference Result 296 states and 374 transitions. [2023-12-24 17:19:34,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:19:34,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 121 [2023-12-24 17:19:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:19:34,545 INFO L225 Difference]: With dead ends: 296 [2023-12-24 17:19:34,545 INFO L226 Difference]: Without dead ends: 294 [2023-12-24 17:19:34,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:19:34,546 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 66 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:19:34,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 308 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 17:19:34,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-24 17:19:34,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 266. [2023-12-24 17:19:34,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 244 states have (on average 1.2663934426229508) internal successors, (309), 244 states have internal predecessors, (309), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:19:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 339 transitions. [2023-12-24 17:19:34,578 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 339 transitions. Word has length 121 [2023-12-24 17:19:34,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:19:34,578 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 339 transitions. [2023-12-24 17:19:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:19:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 339 transitions. [2023-12-24 17:19:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 17:19:34,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:19:34,579 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:19:34,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 17:19:34,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:19:34,788 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:19:34,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:19:34,788 INFO L85 PathProgramCache]: Analyzing trace with hash -909154322, now seen corresponding path program 1 times [2023-12-24 17:19:34,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:19:34,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126996984] [2023-12-24 17:19:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:19:34,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:19:34,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:19:34,790 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:19:34,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 17:19:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:19:35,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 17:19:35,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:19:38,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:19:39,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:19:43,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2023-12-24 17:19:43,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 17:19:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 19 proven. 118 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:19:44,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:19:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-24 17:19:51,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:19:51,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126996984] [2023-12-24 17:19:51,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126996984] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:19:51,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:19:51,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 23 [2023-12-24 17:19:51,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220106740] [2023-12-24 17:19:51,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:19:51,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 17:19:51,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:19:51,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 17:19:51,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2023-12-24 17:19:51,099 INFO L87 Difference]: Start difference. First operand 266 states and 339 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:20:01,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:20:01,122 INFO L93 Difference]: Finished difference Result 557 states and 707 transitions. [2023-12-24 17:20:01,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 17:20:01,127 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 121 [2023-12-24 17:20:01,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:20:01,128 INFO L225 Difference]: With dead ends: 557 [2023-12-24 17:20:01,128 INFO L226 Difference]: Without dead ends: 404 [2023-12-24 17:20:01,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=207, Invalid=915, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 17:20:01,129 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 190 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-24 17:20:01,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 882 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-24 17:20:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-12-24 17:20:01,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 294. [2023-12-24 17:20:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 272 states have (on average 1.2536764705882353) internal successors, (341), 272 states have internal predecessors, (341), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:20:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 371 transitions. [2023-12-24 17:20:01,163 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 371 transitions. Word has length 121 [2023-12-24 17:20:01,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:20:01,163 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 371 transitions. [2023-12-24 17:20:01,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:20:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 371 transitions. [2023-12-24 17:20:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 17:20:01,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:20:01,164 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:20:01,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 17:20:01,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:20:01,373 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:20:01,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:20:01,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1718500948, now seen corresponding path program 1 times [2023-12-24 17:20:01,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:20:01,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159228468] [2023-12-24 17:20:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:20:01,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:20:01,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:20:01,375 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:20:01,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 17:20:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:20:01,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 17:20:01,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:20:05,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:20:05,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:20:10,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2023-12-24 17:20:10,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 17:20:11,366 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 55 treesize of output 39 [2023-12-24 17:20:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 19 proven. 118 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:20:11,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:20:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-24 17:20:24,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:20:24,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159228468] [2023-12-24 17:20:24,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159228468] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:20:24,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:20:24,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 21 [2023-12-24 17:20:24,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778902210] [2023-12-24 17:20:24,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:20:24,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 17:20:24,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:20:24,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 17:20:24,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-24 17:20:24,678 INFO L87 Difference]: Start difference. First operand 294 states and 371 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:20:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:20:50,781 INFO L93 Difference]: Finished difference Result 589 states and 744 transitions. [2023-12-24 17:20:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 17:20:50,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 121 [2023-12-24 17:20:50,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:20:50,790 INFO L225 Difference]: With dead ends: 589 [2023-12-24 17:20:50,790 INFO L226 Difference]: Without dead ends: 413 [2023-12-24 17:20:50,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2023-12-24 17:20:50,791 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 212 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:20:50,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 710 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2023-12-24 17:20:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-24 17:20:50,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 294. [2023-12-24 17:20:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 272 states have (on average 1.25) internal successors, (340), 272 states have internal predecessors, (340), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:20:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 370 transitions. [2023-12-24 17:20:50,828 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 370 transitions. Word has length 121 [2023-12-24 17:20:50,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:20:50,828 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 370 transitions. [2023-12-24 17:20:50,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:20:50,829 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 370 transitions. [2023-12-24 17:20:50,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 17:20:50,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:20:50,829 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:20:50,840 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 (32)] Forceful destruction successful, exit code 0 [2023-12-24 17:20:51,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:20:51,038 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:20:51,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:20:51,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1043167828, now seen corresponding path program 1 times [2023-12-24 17:20:51,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:20:51,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478809226] [2023-12-24 17:20:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:20:51,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:20:51,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:20:51,040 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:20:51,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 17:20:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:20:51,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 17:20:51,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:20:55,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:20:55,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:20:57,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:20:58,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-12-24 17:20:59,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 17:21:00,006 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 106 treesize of output 90 [2023-12-24 17:21:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 2 proven. 135 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:21:00,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:21:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-24 17:21:03,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:21:03,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478809226] [2023-12-24 17:21:03,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478809226] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:21:03,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:21:03,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2023-12-24 17:21:03,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843615068] [2023-12-24 17:21:03,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:21:03,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:21:03,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:21:03,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:21:03,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-12-24 17:21:03,318 INFO L87 Difference]: Start difference. First operand 294 states and 370 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:21:08,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:21:08,282 INFO L93 Difference]: Finished difference Result 566 states and 717 transitions. [2023-12-24 17:21:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 17:21:08,286 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 121 [2023-12-24 17:21:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:21:08,288 INFO L225 Difference]: With dead ends: 566 [2023-12-24 17:21:08,288 INFO L226 Difference]: Without dead ends: 390 [2023-12-24 17:21:08,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2023-12-24 17:21:08,289 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 136 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:21:08,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 726 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 17:21:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-24 17:21:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 310. [2023-12-24 17:21:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 288 states have (on average 1.2430555555555556) internal successors, (358), 288 states have internal predecessors, (358), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:21:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 388 transitions. [2023-12-24 17:21:08,328 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 388 transitions. Word has length 121 [2023-12-24 17:21:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:21:08,328 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 388 transitions. [2023-12-24 17:21:08,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:21:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 388 transitions. [2023-12-24 17:21:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 17:21:08,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:21:08,329 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:21:08,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-24 17:21:08,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:21:08,543 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:21:08,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:21:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1852514454, now seen corresponding path program 1 times [2023-12-24 17:21:08,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:21:08,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412692282] [2023-12-24 17:21:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:21:08,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:21:08,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:21:08,545 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:21:08,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 17:21:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:21:08,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 17:21:08,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:21:12,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:21:13,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:21:14,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:21:16,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-12-24 17:21:17,112 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 [2023-12-24 17:21:18,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2023-12-24 17:21:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 5 proven. 132 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:21:18,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:21:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-24 17:21:21,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:21:21,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412692282] [2023-12-24 17:21:21,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412692282] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:21:21,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:21:21,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2023-12-24 17:21:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193306296] [2023-12-24 17:21:21,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:21:21,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:21:21,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:21:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:21:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-12-24 17:21:21,466 INFO L87 Difference]: Start difference. First operand 310 states and 388 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:21:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:21:25,041 INFO L93 Difference]: Finished difference Result 581 states and 734 transitions. [2023-12-24 17:21:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 17:21:25,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 121 [2023-12-24 17:21:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:21:25,045 INFO L225 Difference]: With dead ends: 581 [2023-12-24 17:21:25,045 INFO L226 Difference]: Without dead ends: 389 [2023-12-24 17:21:25,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2023-12-24 17:21:25,046 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 95 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:21:25,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 512 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 17:21:25,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-24 17:21:25,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 296. [2023-12-24 17:21:25,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 274 states have (on average 1.2518248175182483) internal successors, (343), 274 states have internal predecessors, (343), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:21:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 373 transitions. [2023-12-24 17:21:25,091 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 373 transitions. Word has length 121 [2023-12-24 17:21:25,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:21:25,091 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 373 transitions. [2023-12-24 17:21:25,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:21:25,091 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 373 transitions. [2023-12-24 17:21:25,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 17:21:25,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:21:25,092 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:21:25,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 17:21:25,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:21:25,300 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:21:25,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:21:25,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1692545682, now seen corresponding path program 1 times [2023-12-24 17:21:25,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:21:25,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602866104] [2023-12-24 17:21:25,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:21:25,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:21:25,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:21:25,302 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:21:25,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 17:21:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:21:25,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 17:21:25,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:21:29,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:21:29,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:21:30,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:21:30,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:21:33,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 17:21:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 5 proven. 132 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:21:33,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:21:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-24 17:21:34,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:21:34,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602866104] [2023-12-24 17:21:34,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602866104] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:21:34,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:21:34,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 17:21:34,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146307697] [2023-12-24 17:21:34,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:21:34,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:21:34,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:21:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:21:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:21:34,885 INFO L87 Difference]: Start difference. First operand 296 states and 373 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:21:36,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:21:36,419 INFO L93 Difference]: Finished difference Result 550 states and 700 transitions. [2023-12-24 17:21:36,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:21:36,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 121 [2023-12-24 17:21:36,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:21:36,422 INFO L225 Difference]: With dead ends: 550 [2023-12-24 17:21:36,422 INFO L226 Difference]: Without dead ends: 367 [2023-12-24 17:21:36,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:21:36,424 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 90 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:21:36,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 289 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 17:21:36,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-12-24 17:21:36,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 339. [2023-12-24 17:21:36,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 317 states have (on average 1.2712933753943219) internal successors, (403), 317 states have internal predecessors, (403), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:21:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 433 transitions. [2023-12-24 17:21:36,458 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 433 transitions. Word has length 121 [2023-12-24 17:21:36,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:21:36,458 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 433 transitions. [2023-12-24 17:21:36,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:21:36,458 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 433 transitions. [2023-12-24 17:21:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 17:21:36,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:21:36,459 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:21:36,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 17:21:36,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:21:36,668 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:21:36,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:21:36,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1793074988, now seen corresponding path program 1 times [2023-12-24 17:21:36,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:21:36,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882950310] [2023-12-24 17:21:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:21:36,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:21:36,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:21:36,670 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:21:36,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 17:21:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:21:37,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 17:21:37,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:21:38,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:21:40,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 17:21:41,681 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 39 treesize of output 23 [2023-12-24 17:21:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 2 proven. 134 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 17:21:42,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:21:44,651 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-24 17:21:44,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:21:44,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882950310] [2023-12-24 17:21:44,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882950310] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:21:44,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:21:44,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 23 [2023-12-24 17:21:44,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263945495] [2023-12-24 17:21:44,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:21:44,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:21:44,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:21:44,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:21:44,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-12-24 17:21:44,653 INFO L87 Difference]: Start difference. First operand 339 states and 433 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:21:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:21:48,376 INFO L93 Difference]: Finished difference Result 614 states and 780 transitions. [2023-12-24 17:21:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 17:21:48,378 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 121 [2023-12-24 17:21:48,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:21:48,379 INFO L225 Difference]: With dead ends: 614 [2023-12-24 17:21:48,379 INFO L226 Difference]: Without dead ends: 388 [2023-12-24 17:21:48,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2023-12-24 17:21:48,380 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 140 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:21:48,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1007 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 17:21:48,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-24 17:21:48,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 348. [2023-12-24 17:21:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 326 states have (on average 1.2638036809815951) internal successors, (412), 326 states have internal predecessors, (412), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:21:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 442 transitions. [2023-12-24 17:21:48,413 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 442 transitions. Word has length 121 [2023-12-24 17:21:48,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:21:48,413 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 442 transitions. [2023-12-24 17:21:48,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:21:48,413 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 442 transitions. [2023-12-24 17:21:48,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 17:21:48,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:21:48,414 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:21:48,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-24 17:21:48,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:21:48,623 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:21:48,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:21:48,623 INFO L85 PathProgramCache]: Analyzing trace with hash 70713580, now seen corresponding path program 1 times [2023-12-24 17:21:48,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:21:48,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816833890] [2023-12-24 17:21:48,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:21:48,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:21:48,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:21:48,625 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:21:48,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-24 17:21:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:21:49,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:21:49,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:21:50,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:21:52,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 17:21:53,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 17:21:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 2 proven. 134 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 17:21:53,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:21:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-24 17:21:54,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:21:54,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816833890] [2023-12-24 17:21:54,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816833890] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:21:54,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:21:54,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 19 [2023-12-24 17:21:54,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415877437] [2023-12-24 17:21:54,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:21:54,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:21:54,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:21:54,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:21:54,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-12-24 17:21:54,752 INFO L87 Difference]: Start difference. First operand 348 states and 442 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:21:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:21:56,514 INFO L93 Difference]: Finished difference Result 607 states and 772 transitions. [2023-12-24 17:21:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 17:21:56,516 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 121 [2023-12-24 17:21:56,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:21:56,517 INFO L225 Difference]: With dead ends: 607 [2023-12-24 17:21:56,517 INFO L226 Difference]: Without dead ends: 372 [2023-12-24 17:21:56,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2023-12-24 17:21:56,518 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 58 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:21:56,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 865 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 17:21:56,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-12-24 17:21:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 339. [2023-12-24 17:21:56,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 317 states have (on average 1.2712933753943219) internal successors, (403), 317 states have internal predecessors, (403), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:21:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 433 transitions. [2023-12-24 17:21:56,551 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 433 transitions. Word has length 121 [2023-12-24 17:21:56,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:21:56,551 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 433 transitions. [2023-12-24 17:21:56,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:21:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 433 transitions. [2023-12-24 17:21:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 17:21:56,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:21:56,553 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:21:56,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-24 17:21:56,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:21:56,761 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:21:56,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:21:56,761 INFO L85 PathProgramCache]: Analyzing trace with hash -126094979, now seen corresponding path program 1 times [2023-12-24 17:21:56,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:21:56,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984765467] [2023-12-24 17:21:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:21:56,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:21:56,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:21:56,766 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:21:56,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-24 17:21:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:21:57,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 17:21:57,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:21:58,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:21:58,574 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 54 treesize of output 42 [2023-12-24 17:21:58,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 17:21:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 10 proven. 122 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 17:21:58,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:21:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-12-24 17:21:59,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:21:59,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984765467] [2023-12-24 17:21:59,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984765467] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:21:59,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:21:59,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2023-12-24 17:21:59,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59798345] [2023-12-24 17:21:59,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:21:59,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:21:59,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:21:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:21:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:21:59,128 INFO L87 Difference]: Start difference. First operand 339 states and 433 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:22:00,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:22:00,151 INFO L93 Difference]: Finished difference Result 668 states and 848 transitions. [2023-12-24 17:22:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 17:22:00,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 122 [2023-12-24 17:22:00,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:22:00,153 INFO L225 Difference]: With dead ends: 668 [2023-12-24 17:22:00,153 INFO L226 Difference]: Without dead ends: 442 [2023-12-24 17:22:00,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-24 17:22:00,154 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 105 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:22:00,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 345 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 17:22:00,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-24 17:22:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 345. [2023-12-24 17:22:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 323 states have (on average 1.2662538699690402) internal successors, (409), 323 states have internal predecessors, (409), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:22:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 439 transitions. [2023-12-24 17:22:00,187 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 439 transitions. Word has length 122 [2023-12-24 17:22:00,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:22:00,188 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 439 transitions. [2023-12-24 17:22:00,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:22:00,188 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 439 transitions. [2023-12-24 17:22:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 17:22:00,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:22:00,189 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:22:00,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-24 17:22:00,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:22:00,396 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:22:00,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:22:00,396 INFO L85 PathProgramCache]: Analyzing trace with hash -460235433, now seen corresponding path program 1 times [2023-12-24 17:22:00,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:22:00,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029286759] [2023-12-24 17:22:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:22:00,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:22:00,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:22:00,398 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:22:00,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-24 17:22:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:22:00,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 17:22:00,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:22:03,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:22:03,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:22:04,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:22:06,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2023-12-24 17:22:06,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 17:22:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 121 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:22:06,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:22:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-24 17:22:07,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:22:07,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029286759] [2023-12-24 17:22:07,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029286759] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:22:07,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:22:07,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2023-12-24 17:22:07,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34640384] [2023-12-24 17:22:07,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:22:07,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:22:07,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:22:07,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:22:07,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:22:07,416 INFO L87 Difference]: Start difference. First operand 345 states and 439 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:22:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:22:07,995 INFO L93 Difference]: Finished difference Result 766 states and 964 transitions. [2023-12-24 17:22:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:22:07,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 124 [2023-12-24 17:22:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:22:07,997 INFO L225 Difference]: With dead ends: 766 [2023-12-24 17:22:07,997 INFO L226 Difference]: Without dead ends: 410 [2023-12-24 17:22:07,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-24 17:22:07,998 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 170 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:22:07,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 263 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 17:22:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-24 17:22:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 337. [2023-12-24 17:22:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 315 states have (on average 1.2285714285714286) internal successors, (387), 315 states have internal predecessors, (387), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:22:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 417 transitions. [2023-12-24 17:22:08,031 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 417 transitions. Word has length 124 [2023-12-24 17:22:08,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:22:08,031 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 417 transitions. [2023-12-24 17:22:08,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:22:08,031 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 417 transitions. [2023-12-24 17:22:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 17:22:08,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:22:08,032 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:22:08,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-24 17:22:08,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:22:08,241 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:22:08,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:22:08,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2007125144, now seen corresponding path program 1 times [2023-12-24 17:22:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:22:08,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846967699] [2023-12-24 17:22:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:22:08,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:22:08,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:22:08,243 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:22:08,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-24 17:22:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:22:08,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 17:22:08,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:22:09,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:22:10,117 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 54 treesize of output 42 [2023-12-24 17:22:10,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 17:22:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 10 proven. 122 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 17:22:10,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:22:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-12-24 17:22:10,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:22:10,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846967699] [2023-12-24 17:22:10,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846967699] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:22:10,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:22:10,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2023-12-24 17:22:10,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557209624] [2023-12-24 17:22:10,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:22:10,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:22:10,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:22:10,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:22:10,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:22:10,903 INFO L87 Difference]: Start difference. First operand 337 states and 417 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:22:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:22:12,471 INFO L93 Difference]: Finished difference Result 642 states and 794 transitions. [2023-12-24 17:22:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 17:22:12,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 124 [2023-12-24 17:22:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:22:12,473 INFO L225 Difference]: With dead ends: 642 [2023-12-24 17:22:12,473 INFO L226 Difference]: Without dead ends: 410 [2023-12-24 17:22:12,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-12-24 17:22:12,474 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 100 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:22:12,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 419 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 17:22:12,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-24 17:22:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 311. [2023-12-24 17:22:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 289 states have (on average 1.2283737024221453) internal successors, (355), 289 states have internal predecessors, (355), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:22:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 385 transitions. [2023-12-24 17:22:12,507 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 385 transitions. Word has length 124 [2023-12-24 17:22:12,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:22:12,508 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 385 transitions. [2023-12-24 17:22:12,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:22:12,508 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 385 transitions. [2023-12-24 17:22:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 17:22:12,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:22:12,509 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:22:12,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-24 17:22:12,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:22:12,714 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:22:12,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:22:12,715 INFO L85 PathProgramCache]: Analyzing trace with hash 852638479, now seen corresponding path program 1 times [2023-12-24 17:22:12,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:22:12,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451021341] [2023-12-24 17:22:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:22:12,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:22:12,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:22:12,716 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:22:12,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-24 17:22:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:22:13,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 17:22:13,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:22:17,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:22:17,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:22:19,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:22:20,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-12-24 17:22:21,664 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 [2023-12-24 17:22:21,815 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 83 treesize of output 71 [2023-12-24 17:22:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 2 proven. 135 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:22:22,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:22:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-24 17:22:24,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:22:24,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451021341] [2023-12-24 17:22:24,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451021341] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:22:24,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:22:24,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2023-12-24 17:22:24,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385612919] [2023-12-24 17:22:24,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:22:24,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:22:24,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:22:24,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:22:24,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:22:24,909 INFO L87 Difference]: Start difference. First operand 311 states and 385 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:22:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:22:28,061 INFO L93 Difference]: Finished difference Result 537 states and 671 transitions. [2023-12-24 17:22:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 17:22:28,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 128 [2023-12-24 17:22:28,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:22:28,063 INFO L225 Difference]: With dead ends: 537 [2023-12-24 17:22:28,063 INFO L226 Difference]: Without dead ends: 331 [2023-12-24 17:22:28,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2023-12-24 17:22:28,064 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 58 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:22:28,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 574 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 17:22:28,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-24 17:22:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 311. [2023-12-24 17:22:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 289 states have (on average 1.2283737024221453) internal successors, (355), 289 states have internal predecessors, (355), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:22:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 385 transitions. [2023-12-24 17:22:28,112 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 385 transitions. Word has length 128 [2023-12-24 17:22:28,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:22:28,113 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 385 transitions. [2023-12-24 17:22:28,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:22:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 385 transitions. [2023-12-24 17:22:28,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 17:22:28,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:22:28,115 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:22:28,125 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 (41)] Forceful destruction successful, exit code 0 [2023-12-24 17:22:28,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:22:28,328 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:22:28,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:22:28,329 INFO L85 PathProgramCache]: Analyzing trace with hash 43291853, now seen corresponding path program 1 times [2023-12-24 17:22:28,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:22:28,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776614379] [2023-12-24 17:22:28,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:22:28,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:22:28,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:22:28,331 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:22:28,332 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 (42)] Waiting until timeout for monitored process [2023-12-24 17:22:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:22:28,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 17:22:28,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:22:32,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:22:32,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:22:34,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:22:36,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-12-24 17:22:36,541 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 [2023-12-24 17:22:37,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 17:22:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 5 proven. 132 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:22:38,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:22:43,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:22:43,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776614379] [2023-12-24 17:22:43,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776614379] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:22:43,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [221097030] [2023-12-24 17:22:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:22:43,132 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:22:43,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:22:43,133 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:22:43,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2023-12-24 17:22:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:22:44,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 17:22:44,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:22:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-12-24 17:22:44,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:22:44,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [221097030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:22:44,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:22:44,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2023-12-24 17:22:44,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984096623] [2023-12-24 17:22:44,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:22:44,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 17:22:44,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:22:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 17:22:44,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-12-24 17:22:44,353 INFO L87 Difference]: Start difference. First operand 311 states and 385 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:22:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:22:44,546 INFO L93 Difference]: Finished difference Result 517 states and 649 transitions. [2023-12-24 17:22:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 17:22:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 128 [2023-12-24 17:22:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:22:44,548 INFO L225 Difference]: With dead ends: 517 [2023-12-24 17:22:44,548 INFO L226 Difference]: Without dead ends: 311 [2023-12-24 17:22:44,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-12-24 17:22:44,549 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 2 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:22:44,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 140 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:22:44,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-24 17:22:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-12-24 17:22:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 289 states have (on average 1.207612456747405) internal successors, (349), 289 states have internal predecessors, (349), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:22:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 379 transitions. [2023-12-24 17:22:44,580 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 379 transitions. Word has length 128 [2023-12-24 17:22:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:22:44,580 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 379 transitions. [2023-12-24 17:22:44,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:22:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 379 transitions. [2023-12-24 17:22:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 17:22:44,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:22:44,581 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:22:44,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2023-12-24 17:22:44,799 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 (42)] Forceful destruction successful, exit code 0 [2023-12-24 17:22:44,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:22:44,991 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:22:44,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:22:44,992 INFO L85 PathProgramCache]: Analyzing trace with hash -466181237, now seen corresponding path program 1 times [2023-12-24 17:22:44,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:22:44,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173110923] [2023-12-24 17:22:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:22:44,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:22:44,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:22:44,993 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:22:44,996 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 (44)] Waiting until timeout for monitored process [2023-12-24 17:22:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:22:45,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 17:22:45,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:22:49,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:22:49,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:22:51,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:22:52,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-12-24 17:22:53,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-12-24 17:22:54,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 17:22:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 5 proven. 132 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:22:54,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:22:59,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:22:59,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173110923] [2023-12-24 17:22:59,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173110923] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:22:59,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1289118589] [2023-12-24 17:22:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:22:59,491 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:22:59,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:22:59,492 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:22:59,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2023-12-24 17:23:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:23:00,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:23:00,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:23:00,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:23:00,892 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 91 treesize of output 31 [2023-12-24 17:23:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-24 17:23:01,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:23:01,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1289118589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:23:01,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:23:01,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2023-12-24 17:23:01,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195447073] [2023-12-24 17:23:01,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:23:01,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:23:01,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:23:01,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:23:01,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2023-12-24 17:23:01,279 INFO L87 Difference]: Start difference. First operand 311 states and 379 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:23:01,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:23:01,608 INFO L93 Difference]: Finished difference Result 555 states and 678 transitions. [2023-12-24 17:23:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 17:23:01,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 128 [2023-12-24 17:23:01,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:23:01,610 INFO L225 Difference]: With dead ends: 555 [2023-12-24 17:23:01,610 INFO L226 Difference]: Without dead ends: 349 [2023-12-24 17:23:01,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2023-12-24 17:23:01,611 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 30 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:23:01,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 239 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 17:23:01,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-24 17:23:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 311. [2023-12-24 17:23:01,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 289 states have (on average 1.1868512110726643) internal successors, (343), 289 states have internal predecessors, (343), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:23:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 373 transitions. [2023-12-24 17:23:01,643 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 373 transitions. Word has length 128 [2023-12-24 17:23:01,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:23:01,643 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 373 transitions. [2023-12-24 17:23:01,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:23:01,643 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 373 transitions. [2023-12-24 17:23:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 17:23:01,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:23:01,644 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:23:01,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2023-12-24 17:23:01,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2023-12-24 17:23:02,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:23:02,048 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:23:02,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:23:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2023347725, now seen corresponding path program 1 times [2023-12-24 17:23:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:23:02,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997101628] [2023-12-24 17:23:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:23:02,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:23:02,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:23:02,050 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:23:02,051 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 (46)] Waiting until timeout for monitored process [2023-12-24 17:23:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:23:02,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 17:23:02,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:23:06,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:23:06,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:23:08,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:23:09,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-12-24 17:23:10,196 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 22 [2023-12-24 17:23:11,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 17:23:11,973 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 5 proven. 132 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:23:11,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:23:16,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:23:16,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997101628] [2023-12-24 17:23:16,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997101628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:23:16,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [415218576] [2023-12-24 17:23:16,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:23:16,654 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:23:16,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:23:16,655 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:23:16,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2023-12-24 17:23:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:23:18,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 17:23:18,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:23:25,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:23:25,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:23:27,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2023-12-24 17:23:27,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 17:23:31,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 17:23:37,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2023-12-24 17:23:38,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 17:23:40,349 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 55 treesize of output 39 [2023-12-24 17:23:43,498 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 54 treesize of output 38 [2023-12-24 17:23:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 5 proven. 132 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:23:44,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:23:48,281 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 108 treesize of output 88 [2023-12-24 17:23:59,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [415218576] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:23:59,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:23:59,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 27 [2023-12-24 17:23:59,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358655473] [2023-12-24 17:23:59,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:23:59,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 17:23:59,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:23:59,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 17:23:59,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1418, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 17:23:59,736 INFO L87 Difference]: Start difference. First operand 311 states and 373 transitions. Second operand has 28 states, 28 states have (on average 5.75) internal successors, (161), 27 states have internal predecessors, (161), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 17:24:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:24:44,324 INFO L93 Difference]: Finished difference Result 725 states and 854 transitions. [2023-12-24 17:24:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 17:24:44,327 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.75) internal successors, (161), 27 states have internal predecessors, (161), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 128 [2023-12-24 17:24:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:24:44,328 INFO L225 Difference]: With dead ends: 725 [2023-12-24 17:24:44,328 INFO L226 Difference]: Without dead ends: 519 [2023-12-24 17:24:44,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=838, Invalid=3584, Unknown=0, NotChecked=0, Total=4422 [2023-12-24 17:24:44,330 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 375 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2023-12-24 17:24:44,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 2549 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time] [2023-12-24 17:24:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-12-24 17:24:44,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 337. [2023-12-24 17:24:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 315 states have (on average 1.1968253968253968) internal successors, (377), 315 states have internal predecessors, (377), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:24:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 407 transitions. [2023-12-24 17:24:44,373 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 407 transitions. Word has length 128 [2023-12-24 17:24:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:24:44,374 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 407 transitions. [2023-12-24 17:24:44,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.75) internal successors, (161), 27 states have internal predecessors, (161), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 17:24:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 407 transitions. [2023-12-24 17:24:44,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-24 17:24:44,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:24:44,375 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:24:44,386 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 (46)] Ended with exit code 0 [2023-12-24 17:24:44,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2023-12-24 17:24:44,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 17:24:44,782 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:24:44,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:24:44,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1981009802, now seen corresponding path program 1 times [2023-12-24 17:24:44,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:24:44,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97441989] [2023-12-24 17:24:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:24:44,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:24:44,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:24:44,784 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:24:44,785 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 (48)] Waiting until timeout for monitored process [2023-12-24 17:24:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:24:45,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 17:24:45,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:24:49,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 17:24:51,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 79 [2023-12-24 17:25:11,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 17:25:20,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 17:25:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 4 proven. 407 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-24 17:25:20,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:25:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2023-12-24 17:25:21,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:25:21,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97441989] [2023-12-24 17:25:21,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97441989] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:25:21,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:25:21,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 19 [2023-12-24 17:25:21,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101966544] [2023-12-24 17:25:21,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:25:21,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:25:21,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:25:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:25:21,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=282, Unknown=6, NotChecked=0, Total=342 [2023-12-24 17:25:21,201 INFO L87 Difference]: Start difference. First operand 337 states and 407 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:25:22,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:25:22,162 INFO L93 Difference]: Finished difference Result 550 states and 667 transitions. [2023-12-24 17:25:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:25:22,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 179 [2023-12-24 17:25:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:25:22,163 INFO L225 Difference]: With dead ends: 550 [2023-12-24 17:25:22,163 INFO L226 Difference]: Without dead ends: 344 [2023-12-24 17:25:22,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=72, Invalid=384, Unknown=6, NotChecked=0, Total=462 [2023-12-24 17:25:22,164 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 35 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:25:22,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 383 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 17:25:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-24 17:25:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 337. [2023-12-24 17:25:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 315 states have (on average 1.1968253968253968) internal successors, (377), 315 states have internal predecessors, (377), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:25:22,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 407 transitions. [2023-12-24 17:25:22,198 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 407 transitions. Word has length 179 [2023-12-24 17:25:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:25:22,198 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 407 transitions. [2023-12-24 17:25:22,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:25:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 407 transitions. [2023-12-24 17:25:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-24 17:25:22,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:25:22,199 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:25:22,209 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 (48)] Ended with exit code 0 [2023-12-24 17:25:22,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:25:22,409 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:25:22,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:25:22,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1569518915, now seen corresponding path program 1 times [2023-12-24 17:25:22,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:25:22,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696603784] [2023-12-24 17:25:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:25:22,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:25:22,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:25:22,412 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:25:22,412 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 (49)] Waiting until timeout for monitored process [2023-12-24 17:25:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:25:23,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 17:25:23,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:25:28,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 17:25:28,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:25:30,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 17:25:35,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2023-12-24 17:25:36,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-12-24 17:25:36,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-24 17:25:38,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 17:25:41,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2023-12-24 17:25:42,169 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 62 treesize of output 50 [2023-12-24 17:25:46,271 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 81 treesize of output 65 [2023-12-24 17:25:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 11 proven. 405 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 17:25:46,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:25:51,134 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2023-12-24 17:25:51,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:25:51,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696603784] [2023-12-24 17:25:51,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696603784] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:25:51,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:25:51,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 24 [2023-12-24 17:25:51,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386084478] [2023-12-24 17:25:51,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:25:51,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:25:51,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:25:51,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:25:51,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2023-12-24 17:25:51,136 INFO L87 Difference]: Start difference. First operand 337 states and 407 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:25:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:25:56,134 INFO L93 Difference]: Finished difference Result 567 states and 683 transitions. [2023-12-24 17:25:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 17:25:56,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 190 [2023-12-24 17:25:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:25:56,140 INFO L225 Difference]: With dead ends: 567 [2023-12-24 17:25:56,140 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 17:25:56,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 355 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2023-12-24 17:25:56,141 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 65 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:25:56,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 431 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-24 17:25:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 17:25:56,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 17:25:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 17:25:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 17:25:56,142 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 190 [2023-12-24 17:25:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:25:56,142 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 17:25:56,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-24 17:25:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 17:25:56,142 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 17:25:56,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 17:25:56,167 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 (49)] Ended with exit code 0 [2023-12-24 17:25:56,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:25:56,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 17:26:03,165 WARN L293 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 388 DAG size of output: 409 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:26:09,893 WARN L293 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 388 DAG size of output: 409 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:26:49,168 WARN L293 SmtUtils]: Spent 39.27s on a formula simplification. DAG size of input: 405 DAG size of output: 530 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 17:26:55,868 WARN L293 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 388 DAG size of output: 409 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-24 17:30:15,528 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 17:30:15,528 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-11-10-6-24-15-10-15-15-15-31-15-31-14-31-12-31-11-31-9-31-9-31-9-31-9-22-8-22-7-22-6-22-5-12-3-12-2-12-2-8-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-62-12-15-24-15-12-15-15-15-31-15-31-14-31-12-31-11-31-9-31-9-31-9-31-9-22-8-22-7-22-6-22-5-12-3-12-2-12-2-8-2-3-1 context. [2023-12-24 17:30:15,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 17:30:15,534 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 17:30:15,535 INFO L158 Benchmark]: Toolchain (without parser) took 871184.96ms. Allocated memory was 187.7MB in the beginning and 766.5MB in the end (delta: 578.8MB). Free memory was 138.3MB in the beginning and 450.2MB in the end (delta: -311.9MB). Peak memory consumption was 267.6MB. Max. memory is 8.0GB. [2023-12-24 17:30:15,535 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 187.7MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 17:30:15,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.14ms. Allocated memory is still 187.7MB. Free memory was 138.3MB in the beginning and 123.8MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-24 17:30:15,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.33ms. Allocated memory is still 187.7MB. Free memory was 123.8MB in the beginning and 120.8MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 17:30:15,536 INFO L158 Benchmark]: Boogie Preprocessor took 107.78ms. Allocated memory is still 187.7MB. Free memory was 120.8MB in the beginning and 115.2MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 17:30:15,536 INFO L158 Benchmark]: RCFGBuilder took 733.33ms. Allocated memory was 187.7MB in the beginning and 368.1MB in the end (delta: 180.4MB). Free memory was 115.2MB in the beginning and 313.3MB in the end (delta: -198.1MB). Peak memory consumption was 28.0MB. Max. memory is 8.0GB. [2023-12-24 17:30:15,536 INFO L158 Benchmark]: TraceAbstraction took 870021.33ms. Allocated memory was 368.1MB in the beginning and 766.5MB in the end (delta: 398.5MB). Free memory was 312.8MB in the beginning and 450.2MB in the end (delta: -137.4MB). Peak memory consumption was 260.6MB. Max. memory is 8.0GB. [2023-12-24 17:30:15,537 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 187.7MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 253.14ms. Allocated memory is still 187.7MB. Free memory was 138.3MB in the beginning and 123.8MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.33ms. Allocated memory is still 187.7MB. Free memory was 123.8MB in the beginning and 120.8MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 107.78ms. Allocated memory is still 187.7MB. Free memory was 120.8MB in the beginning and 115.2MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 733.33ms. Allocated memory was 187.7MB in the beginning and 368.1MB in the end (delta: 180.4MB). Free memory was 115.2MB in the beginning and 313.3MB in the end (delta: -198.1MB). Peak memory consumption was 28.0MB. Max. memory is 8.0GB. * TraceAbstraction took 870021.33ms. Allocated memory was 368.1MB in the beginning and 766.5MB in the end (delta: 398.5MB). Free memory was 312.8MB in the beginning and 450.2MB in the end (delta: -137.4MB). Peak memory consumption was 260.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-5-22-4-20-3-31-3-31-3-31-3-20-2-20-2-20-2-11-2-9-2-9-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-56-31-4-31-3-31-3-31-3-31-3-20-2-20-2-20-2-11-2-9-2-9-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown