/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-71.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:59:45,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:59:45,697 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 16:59:45,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:59:45,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:59:45,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:59:45,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:59:45,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:59:45,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:59:45,725 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:59:45,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:59:45,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:59:45,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:59:45,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:59:45,727 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:59:45,727 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:59:45,727 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:59:45,728 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:59:45,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:59:45,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:59:45,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:59:45,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:59:45,728 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:59:45,729 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:59:45,729 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:59:45,729 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:59:45,729 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:59:45,729 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:59:45,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:59:45,729 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:59:45,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:59:45,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:59:45,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:59:45,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:59:45,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:59:45,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:59:45,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:59:45,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:59:45,731 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:59:45,731 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:59:45,731 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:59:45,731 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:59:45,731 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:59:45,731 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:59:45,732 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:59:45,732 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:59:45,732 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:59:45,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:59:45,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:59:45,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:59:45,933 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:59:45,933 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:59:45,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-71.i [2023-12-24 16:59:46,883 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:59:47,064 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:59:47,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-71.i [2023-12-24 16:59:47,070 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb8c1a3c/7c88750d39be4a36ad4df0cb686b6fb0/FLAG7b9cbc396 [2023-12-24 16:59:47,079 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb8c1a3c/7c88750d39be4a36ad4df0cb686b6fb0 [2023-12-24 16:59:47,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:59:47,082 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:59:47,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:59:47,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:59:47,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:59:47,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcb4a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47, skipping insertion in model container [2023-12-24 16:59:47,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,120 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:59:47,220 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-71.i[916,929] [2023-12-24 16:59:47,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:59:47,269 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:59:47,278 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-71.i[916,929] [2023-12-24 16:59:47,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:59:47,311 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:59:47,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47 WrapperNode [2023-12-24 16:59:47,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:59:47,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:59:47,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:59:47,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:59:47,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,331 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,356 INFO L138 Inliner]: procedures = 33, calls = 182, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 525 [2023-12-24 16:59:47,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:59:47,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:59:47,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:59:47,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:59:47,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,375 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,407 INFO L175 MemorySlicer]: Split 138 memory accesses to 15 slices as follows [2, 11, 6, 22, 22, 22, 6, 8, 5, 3, 8, 7, 3, 6, 7]. 16 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 18 writes are split as follows [0, 4, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1]. [2023-12-24 16:59:47,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,422 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:59:47,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:59:47,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:59:47,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:59:47,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (1/1) ... [2023-12-24 16:59:47,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:59:47,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:59:47,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 16:59:47,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 16:59:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:59:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#12 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#13 [2023-12-24 16:59:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#14 [2023-12-24 16:59:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 16:59:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 16:59:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 16:59:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 16:59:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 16:59:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 16:59:47,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 16:59:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 16:59:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 16:59:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#12 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#13 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#14 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:59:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#13 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#14 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2023-12-24 16:59:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#12 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#13 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#14 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#12 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#13 [2023-12-24 16:59:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#14 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#12 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#13 [2023-12-24 16:59:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#14 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:59:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:59:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 16:59:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#12 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#13 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#14 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-24 16:59:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#12 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#13 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#14 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#12 [2023-12-24 16:59:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#13 [2023-12-24 16:59:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#14 [2023-12-24 16:59:47,661 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:59:47,663 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:59:48,272 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:59:48,334 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:59:48,335 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:59:48,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:59:48 BoogieIcfgContainer [2023-12-24 16:59:48,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:59:48,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:59:48,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:59:48,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:59:48,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:59:47" (1/3) ... [2023-12-24 16:59:48,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496f1767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:59:48, skipping insertion in model container [2023-12-24 16:59:48,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:59:47" (2/3) ... [2023-12-24 16:59:48,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496f1767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:59:48, skipping insertion in model container [2023-12-24 16:59:48,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:59:48" (3/3) ... [2023-12-24 16:59:48,348 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-71.i [2023-12-24 16:59:48,360 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:59:48,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:59:48,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:59:48,402 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;@5625d93f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:59:48,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:59:48,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 77 states have internal predecessors, (108), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 16:59:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 16:59:48,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:48,426 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:48,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:48,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:48,430 INFO L85 PathProgramCache]: Analyzing trace with hash 206066625, now seen corresponding path program 1 times [2023-12-24 16:59:48,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:48,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253717372] [2023-12-24 16:59:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:48,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:48,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:48,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:59:48,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 16:59:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:59:48,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:59:48,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:59:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-24 16:59:48,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:59:48,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:59:48,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253717372] [2023-12-24 16:59:48,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253717372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:59:48,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:59:48,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:59:48,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940510708] [2023-12-24 16:59:48,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:59:48,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:59:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:59:48,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:59:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:59:48,801 INFO L87 Difference]: Start difference. First operand has 98 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 77 states have internal predecessors, (108), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:59:48,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:59:48,854 INFO L93 Difference]: Finished difference Result 193 states and 309 transitions. [2023-12-24 16:59:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:59:48,857 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 139 [2023-12-24 16:59:48,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:59:48,864 INFO L225 Difference]: With dead ends: 193 [2023-12-24 16:59:48,864 INFO L226 Difference]: Without dead ends: 96 [2023-12-24 16:59:48,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:59:48,870 INFO L413 NwaCegarLoop]: 135 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, 135 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:59:48,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:59:48,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-24 16:59:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-24 16:59:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 75 states have internal predecessors, (101), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 16:59:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 139 transitions. [2023-12-24 16:59:48,912 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 139 transitions. Word has length 139 [2023-12-24 16:59:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:59:48,912 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 139 transitions. [2023-12-24 16:59:48,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 16:59:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 139 transitions. [2023-12-24 16:59:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 16:59:48,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:48,916 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:48,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 16:59:49,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:49,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:49,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:49,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2021636071, now seen corresponding path program 1 times [2023-12-24 16:59:49,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:49,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122354931] [2023-12-24 16:59:49,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:49,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:49,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:49,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:59:49,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 16:59:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:59:49,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:59:49,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:59:49,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 16:59:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 7 proven. 373 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:59:49,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:59:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:59:49,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:59:49,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122354931] [2023-12-24 16:59:49,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122354931] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:59:49,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:59:49,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 16:59:49,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868885216] [2023-12-24 16:59:49,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:59:49,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:59:49,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:59:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:59:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:59:49,983 INFO L87 Difference]: Start difference. First operand 96 states and 139 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:59:50,100 INFO L93 Difference]: Finished difference Result 259 states and 373 transitions. [2023-12-24 16:59:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:59:50,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 139 [2023-12-24 16:59:50,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:59:50,103 INFO L225 Difference]: With dead ends: 259 [2023-12-24 16:59:50,103 INFO L226 Difference]: Without dead ends: 164 [2023-12-24 16:59:50,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:59:50,105 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 186 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:59:50,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 492 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:59:50,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-24 16:59:50,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2023-12-24 16:59:50,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 129 states have (on average 1.3488372093023255) internal successors, (174), 130 states have internal predecessors, (174), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-24 16:59:50,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 232 transitions. [2023-12-24 16:59:50,126 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 232 transitions. Word has length 139 [2023-12-24 16:59:50,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:59:50,127 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 232 transitions. [2023-12-24 16:59:50,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 232 transitions. [2023-12-24 16:59:50,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 16:59:50,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:50,133 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:50,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-24 16:59:50,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:50,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:50,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:50,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1789100474, now seen corresponding path program 1 times [2023-12-24 16:59:50,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:50,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857937034] [2023-12-24 16:59:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:50,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:50,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:50,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:59:50,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 16:59:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:59:50,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:59:50,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:59:50,975 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 7 proven. 373 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:59:50,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:59:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:59:51,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:59:51,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857937034] [2023-12-24 16:59:51,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857937034] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:59:51,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:59:51,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 16:59:51,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093844091] [2023-12-24 16:59:51,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:59:51,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:59:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:59:51,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:59:51,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:59:51,067 INFO L87 Difference]: Start difference. First operand 161 states and 232 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:59:51,160 INFO L93 Difference]: Finished difference Result 443 states and 638 transitions. [2023-12-24 16:59:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:59:51,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 140 [2023-12-24 16:59:51,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:59:51,163 INFO L225 Difference]: With dead ends: 443 [2023-12-24 16:59:51,163 INFO L226 Difference]: Without dead ends: 283 [2023-12-24 16:59:51,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:59:51,165 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 143 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:59:51,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 705 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:59:51,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-24 16:59:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 170. [2023-12-24 16:59:51,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 138 states have (on average 1.3623188405797102) internal successors, (188), 139 states have internal predecessors, (188), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-24 16:59:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 246 transitions. [2023-12-24 16:59:51,175 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 246 transitions. Word has length 140 [2023-12-24 16:59:51,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:59:51,175 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 246 transitions. [2023-12-24 16:59:51,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:51,175 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 246 transitions. [2023-12-24 16:59:51,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 16:59:51,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:51,176 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:51,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 16:59:51,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:51,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:51,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:51,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1668996946, now seen corresponding path program 1 times [2023-12-24 16:59:51,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:51,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984167170] [2023-12-24 16:59:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:51,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:51,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:51,397 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:59:51,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 16:59:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:59:51,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:59:51,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:59:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:59:51,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:59:51,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:59:51,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984167170] [2023-12-24 16:59:51,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984167170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:59:51,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:59:51,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:59:51,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473718585] [2023-12-24 16:59:51,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:59:51,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:59:51,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:59:51,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:59:51,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:59:51,694 INFO L87 Difference]: Start difference. First operand 170 states and 246 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:51,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:59:51,761 INFO L93 Difference]: Finished difference Result 369 states and 533 transitions. [2023-12-24 16:59:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:59:51,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 141 [2023-12-24 16:59:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:59:51,765 INFO L225 Difference]: With dead ends: 369 [2023-12-24 16:59:51,765 INFO L226 Difference]: Without dead ends: 200 [2023-12-24 16:59:51,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 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 16:59:51,768 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 28 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:59:51,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 515 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:59:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-24 16:59:51,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 178. [2023-12-24 16:59:51,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 146 states have (on average 1.3424657534246576) internal successors, (196), 147 states have internal predecessors, (196), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-24 16:59:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 254 transitions. [2023-12-24 16:59:51,789 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 254 transitions. Word has length 141 [2023-12-24 16:59:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:59:51,790 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 254 transitions. [2023-12-24 16:59:51,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:51,790 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 254 transitions. [2023-12-24 16:59:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 16:59:51,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:51,791 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:51,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 16:59:51,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:51,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:51,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:51,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1611738644, now seen corresponding path program 1 times [2023-12-24 16:59:51,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:51,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505811657] [2023-12-24 16:59:51,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:51,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:51,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:51,999 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:59:52,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 16:59:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:59:52,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:59:52,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:59:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:59:52,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:59:52,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:59:52,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505811657] [2023-12-24 16:59:52,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505811657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:59:52,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:59:52,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:59:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082032675] [2023-12-24 16:59:52,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:59:52,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:59:52,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:59:52,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:59:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:59:52,210 INFO L87 Difference]: Start difference. First operand 178 states and 254 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:59:52,302 INFO L93 Difference]: Finished difference Result 379 states and 537 transitions. [2023-12-24 16:59:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:59:52,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 141 [2023-12-24 16:59:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:59:52,304 INFO L225 Difference]: With dead ends: 379 [2023-12-24 16:59:52,304 INFO L226 Difference]: Without dead ends: 202 [2023-12-24 16:59:52,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:59:52,306 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 22 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:59:52,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 638 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:59:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-24 16:59:52,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 182. [2023-12-24 16:59:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 150 states have (on average 1.3333333333333333) internal successors, (200), 151 states have internal predecessors, (200), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-24 16:59:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 258 transitions. [2023-12-24 16:59:52,316 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 258 transitions. Word has length 141 [2023-12-24 16:59:52,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:59:52,317 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 258 transitions. [2023-12-24 16:59:52,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:52,317 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 258 transitions. [2023-12-24 16:59:52,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 16:59:52,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:52,319 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:52,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 16:59:52,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:52,524 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:52,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:52,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1611679062, now seen corresponding path program 1 times [2023-12-24 16:59:52,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:52,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864670932] [2023-12-24 16:59:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:52,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:52,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:52,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:59:52,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 16:59:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:59:52,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:59:52,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:59:52,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:59:52,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:59:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-24 16:59:52,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:59:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:59:53,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:59:53,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864670932] [2023-12-24 16:59:53,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864670932] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:59:53,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:59:53,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2023-12-24 16:59:53,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983096124] [2023-12-24 16:59:53,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:59:53,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:59:53,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:59:53,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:59:53,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:59:53,067 INFO L87 Difference]: Start difference. First operand 182 states and 258 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:59:53,311 INFO L93 Difference]: Finished difference Result 441 states and 618 transitions. [2023-12-24 16:59:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:59:53,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 141 [2023-12-24 16:59:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:59:53,314 INFO L225 Difference]: With dead ends: 441 [2023-12-24 16:59:53,314 INFO L226 Difference]: Without dead ends: 260 [2023-12-24 16:59:53,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:59:53,315 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 149 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:59:53,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 830 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:59:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-24 16:59:53,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 237. [2023-12-24 16:59:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 198 states have (on average 1.3181818181818181) internal successors, (261), 200 states have internal predecessors, (261), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:59:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 331 transitions. [2023-12-24 16:59:53,322 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 331 transitions. Word has length 141 [2023-12-24 16:59:53,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:59:53,323 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 331 transitions. [2023-12-24 16:59:53,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:53,323 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 331 transitions. [2023-12-24 16:59:53,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 16:59:53,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:53,326 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:53,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 16:59:53,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:53,533 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:53,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:53,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1929151229, now seen corresponding path program 1 times [2023-12-24 16:59:53,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:53,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972401768] [2023-12-24 16:59:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:53,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:53,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:53,535 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:59:53,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 16:59:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:59:53,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:59:53,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:59:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 17 proven. 123 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 16:59:53,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:59:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:59:54,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:59:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972401768] [2023-12-24 16:59:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972401768] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:59:54,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:59:54,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 16:59:54,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857366584] [2023-12-24 16:59:54,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:59:54,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:59:54,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:59:54,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:59:54,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:59:54,066 INFO L87 Difference]: Start difference. First operand 237 states and 331 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:59:54,118 INFO L93 Difference]: Finished difference Result 598 states and 830 transitions. [2023-12-24 16:59:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:59:54,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 141 [2023-12-24 16:59:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:59:54,120 INFO L225 Difference]: With dead ends: 598 [2023-12-24 16:59:54,120 INFO L226 Difference]: Without dead ends: 362 [2023-12-24 16:59:54,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:59:54,121 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 116 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:59:54,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 557 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:59:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-24 16:59:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 247. [2023-12-24 16:59:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 208 states have (on average 1.3173076923076923) internal successors, (274), 210 states have internal predecessors, (274), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 16:59:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 344 transitions. [2023-12-24 16:59:54,129 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 344 transitions. Word has length 141 [2023-12-24 16:59:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:59:54,129 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 344 transitions. [2023-12-24 16:59:54,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 344 transitions. [2023-12-24 16:59:54,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:59:54,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:54,130 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:54,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 16:59:54,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:54,331 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:54,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash -53240966, now seen corresponding path program 1 times [2023-12-24 16:59:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:54,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269213542] [2023-12-24 16:59:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:54,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:54,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:54,333 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:59:54,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 16:59:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:59:54,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:59:54,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:59:55,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:59:55,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2023-12-24 16:59:55,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 16:59:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 13 proven. 343 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-24 16:59:55,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:59:55,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-24 16:59:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:59:55,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:59:55,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269213542] [2023-12-24 16:59:55,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269213542] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:59:55,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:59:55,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-12-24 16:59:55,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152702457] [2023-12-24 16:59:55,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:59:55,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:59:55,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:59:55,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:59:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:59:55,358 INFO L87 Difference]: Start difference. First operand 247 states and 344 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:55,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:59:55,838 INFO L93 Difference]: Finished difference Result 695 states and 952 transitions. [2023-12-24 16:59:55,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:59:55,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 142 [2023-12-24 16:59:55,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:59:55,840 INFO L225 Difference]: With dead ends: 695 [2023-12-24 16:59:55,840 INFO L226 Difference]: Without dead ends: 449 [2023-12-24 16:59:55,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:59:55,842 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 243 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:59:55,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 477 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:59:55,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-24 16:59:55,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 342. [2023-12-24 16:59:55,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 297 states have (on average 1.3164983164983164) internal successors, (391), 301 states have internal predecessors, (391), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 35 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 16:59:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 469 transitions. [2023-12-24 16:59:55,857 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 469 transitions. Word has length 142 [2023-12-24 16:59:55,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:59:55,858 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 469 transitions. [2023-12-24 16:59:55,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:55,858 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 469 transitions. [2023-12-24 16:59:55,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:59:55,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:55,859 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:55,868 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 (9)] Ended with exit code 0 [2023-12-24 16:59:56,063 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 16:59:56,064 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:56,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:56,064 INFO L85 PathProgramCache]: Analyzing trace with hash 957876284, now seen corresponding path program 1 times [2023-12-24 16:59:56,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:56,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542596554] [2023-12-24 16:59:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:56,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:56,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:56,066 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 16:59:56,070 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 16:59:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:59:56,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:59:56,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:59:56,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:59:56,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-24 16:59:56,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:59:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 13 proven. 319 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:59:56,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:59:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:59:56,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:59:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542596554] [2023-12-24 16:59:56,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542596554] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:59:56,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:59:56,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 16 [2023-12-24 16:59:56,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486394833] [2023-12-24 16:59:56,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:59:56,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:59:56,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:59:56,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:59:56,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:59:56,790 INFO L87 Difference]: Start difference. First operand 342 states and 469 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:59:57,068 INFO L93 Difference]: Finished difference Result 732 states and 996 transitions. [2023-12-24 16:59:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:59:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 142 [2023-12-24 16:59:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:59:57,070 INFO L225 Difference]: With dead ends: 732 [2023-12-24 16:59:57,071 INFO L226 Difference]: Without dead ends: 391 [2023-12-24 16:59:57,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:59:57,072 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 155 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:59:57,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 893 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:59:57,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-24 16:59:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 367. [2023-12-24 16:59:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 313 states have (on average 1.2971246006389776) internal successors, (406), 318 states have internal predecessors, (406), 45 states have call successors, (45), 8 states have call predecessors, (45), 8 states have return successors, (45), 40 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-24 16:59:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 496 transitions. [2023-12-24 16:59:57,081 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 496 transitions. Word has length 142 [2023-12-24 16:59:57,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:59:57,081 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 496 transitions. [2023-12-24 16:59:57,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 496 transitions. [2023-12-24 16:59:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:59:57,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:57,083 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:57,097 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 16:59:57,283 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 16:59:57,283 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:57,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:57,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1740088387, now seen corresponding path program 1 times [2023-12-24 16:59:57,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:57,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064923647] [2023-12-24 16:59:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:57,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:57,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:57,285 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:59:57,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 16:59:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:59:57,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:59:57,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:59:58,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 16:59:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 8 proven. 448 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-24 16:59:58,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:59:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:59:58,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:59:58,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064923647] [2023-12-24 16:59:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064923647] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:59:58,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:59:58,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2023-12-24 16:59:58,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087276206] [2023-12-24 16:59:58,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:59:58,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:59:58,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:59:58,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:59:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:59:58,762 INFO L87 Difference]: Start difference. First operand 367 states and 496 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:59:59,010 INFO L93 Difference]: Finished difference Result 916 states and 1233 transitions. [2023-12-24 16:59:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:59:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 142 [2023-12-24 16:59:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:59:59,013 INFO L225 Difference]: With dead ends: 916 [2023-12-24 16:59:59,013 INFO L226 Difference]: Without dead ends: 558 [2023-12-24 16:59:59,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:59:59,014 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 296 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:59:59,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 775 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:59:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-12-24 16:59:59,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 479. [2023-12-24 16:59:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 400 states have (on average 1.2775) internal successors, (511), 407 states have internal predecessors, (511), 67 states have call successors, (67), 11 states have call predecessors, (67), 11 states have return successors, (67), 60 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-24 16:59:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 645 transitions. [2023-12-24 16:59:59,027 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 645 transitions. Word has length 142 [2023-12-24 16:59:59,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:59:59,028 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 645 transitions. [2023-12-24 16:59:59,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:59,028 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 645 transitions. [2023-12-24 16:59:59,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:59:59,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:59,029 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:59,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 16:59:59,233 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 16:59:59,233 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:59,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash -187254472, now seen corresponding path program 1 times [2023-12-24 16:59:59,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:59,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333301061] [2023-12-24 16:59:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:59,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:59,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:59,236 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 16:59:59,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 16:59:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:59:59,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:59:59,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:59:59,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:59:59,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:59:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 16:59:59,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:59:59,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:59:59,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333301061] [2023-12-24 16:59:59,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333301061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:59:59,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:59:59,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:59:59,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50641169] [2023-12-24 16:59:59,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:59:59,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:59:59,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:59:59,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:59:59,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:59:59,482 INFO L87 Difference]: Start difference. First operand 479 states and 645 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:59:59,645 INFO L93 Difference]: Finished difference Result 1051 states and 1415 transitions. [2023-12-24 16:59:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:59:59,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 142 [2023-12-24 16:59:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:59:59,648 INFO L225 Difference]: With dead ends: 1051 [2023-12-24 16:59:59,648 INFO L226 Difference]: Without dead ends: 597 [2023-12-24 16:59:59,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:59:59,649 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 213 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:59:59,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1288 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:59:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-12-24 16:59:59,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 545. [2023-12-24 16:59:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 441 states have (on average 1.251700680272109) internal successors, (552), 448 states have internal predecessors, (552), 88 states have call successors, (88), 15 states have call predecessors, (88), 15 states have return successors, (88), 81 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-24 16:59:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 728 transitions. [2023-12-24 16:59:59,665 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 728 transitions. Word has length 142 [2023-12-24 16:59:59,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:59:59,665 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 728 transitions. [2023-12-24 16:59:59,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 16:59:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 728 transitions. [2023-12-24 16:59:59,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:59:59,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:59:59,666 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:59:59,673 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 16:59:59,871 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 16:59:59,871 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:59:59,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:59:59,872 INFO L85 PathProgramCache]: Analyzing trace with hash 823862778, now seen corresponding path program 1 times [2023-12-24 16:59:59,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:59:59,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839517663] [2023-12-24 16:59:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:59:59,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:59:59,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:59:59,873 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:59:59,874 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 17:00:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:00,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 17:00:00,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:01,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:02,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 54 [2023-12-24 17:00:02,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2023-12-24 17:00:02,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 13 proven. 539 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 17:00:02,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:02,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2023-12-24 17:00:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:03,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:03,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839517663] [2023-12-24 17:00:03,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839517663] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:03,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:03,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [24] total 32 [2023-12-24 17:00:03,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000025348] [2023-12-24 17:00:03,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:03,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:00:03,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:00:03,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2023-12-24 17:00:03,095 INFO L87 Difference]: Start difference. First operand 545 states and 728 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:04,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:04,419 INFO L93 Difference]: Finished difference Result 1282 states and 1704 transitions. [2023-12-24 17:00:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 17:00:04,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 142 [2023-12-24 17:00:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:04,426 INFO L225 Difference]: With dead ends: 1282 [2023-12-24 17:00:04,426 INFO L226 Difference]: Without dead ends: 762 [2023-12-24 17:00:04,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=177, Invalid=1383, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 17:00:04,428 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 400 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:04,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 786 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 17:00:04,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-12-24 17:00:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 565. [2023-12-24 17:00:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 459 states have (on average 1.2483660130718954) internal successors, (573), 466 states have internal predecessors, (573), 88 states have call successors, (88), 17 states have call predecessors, (88), 17 states have return successors, (88), 81 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-24 17:00:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 749 transitions. [2023-12-24 17:00:04,452 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 749 transitions. Word has length 142 [2023-12-24 17:00:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:04,452 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 749 transitions. [2023-12-24 17:00:04,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 749 transitions. [2023-12-24 17:00:04,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 17:00:04,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:04,453 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:04,468 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 17:00:04,657 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 17:00:04,658 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:04,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:04,658 INFO L85 PathProgramCache]: Analyzing trace with hash 6214328, now seen corresponding path program 1 times [2023-12-24 17:00:04,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:04,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635882121] [2023-12-24 17:00:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:04,659 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 17:00:04,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:04,660 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 17:00:04,660 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 17:00:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:04,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:00:04,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:05,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:05,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 17:00:05,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:00:05,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:05,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-24 17:00:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:06,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635882121] [2023-12-24 17:00:06,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635882121] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:06,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:06,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2023-12-24 17:00:06,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019653536] [2023-12-24 17:00:06,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:06,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:00:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:00:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-12-24 17:00:06,060 INFO L87 Difference]: Start difference. First operand 565 states and 749 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:06,548 INFO L93 Difference]: Finished difference Result 1173 states and 1556 transitions. [2023-12-24 17:00:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:00:06,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 142 [2023-12-24 17:00:06,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:06,559 INFO L225 Difference]: With dead ends: 1173 [2023-12-24 17:00:06,559 INFO L226 Difference]: Without dead ends: 633 [2023-12-24 17:00:06,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2023-12-24 17:00:06,560 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 170 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:06,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 548 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 17:00:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-12-24 17:00:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 541. [2023-12-24 17:00:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 435 states have (on average 1.2459770114942528) internal successors, (542), 442 states have internal predecessors, (542), 88 states have call successors, (88), 17 states have call predecessors, (88), 17 states have return successors, (88), 81 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-24 17:00:06,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 718 transitions. [2023-12-24 17:00:06,576 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 718 transitions. Word has length 142 [2023-12-24 17:00:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:06,576 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 718 transitions. [2023-12-24 17:00:06,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 718 transitions. [2023-12-24 17:00:06,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 17:00:06,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:06,578 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:06,584 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 17:00:06,782 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 17:00:06,782 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:06,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:06,783 INFO L85 PathProgramCache]: Analyzing trace with hash 682123567, now seen corresponding path program 1 times [2023-12-24 17:00:06,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:06,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868468332] [2023-12-24 17:00:06,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:06,783 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 17:00:06,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:06,784 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 17:00:06,786 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 17:00:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:06,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 17:00:06,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:07,120 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 19 treesize of output 15 [2023-12-24 17:00:07,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 17:00:07,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 17:00:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-24 17:00:07,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:07,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868468332] [2023-12-24 17:00:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868468332] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:07,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:07,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2023-12-24 17:00:07,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506323896] [2023-12-24 17:00:07,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:07,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:00:07,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:07,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:00:07,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:00:07,301 INFO L87 Difference]: Start difference. First operand 541 states and 718 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:07,733 INFO L93 Difference]: Finished difference Result 1279 states and 1706 transitions. [2023-12-24 17:00:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 17:00:07,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 143 [2023-12-24 17:00:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:07,736 INFO L225 Difference]: With dead ends: 1279 [2023-12-24 17:00:07,736 INFO L226 Difference]: Without dead ends: 763 [2023-12-24 17:00:07,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-12-24 17:00:07,737 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 186 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:07,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1065 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 17:00:07,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2023-12-24 17:00:07,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 623. [2023-12-24 17:00:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 510 states have (on average 1.2647058823529411) internal successors, (645), 518 states have internal predecessors, (645), 94 states have call successors, (94), 18 states have call predecessors, (94), 18 states have return successors, (94), 86 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-24 17:00:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 833 transitions. [2023-12-24 17:00:07,764 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 833 transitions. Word has length 143 [2023-12-24 17:00:07,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:07,764 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 833 transitions. [2023-12-24 17:00:07,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:07,765 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 833 transitions. [2023-12-24 17:00:07,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 17:00:07,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:07,766 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:07,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 17:00:07,971 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 17:00:07,971 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:07,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:07,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1042183336, now seen corresponding path program 1 times [2023-12-24 17:00:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:07,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234378327] [2023-12-24 17:00:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:07,972 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 17:00:07,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:07,973 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 17:00:07,974 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 17:00:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:08,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 17:00:08,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:08,537 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 27 treesize of output 15 [2023-12-24 17:00:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 7 proven. 373 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 17:00:08,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:08,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:08,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234378327] [2023-12-24 17:00:08,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234378327] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:08,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:08,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 17:00:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097686344] [2023-12-24 17:00:08,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:08,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:00:08,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:00:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:00:08,660 INFO L87 Difference]: Start difference. First operand 623 states and 833 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:08,748 INFO L93 Difference]: Finished difference Result 1425 states and 1904 transitions. [2023-12-24 17:00:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:00:08,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 143 [2023-12-24 17:00:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:08,751 INFO L225 Difference]: With dead ends: 1425 [2023-12-24 17:00:08,751 INFO L226 Difference]: Without dead ends: 827 [2023-12-24 17:00:08,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:00:08,753 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 182 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:08,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 444 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:00:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-12-24 17:00:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 683. [2023-12-24 17:00:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 558 states have (on average 1.2580645161290323) internal successors, (702), 567 states have internal predecessors, (702), 104 states have call successors, (104), 20 states have call predecessors, (104), 20 states have return successors, (104), 95 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 17:00:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 910 transitions. [2023-12-24 17:00:08,771 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 910 transitions. Word has length 143 [2023-12-24 17:00:08,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:08,771 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 910 transitions. [2023-12-24 17:00:08,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:08,771 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 910 transitions. [2023-12-24 17:00:08,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 17:00:08,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:08,772 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:08,787 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 17:00:08,977 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 17:00:08,977 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:08,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1019825518, now seen corresponding path program 1 times [2023-12-24 17:00:08,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:08,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871497418] [2023-12-24 17:00:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:08,978 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 17:00:08,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:08,980 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 17:00:08,998 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 17:00:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:09,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 17:00:09,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 7 proven. 373 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 17:00:09,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:09,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:09,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871497418] [2023-12-24 17:00:09,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871497418] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:09,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:09,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 17:00:09,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608703721] [2023-12-24 17:00:09,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:09,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:00:09,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:00:09,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:00:09,628 INFO L87 Difference]: Start difference. First operand 683 states and 910 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:09,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:09,719 INFO L93 Difference]: Finished difference Result 1414 states and 1883 transitions. [2023-12-24 17:00:09,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:00:09,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 143 [2023-12-24 17:00:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:09,722 INFO L225 Difference]: With dead ends: 1414 [2023-12-24 17:00:09,722 INFO L226 Difference]: Without dead ends: 756 [2023-12-24 17:00:09,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:00:09,724 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 162 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:09,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 602 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:00:09,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-12-24 17:00:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 683. [2023-12-24 17:00:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 558 states have (on average 1.2562724014336917) internal successors, (701), 567 states have internal predecessors, (701), 104 states have call successors, (104), 20 states have call predecessors, (104), 20 states have return successors, (104), 95 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 17:00:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 909 transitions. [2023-12-24 17:00:09,742 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 909 transitions. Word has length 143 [2023-12-24 17:00:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:09,743 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 909 transitions. [2023-12-24 17:00:09,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 909 transitions. [2023-12-24 17:00:09,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 17:00:09,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:09,744 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:09,751 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 17:00:09,948 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 17:00:09,949 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:09,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:09,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1242836, now seen corresponding path program 1 times [2023-12-24 17:00:09,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:09,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497705310] [2023-12-24 17:00:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:09,950 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 17:00:09,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:09,951 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 17:00:09,984 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 17:00:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:10,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 17:00:10,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 9 proven. 387 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 17:00:10,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:10,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:10,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497705310] [2023-12-24 17:00:10,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497705310] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:10,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:10,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 17:00:10,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990287304] [2023-12-24 17:00:10,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:10,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:00:10,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:10,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:00:10,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:00:10,583 INFO L87 Difference]: Start difference. First operand 683 states and 909 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:10,689 INFO L93 Difference]: Finished difference Result 1390 states and 1848 transitions. [2023-12-24 17:00:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:00:10,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 143 [2023-12-24 17:00:10,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:10,692 INFO L225 Difference]: With dead ends: 1390 [2023-12-24 17:00:10,692 INFO L226 Difference]: Without dead ends: 732 [2023-12-24 17:00:10,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:00:10,694 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 154 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:10,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 515 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:00:10,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2023-12-24 17:00:10,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 679. [2023-12-24 17:00:10,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 553 states have (on average 1.2531645569620253) internal successors, (693), 562 states have internal predecessors, (693), 104 states have call successors, (104), 21 states have call predecessors, (104), 21 states have return successors, (104), 95 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 17:00:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 901 transitions. [2023-12-24 17:00:10,712 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 901 transitions. Word has length 143 [2023-12-24 17:00:10,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:10,712 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 901 transitions. [2023-12-24 17:00:10,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:10,712 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 901 transitions. [2023-12-24 17:00:10,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 17:00:10,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:10,713 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:10,720 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 17:00:10,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:00:10,918 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:10,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:10,919 INFO L85 PathProgramCache]: Analyzing trace with hash -708100914, now seen corresponding path program 1 times [2023-12-24 17:00:10,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:10,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881557430] [2023-12-24 17:00:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:10,919 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 17:00:10,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:10,920 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:00:10,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 17:00:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:11,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 17:00:11,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:11,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 17:00:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 17 proven. 123 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 17:00:11,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:11,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:11,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881557430] [2023-12-24 17:00:11,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881557430] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:11,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:11,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 17:00:11,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446217794] [2023-12-24 17:00:11,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:11,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:00:11,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:11,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:00:11,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:00:11,512 INFO L87 Difference]: Start difference. First operand 679 states and 901 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:11,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:11,570 INFO L93 Difference]: Finished difference Result 1313 states and 1740 transitions. [2023-12-24 17:00:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:00:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 144 [2023-12-24 17:00:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:11,574 INFO L225 Difference]: With dead ends: 1313 [2023-12-24 17:00:11,574 INFO L226 Difference]: Without dead ends: 659 [2023-12-24 17:00:11,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:00:11,575 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 88 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:11,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 530 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:00:11,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-24 17:00:11,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 657. [2023-12-24 17:00:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 531 states have (on average 1.2372881355932204) internal successors, (657), 540 states have internal predecessors, (657), 104 states have call successors, (104), 21 states have call predecessors, (104), 21 states have return successors, (104), 95 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 17:00:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 865 transitions. [2023-12-24 17:00:11,592 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 865 transitions. Word has length 144 [2023-12-24 17:00:11,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:11,593 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 865 transitions. [2023-12-24 17:00:11,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 865 transitions. [2023-12-24 17:00:11,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 17:00:11,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:11,594 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:11,604 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 (19)] Ended with exit code 0 [2023-12-24 17:00:11,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:00:11,798 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:11,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:11,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1305691030, now seen corresponding path program 1 times [2023-12-24 17:00:11,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:11,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067436032] [2023-12-24 17:00:11,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:11,799 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 17:00:11,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:11,800 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 17:00:11,805 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 17:00:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:12,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 17:00:12,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:12,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 17:00:12,663 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 17:00:12,716 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 27 treesize of output 23 [2023-12-24 17:00:12,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:12,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 71 [2023-12-24 17:00:12,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:00:12,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:13,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:13,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067436032] [2023-12-24 17:00:13,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067436032] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:13,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:13,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 20 [2023-12-24 17:00:13,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015160577] [2023-12-24 17:00:13,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:13,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:00:13,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:13,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:00:13,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-24 17:00:13,147 INFO L87 Difference]: Start difference. First operand 657 states and 865 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:13,442 INFO L93 Difference]: Finished difference Result 1359 states and 1790 transitions. [2023-12-24 17:00:13,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 17:00:13,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 144 [2023-12-24 17:00:13,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:13,448 INFO L225 Difference]: With dead ends: 1359 [2023-12-24 17:00:13,448 INFO L226 Difference]: Without dead ends: 727 [2023-12-24 17:00:13,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-12-24 17:00:13,450 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 119 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:13,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 646 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:00:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2023-12-24 17:00:13,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 677. [2023-12-24 17:00:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 549 states have (on average 1.2295081967213115) internal successors, (675), 558 states have internal predecessors, (675), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 95 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 17:00:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 883 transitions. [2023-12-24 17:00:13,475 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 883 transitions. Word has length 144 [2023-12-24 17:00:13,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:13,475 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 883 transitions. [2023-12-24 17:00:13,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 883 transitions. [2023-12-24 17:00:13,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:13,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:13,476 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:13,481 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 17:00:13,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:00:13,681 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:13,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:13,682 INFO L85 PathProgramCache]: Analyzing trace with hash 276880682, now seen corresponding path program 1 times [2023-12-24 17:00:13,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:13,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272394668] [2023-12-24 17:00:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:13,682 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 17:00:13,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:13,683 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:00:13,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 17:00:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:13,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 17:00:13,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:15,004 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 84 treesize of output 64 [2023-12-24 17:00:15,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2023-12-24 17:00:15,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 17:00:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:00:15,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:15,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2023-12-24 17:00:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:15,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:15,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272394668] [2023-12-24 17:00:15,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272394668] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:15,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:15,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-12-24 17:00:15,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23631211] [2023-12-24 17:00:15,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 17:00:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 17:00:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2023-12-24 17:00:15,604 INFO L87 Difference]: Start difference. First operand 677 states and 883 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:16,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:16,566 INFO L93 Difference]: Finished difference Result 1778 states and 2319 transitions. [2023-12-24 17:00:16,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 17:00:16,567 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:00:16,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:16,577 INFO L225 Difference]: With dead ends: 1778 [2023-12-24 17:00:16,577 INFO L226 Difference]: Without dead ends: 1126 [2023-12-24 17:00:16,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 17:00:16,580 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 468 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:16,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 996 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 17:00:16,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-12-24 17:00:16,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 747. [2023-12-24 17:00:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 616 states have (on average 1.2402597402597402) internal successors, (764), 626 states have internal predecessors, (764), 106 states have call successors, (106), 24 states have call predecessors, (106), 24 states have return successors, (106), 96 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-24 17:00:16,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 976 transitions. [2023-12-24 17:00:16,605 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 976 transitions. Word has length 145 [2023-12-24 17:00:16,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:16,605 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 976 transitions. [2023-12-24 17:00:16,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 976 transitions. [2023-12-24 17:00:16,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:16,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:16,606 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:16,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 17:00:16,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:00:16,816 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:16,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:16,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1311467220, now seen corresponding path program 1 times [2023-12-24 17:00:16,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:16,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815221530] [2023-12-24 17:00:16,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:16,817 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 17:00:16,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:16,819 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 17:00:16,820 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 17:00:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:17,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:00:17,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:17,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 17:00:17,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 17:00:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:00:17,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:18,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:18,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815221530] [2023-12-24 17:00:18,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815221530] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:18,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:18,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2023-12-24 17:00:18,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736795335] [2023-12-24 17:00:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:18,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:00:18,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:18,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:00:18,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:00:18,017 INFO L87 Difference]: Start difference. First operand 747 states and 976 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:18,254 INFO L93 Difference]: Finished difference Result 1937 states and 2525 transitions. [2023-12-24 17:00:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:00:18,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:00:18,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:18,259 INFO L225 Difference]: With dead ends: 1937 [2023-12-24 17:00:18,259 INFO L226 Difference]: Without dead ends: 1215 [2023-12-24 17:00:18,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-12-24 17:00:18,261 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 159 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:18,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 480 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:00:18,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-12-24 17:00:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 795. [2023-12-24 17:00:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 661 states have (on average 1.2435703479576399) internal successors, (822), 672 states have internal predecessors, (822), 108 states have call successors, (108), 25 states have call predecessors, (108), 25 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 17:00:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1038 transitions. [2023-12-24 17:00:18,285 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1038 transitions. Word has length 145 [2023-12-24 17:00:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:18,286 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1038 transitions. [2023-12-24 17:00:18,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1038 transitions. [2023-12-24 17:00:18,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:18,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:18,287 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:18,294 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 17:00:18,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:00:18,492 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:18,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:18,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1972382826, now seen corresponding path program 1 times [2023-12-24 17:00:18,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:18,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410107426] [2023-12-24 17:00:18,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:18,493 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 17:00:18,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:18,494 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:00:18,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 17:00:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:18,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 17:00:18,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:00:19,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:19,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:19,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410107426] [2023-12-24 17:00:19,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410107426] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:19,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:19,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 20 [2023-12-24 17:00:19,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108397078] [2023-12-24 17:00:19,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:19,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:00:19,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:19,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:00:19,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-12-24 17:00:19,767 INFO L87 Difference]: Start difference. First operand 795 states and 1038 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:20,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:20,052 INFO L93 Difference]: Finished difference Result 2076 states and 2706 transitions. [2023-12-24 17:00:20,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:00:20,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:00:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:20,058 INFO L225 Difference]: With dead ends: 2076 [2023-12-24 17:00:20,058 INFO L226 Difference]: Without dead ends: 1302 [2023-12-24 17:00:20,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-12-24 17:00:20,060 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 284 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:20,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 557 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:00:20,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2023-12-24 17:00:20,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 834. [2023-12-24 17:00:20,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 700 states have (on average 1.2514285714285713) internal successors, (876), 711 states have internal predecessors, (876), 108 states have call successors, (108), 25 states have call predecessors, (108), 25 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 17:00:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1092 transitions. [2023-12-24 17:00:20,082 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1092 transitions. Word has length 145 [2023-12-24 17:00:20,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:20,082 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1092 transitions. [2023-12-24 17:00:20,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1092 transitions. [2023-12-24 17:00:20,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:20,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:20,083 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:20,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 17:00:20,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:00:20,289 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:20,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:20,289 INFO L85 PathProgramCache]: Analyzing trace with hash 699582508, now seen corresponding path program 1 times [2023-12-24 17:00:20,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:20,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926196980] [2023-12-24 17:00:20,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:20,290 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 17:00:20,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:20,291 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 17:00:20,292 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 17:00:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:20,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 17:00:20,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:21,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 17:00:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:00:21,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:21,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:22,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:22,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926196980] [2023-12-24 17:00:22,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926196980] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:22,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:22,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 25 [2023-12-24 17:00:22,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255387965] [2023-12-24 17:00:22,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:22,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:00:22,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:22,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:00:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2023-12-24 17:00:22,048 INFO L87 Difference]: Start difference. First operand 834 states and 1092 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:22,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:22,958 INFO L93 Difference]: Finished difference Result 1993 states and 2605 transitions. [2023-12-24 17:00:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 17:00:22,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:00:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:22,962 INFO L225 Difference]: With dead ends: 1993 [2023-12-24 17:00:22,962 INFO L226 Difference]: Without dead ends: 1182 [2023-12-24 17:00:22,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2023-12-24 17:00:22,964 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 177 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:22,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 984 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 17:00:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2023-12-24 17:00:22,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 820. [2023-12-24 17:00:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 686 states have (on average 1.2478134110787171) internal successors, (856), 697 states have internal predecessors, (856), 108 states have call successors, (108), 25 states have call predecessors, (108), 25 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 17:00:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1072 transitions. [2023-12-24 17:00:23,003 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1072 transitions. Word has length 145 [2023-12-24 17:00:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:23,003 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1072 transitions. [2023-12-24 17:00:23,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1072 transitions. [2023-12-24 17:00:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:23,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:23,005 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:23,012 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 17:00:23,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:00:23,210 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:23,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:23,210 INFO L85 PathProgramCache]: Analyzing trace with hash 98888182, now seen corresponding path program 1 times [2023-12-24 17:00:23,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:23,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131663120] [2023-12-24 17:00:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:23,211 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 17:00:23,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:23,212 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:00:23,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 17:00:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:23,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 17:00:23,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:25,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 17:00:25,089 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 23 treesize of output 15 [2023-12-24 17:00:25,098 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 18 treesize of output 10 [2023-12-24 17:00:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 13 proven. 539 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 17:00:25,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:25,721 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 17:00:25,721 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 36 treesize of output 35 [2023-12-24 17:00:25,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:25,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131663120] [2023-12-24 17:00:25,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131663120] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:25,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1308799415] [2023-12-24 17:00:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:25,822 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:00:25,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:00:25,874 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:00:25,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-24 17:00:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:26,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 17:00:26,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:26,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:00:27,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:00:29,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:00:30,664 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 27 treesize of output 19 [2023-12-24 17:00:30,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 17:00:30,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 13 proven. 539 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 17:00:30,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:30,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2023-12-24 17:00:30,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1308799415] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:30,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:00:30,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2023-12-24 17:00:30,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400100655] [2023-12-24 17:00:30,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:00:30,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-24 17:00:30,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:30,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-24 17:00:31,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1914, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 17:00:31,000 INFO L87 Difference]: Start difference. First operand 820 states and 1072 transitions. Second operand has 39 states, 33 states have (on average 3.727272727272727) internal successors, (123), 32 states have internal predecessors, (123), 14 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 8 states have call predecessors, (38), 14 states have call successors, (38) [2023-12-24 17:00:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:34,463 INFO L93 Difference]: Finished difference Result 1962 states and 2496 transitions. [2023-12-24 17:00:34,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 17:00:34,464 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 33 states have (on average 3.727272727272727) internal successors, (123), 32 states have internal predecessors, (123), 14 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 8 states have call predecessors, (38), 14 states have call successors, (38) Word has length 145 [2023-12-24 17:00:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:34,467 INFO L225 Difference]: With dead ends: 1962 [2023-12-24 17:00:34,467 INFO L226 Difference]: Without dead ends: 1167 [2023-12-24 17:00:34,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=959, Invalid=4591, Unknown=0, NotChecked=0, Total=5550 [2023-12-24 17:00:34,469 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 861 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:34,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 2128 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-24 17:00:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2023-12-24 17:00:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 742. [2023-12-24 17:00:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 622 states have (on average 1.2379421221864952) internal successors, (770), 629 states have internal predecessors, (770), 86 states have call successors, (86), 33 states have call predecessors, (86), 33 states have return successors, (86), 79 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 17:00:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 942 transitions. [2023-12-24 17:00:34,515 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 942 transitions. Word has length 145 [2023-12-24 17:00:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:34,516 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 942 transitions. [2023-12-24 17:00:34,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 33 states have (on average 3.727272727272727) internal successors, (123), 32 states have internal predecessors, (123), 14 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 8 states have call predecessors, (38), 14 states have call successors, (38) [2023-12-24 17:00:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 942 transitions. [2023-12-24 17:00:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:34,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:34,518 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:34,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2023-12-24 17:00:34,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 17:00:34,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:00:34,923 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:34,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:34,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1590055560, now seen corresponding path program 1 times [2023-12-24 17:00:34,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:34,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503706626] [2023-12-24 17:00:34,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:34,924 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 17:00:34,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:34,926 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 17:00:34,928 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 (27)] Waiting until timeout for monitored process [2023-12-24 17:00:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:35,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 17:00:35,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:35,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:35,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 17:00:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:00:35,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:36,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:36,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503706626] [2023-12-24 17:00:36,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503706626] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:36,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:36,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 17:00:36,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888243388] [2023-12-24 17:00:36,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:36,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:00:36,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:36,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:00:36,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 17:00:36,033 INFO L87 Difference]: Start difference. First operand 742 states and 942 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:36,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:36,274 INFO L93 Difference]: Finished difference Result 1558 states and 1976 transitions. [2023-12-24 17:00:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:00:36,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:00:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:36,291 INFO L225 Difference]: With dead ends: 1558 [2023-12-24 17:00:36,291 INFO L226 Difference]: Without dead ends: 817 [2023-12-24 17:00:36,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-12-24 17:00:36,292 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 76 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:36,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 527 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:00:36,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-12-24 17:00:36,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 732. [2023-12-24 17:00:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 612 states have (on average 1.238562091503268) internal successors, (758), 619 states have internal predecessors, (758), 86 states have call successors, (86), 33 states have call predecessors, (86), 33 states have return successors, (86), 79 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 17:00:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 930 transitions. [2023-12-24 17:00:36,337 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 930 transitions. Word has length 145 [2023-12-24 17:00:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:36,337 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 930 transitions. [2023-12-24 17:00:36,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 930 transitions. [2023-12-24 17:00:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:36,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:36,339 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:36,343 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 (27)] Ended with exit code 0 [2023-12-24 17:00:36,543 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 17:00:36,543 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:36,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:36,543 INFO L85 PathProgramCache]: Analyzing trace with hash -41660428, now seen corresponding path program 1 times [2023-12-24 17:00:36,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:36,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692956159] [2023-12-24 17:00:36,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:36,544 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 17:00:36,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:36,545 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 17:00:36,546 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 17:00:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:36,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 17:00:36,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:37,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 63 [2023-12-24 17:00:37,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:37,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-12-24 17:00:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:00:38,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:38,377 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 49 treesize of output 37 [2023-12-24 17:00:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:38,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:38,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692956159] [2023-12-24 17:00:38,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692956159] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:38,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:38,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-12-24 17:00:38,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637070711] [2023-12-24 17:00:38,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:38,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 17:00:38,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 17:00:38,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2023-12-24 17:00:38,509 INFO L87 Difference]: Start difference. First operand 732 states and 930 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:39,565 INFO L93 Difference]: Finished difference Result 1823 states and 2319 transitions. [2023-12-24 17:00:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 17:00:39,566 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:00:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:39,569 INFO L225 Difference]: With dead ends: 1823 [2023-12-24 17:00:39,569 INFO L226 Difference]: Without dead ends: 1092 [2023-12-24 17:00:39,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 17:00:39,571 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 175 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:39,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1365 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 17:00:39,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2023-12-24 17:00:39,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 744. [2023-12-24 17:00:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 624 states have (on average 1.2403846153846154) internal successors, (774), 631 states have internal predecessors, (774), 86 states have call successors, (86), 33 states have call predecessors, (86), 33 states have return successors, (86), 79 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 17:00:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 946 transitions. [2023-12-24 17:00:39,633 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 946 transitions. Word has length 145 [2023-12-24 17:00:39,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:39,633 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 946 transitions. [2023-12-24 17:00:39,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:39,633 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 946 transitions. [2023-12-24 17:00:39,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:39,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:39,634 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:39,639 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 (28)] Ended with exit code 0 [2023-12-24 17:00:39,836 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 17:00:39,837 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:39,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:39,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1321524106, now seen corresponding path program 1 times [2023-12-24 17:00:39,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:39,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399255826] [2023-12-24 17:00:39,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:39,838 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 17:00:39,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:39,839 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 17:00:39,840 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 17:00:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:40,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 17:00:40,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:41,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:41,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:41,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 13 proven. 539 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 17:00:41,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:42,288 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 17:00:42,288 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 36 treesize of output 35 [2023-12-24 17:00:42,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:42,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399255826] [2023-12-24 17:00:42,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399255826] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:42,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1020466098] [2023-12-24 17:00:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:42,360 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:00:42,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:00:42,361 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:00:42,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2023-12-24 17:00:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:42,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 17:00:42,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:43,245 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 17:00:44,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:00:45,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:00:47,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 17:00:47,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2023-12-24 17:00:47,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2023-12-24 17:00:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 21 proven. 539 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 17:00:47,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:48,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2023-12-24 17:00:48,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1020466098] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:48,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:00:48,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 39 [2023-12-24 17:00:48,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550458508] [2023-12-24 17:00:48,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:00:48,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 17:00:48,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:48,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 17:00:48,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2015, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 17:00:48,225 INFO L87 Difference]: Start difference. First operand 744 states and 946 transitions. Second operand has 40 states, 34 states have (on average 3.823529411764706) internal successors, (130), 33 states have internal predecessors, (130), 15 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 9 states have call predecessors, (38), 15 states have call successors, (38) [2023-12-24 17:00:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:52,266 INFO L93 Difference]: Finished difference Result 1963 states and 2483 transitions. [2023-12-24 17:00:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 17:00:52,267 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 34 states have (on average 3.823529411764706) internal successors, (130), 33 states have internal predecessors, (130), 15 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 9 states have call predecessors, (38), 15 states have call successors, (38) Word has length 145 [2023-12-24 17:00:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:52,270 INFO L225 Difference]: With dead ends: 1963 [2023-12-24 17:00:52,270 INFO L226 Difference]: Without dead ends: 1220 [2023-12-24 17:00:52,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 386 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=980, Invalid=4720, Unknown=0, NotChecked=0, Total=5700 [2023-12-24 17:00:52,272 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 718 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:52,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1667 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 17:00:52,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2023-12-24 17:00:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 782. [2023-12-24 17:00:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 662 states have (on average 1.244712990936556) internal successors, (824), 669 states have internal predecessors, (824), 86 states have call successors, (86), 33 states have call predecessors, (86), 33 states have return successors, (86), 79 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 17:00:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 996 transitions. [2023-12-24 17:00:52,327 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 996 transitions. Word has length 145 [2023-12-24 17:00:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:52,327 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 996 transitions. [2023-12-24 17:00:52,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 34 states have (on average 3.823529411764706) internal successors, (130), 33 states have internal predecessors, (130), 15 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 9 states have call predecessors, (38), 15 states have call successors, (38) [2023-12-24 17:00:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 996 transitions. [2023-12-24 17:00:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:52,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:52,328 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:52,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-24 17:00:52,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2023-12-24 17:00:52,729 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=3,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 17:00:52,729 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:52,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:52,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1730604170, now seen corresponding path program 1 times [2023-12-24 17:00:52,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:52,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182193610] [2023-12-24 17:00:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:52,730 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 17:00:52,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:52,735 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 17:00:52,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 17:00:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:52,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 17:00:52,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:53,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 51 [2023-12-24 17:00:53,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:53,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 17:00:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:00:54,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:54,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:54,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:54,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182193610] [2023-12-24 17:00:54,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182193610] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:54,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:54,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 24 [2023-12-24 17:00:54,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267776541] [2023-12-24 17:00:54,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:54,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:00:54,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:54,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:00:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-12-24 17:00:54,279 INFO L87 Difference]: Start difference. First operand 782 states and 996 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:54,864 INFO L93 Difference]: Finished difference Result 1773 states and 2260 transitions. [2023-12-24 17:00:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 17:00:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:00:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:54,868 INFO L225 Difference]: With dead ends: 1773 [2023-12-24 17:00:54,868 INFO L226 Difference]: Without dead ends: 992 [2023-12-24 17:00:54,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2023-12-24 17:00:54,869 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 120 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:54,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 888 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 17:00:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-12-24 17:00:54,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 772. [2023-12-24 17:00:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 652 states have (on average 1.2453987730061349) internal successors, (812), 659 states have internal predecessors, (812), 86 states have call successors, (86), 33 states have call predecessors, (86), 33 states have return successors, (86), 79 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 17:00:54,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 984 transitions. [2023-12-24 17:00:54,925 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 984 transitions. Word has length 145 [2023-12-24 17:00:54,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:54,926 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 984 transitions. [2023-12-24 17:00:54,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 984 transitions. [2023-12-24 17:00:54,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:54,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:54,928 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:54,941 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 17:00:55,133 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 17:00:55,134 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:55,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:55,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1284499448, now seen corresponding path program 1 times [2023-12-24 17:00:55,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:55,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745174940] [2023-12-24 17:00:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:55,135 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 17:00:55,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:55,136 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 17:00:55,157 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 17:00:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:55,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 17:00:55,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:56,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:56,156 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 31 treesize of output 19 [2023-12-24 17:00:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:00:56,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:56,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:56,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745174940] [2023-12-24 17:00:56,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745174940] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:56,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:56,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 17:00:56,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126921613] [2023-12-24 17:00:56,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:56,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:00:56,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:56,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:00:56,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 17:00:56,339 INFO L87 Difference]: Start difference. First operand 772 states and 984 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:56,551 INFO L93 Difference]: Finished difference Result 1685 states and 2144 transitions. [2023-12-24 17:00:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:00:56,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:00:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:56,554 INFO L225 Difference]: With dead ends: 1685 [2023-12-24 17:00:56,554 INFO L226 Difference]: Without dead ends: 914 [2023-12-24 17:00:56,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 17:00:56,555 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 168 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:56,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 433 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:00:56,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-12-24 17:00:56,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 748. [2023-12-24 17:00:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 628 states have (on average 1.2356687898089171) internal successors, (776), 635 states have internal predecessors, (776), 86 states have call successors, (86), 33 states have call predecessors, (86), 33 states have return successors, (86), 79 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 17:00:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 948 transitions. [2023-12-24 17:00:56,606 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 948 transitions. Word has length 145 [2023-12-24 17:00:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:56,606 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 948 transitions. [2023-12-24 17:00:56,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 948 transitions. [2023-12-24 17:00:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:56,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:56,607 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:56,614 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 17:00:56,812 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 17:00:56,812 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:56,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:56,813 INFO L85 PathProgramCache]: Analyzing trace with hash -232592408, now seen corresponding path program 1 times [2023-12-24 17:00:56,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:56,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660391170] [2023-12-24 17:00:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:56,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:00:56,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:56,814 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 17:00:56,821 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 17:00:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:57,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:00:57,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:57,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 17:00:57,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 17:00:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:00:57,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:00:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:57,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:57,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660391170] [2023-12-24 17:00:57,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660391170] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:00:57,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:00:57,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2023-12-24 17:00:57,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712477572] [2023-12-24 17:00:57,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:57,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:00:57,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:57,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:00:57,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:00:57,936 INFO L87 Difference]: Start difference. First operand 748 states and 948 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:58,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:58,127 INFO L93 Difference]: Finished difference Result 1544 states and 1945 transitions. [2023-12-24 17:00:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:00:58,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:00:58,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:58,129 INFO L225 Difference]: With dead ends: 1544 [2023-12-24 17:00:58,130 INFO L226 Difference]: Without dead ends: 777 [2023-12-24 17:00:58,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-12-24 17:00:58,131 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 147 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:58,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 395 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:00:58,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-12-24 17:00:58,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 652. [2023-12-24 17:00:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 541 states have (on average 1.2051756007393715) internal successors, (652), 547 states have internal predecessors, (652), 78 states have call successors, (78), 32 states have call predecessors, (78), 32 states have return successors, (78), 72 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 17:00:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 808 transitions. [2023-12-24 17:00:58,177 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 808 transitions. Word has length 145 [2023-12-24 17:00:58,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:58,177 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 808 transitions. [2023-12-24 17:00:58,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:58,178 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 808 transitions. [2023-12-24 17:00:58,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:58,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:58,178 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:58,185 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 17:00:58,379 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 17:00:58,379 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:58,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1885611562, now seen corresponding path program 1 times [2023-12-24 17:00:58,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:58,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649344351] [2023-12-24 17:00:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:58,380 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 17:00:58,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:58,381 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 17:00:58,385 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 17:00:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:58,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:00:58,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:58,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:58,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:00:58,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:58,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649344351] [2023-12-24 17:00:58,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649344351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:00:58,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:00:58,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 17:00:58,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508214795] [2023-12-24 17:00:58,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:58,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:00:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:00:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:00:58,659 INFO L87 Difference]: Start difference. First operand 652 states and 808 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:58,868 INFO L93 Difference]: Finished difference Result 1408 states and 1741 transitions. [2023-12-24 17:00:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:00:58,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:00:58,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:58,871 INFO L225 Difference]: With dead ends: 1408 [2023-12-24 17:00:58,871 INFO L226 Difference]: Without dead ends: 757 [2023-12-24 17:00:58,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:00:58,872 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 122 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:58,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 680 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:00:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2023-12-24 17:00:58,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 648. [2023-12-24 17:00:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 537 states have (on average 1.2029795158286778) internal successors, (646), 543 states have internal predecessors, (646), 78 states have call successors, (78), 32 states have call predecessors, (78), 32 states have return successors, (78), 72 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 17:00:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 802 transitions. [2023-12-24 17:00:58,919 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 802 transitions. Word has length 145 [2023-12-24 17:00:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:58,920 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 802 transitions. [2023-12-24 17:00:58,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 802 transitions. [2023-12-24 17:00:58,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:58,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:58,921 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:58,925 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 (34)] Ended with exit code 0 [2023-12-24 17:00:59,125 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 17:00:59,125 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:59,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:59,126 INFO L85 PathProgramCache]: Analyzing trace with hash 915574968, now seen corresponding path program 1 times [2023-12-24 17:00:59,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:59,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232780625] [2023-12-24 17:00:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:59,126 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 17:00:59,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:59,127 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 17:00:59,128 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 17:00:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:00:59,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:00:59,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:00:59,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:00:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:00:59,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:00:59,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:00:59,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232780625] [2023-12-24 17:00:59,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232780625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:00:59,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:00:59,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 17:00:59,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596658411] [2023-12-24 17:00:59,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:00:59,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:00:59,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:00:59,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:00:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:00:59,415 INFO L87 Difference]: Start difference. First operand 648 states and 802 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:59,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:00:59,641 INFO L93 Difference]: Finished difference Result 1431 states and 1765 transitions. [2023-12-24 17:00:59,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:00:59,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:00:59,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:00:59,644 INFO L225 Difference]: With dead ends: 1431 [2023-12-24 17:00:59,644 INFO L226 Difference]: Without dead ends: 784 [2023-12-24 17:00:59,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:00:59,646 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 102 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:00:59,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 715 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:00:59,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2023-12-24 17:00:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 648. [2023-12-24 17:00:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 537 states have (on average 1.1992551210428306) internal successors, (644), 543 states have internal predecessors, (644), 78 states have call successors, (78), 32 states have call predecessors, (78), 32 states have return successors, (78), 72 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 17:00:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 800 transitions. [2023-12-24 17:00:59,704 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 800 transitions. Word has length 145 [2023-12-24 17:00:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:00:59,704 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 800 transitions. [2023-12-24 17:00:59,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:00:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 800 transitions. [2023-12-24 17:00:59,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 17:00:59,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:00:59,706 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:59,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-12-24 17:00:59,907 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 17:00:59,908 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:00:59,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:00:59,908 INFO L85 PathProgramCache]: Analyzing trace with hash -282214863, now seen corresponding path program 1 times [2023-12-24 17:00:59,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:00:59,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125129419] [2023-12-24 17:00:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:00:59,909 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 17:00:59,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:00:59,910 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 17:00:59,929 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 17:01:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:00,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 17:01:00,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:00,276 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 19 treesize of output 15 [2023-12-24 17:01:00,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 17:01:00,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 17:01:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-24 17:01:00,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:00,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:00,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125129419] [2023-12-24 17:01:00,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125129419] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:00,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:00,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 14 [2023-12-24 17:01:00,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422039136] [2023-12-24 17:01:00,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:00,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:01:00,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:00,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:01:00,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:01:00,505 INFO L87 Difference]: Start difference. First operand 648 states and 800 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:00,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:00,878 INFO L93 Difference]: Finished difference Result 1365 states and 1689 transitions. [2023-12-24 17:01:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 17:01:00,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 17:01:00,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:00,880 INFO L225 Difference]: With dead ends: 1365 [2023-12-24 17:01:00,880 INFO L226 Difference]: Without dead ends: 718 [2023-12-24 17:01:00,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-12-24 17:01:00,882 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 165 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:00,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1357 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:01:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-12-24 17:01:00,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 655. [2023-12-24 17:01:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 544 states have (on average 1.1948529411764706) internal successors, (650), 550 states have internal predecessors, (650), 78 states have call successors, (78), 32 states have call predecessors, (78), 32 states have return successors, (78), 72 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 17:01:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 806 transitions. [2023-12-24 17:01:00,931 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 806 transitions. Word has length 145 [2023-12-24 17:01:00,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:00,931 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 806 transitions. [2023-12-24 17:01:00,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 806 transitions. [2023-12-24 17:01:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:01:00,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:00,933 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:00,940 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 17:01:01,140 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 17:01:01,142 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:01,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:01,143 INFO L85 PathProgramCache]: Analyzing trace with hash -110038333, now seen corresponding path program 1 times [2023-12-24 17:01:01,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:01,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951428827] [2023-12-24 17:01:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:01,143 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 17:01:01,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:01,144 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 17:01:01,158 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 17:01:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:01,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 17:01:01,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 7 proven. 373 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 17:01:01,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:01,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:01,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951428827] [2023-12-24 17:01:01,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951428827] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:01,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:01,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 17:01:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082252859] [2023-12-24 17:01:01,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:01,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:01:01,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:01,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:01:01,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:01:01,782 INFO L87 Difference]: Start difference. First operand 655 states and 806 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:01,899 INFO L93 Difference]: Finished difference Result 1335 states and 1648 transitions. [2023-12-24 17:01:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:01:01,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 17:01:01,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:01,901 INFO L225 Difference]: With dead ends: 1335 [2023-12-24 17:01:01,901 INFO L226 Difference]: Without dead ends: 681 [2023-12-24 17:01:01,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:01:01,902 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 164 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:01,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 485 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:01:01,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2023-12-24 17:01:01,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 636. [2023-12-24 17:01:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 525 states have (on average 1.1904761904761905) internal successors, (625), 531 states have internal predecessors, (625), 78 states have call successors, (78), 32 states have call predecessors, (78), 32 states have return successors, (78), 72 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 17:01:01,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 781 transitions. [2023-12-24 17:01:01,951 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 781 transitions. Word has length 146 [2023-12-24 17:01:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:01,952 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 781 transitions. [2023-12-24 17:01:01,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 781 transitions. [2023-12-24 17:01:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:01:01,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:01,953 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:01,960 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 17:01:02,157 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 17:01:02,158 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:02,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:02,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1053648175, now seen corresponding path program 1 times [2023-12-24 17:01:02,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:02,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983708325] [2023-12-24 17:01:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:02,159 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 17:01:02,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:02,160 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 17:01:02,160 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 17:01:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:02,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 17:01:02,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:02,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 17:01:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 7 proven. 373 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 17:01:02,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:02,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:02,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983708325] [2023-12-24 17:01:02,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983708325] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:02,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:02,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 17:01:02,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029150822] [2023-12-24 17:01:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:02,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:01:02,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:01:02,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:01:02,841 INFO L87 Difference]: Start difference. First operand 636 states and 781 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:02,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:02,980 INFO L93 Difference]: Finished difference Result 1273 states and 1557 transitions. [2023-12-24 17:01:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:01:02,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 17:01:02,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:02,983 INFO L225 Difference]: With dead ends: 1273 [2023-12-24 17:01:02,983 INFO L226 Difference]: Without dead ends: 638 [2023-12-24 17:01:02,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:01:02,984 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 168 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:02,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 458 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:01:02,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-12-24 17:01:03,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 395. [2023-12-24 17:01:03,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 342 states have (on average 1.2046783625730995) internal successors, (412), 344 states have internal predecessors, (412), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-24 17:01:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 486 transitions. [2023-12-24 17:01:03,016 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 486 transitions. Word has length 146 [2023-12-24 17:01:03,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:03,017 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 486 transitions. [2023-12-24 17:01:03,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 486 transitions. [2023-12-24 17:01:03,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 17:01:03,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:03,018 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:03,028 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 17:01:03,222 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 17:01:03,223 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:03,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:03,223 INFO L85 PathProgramCache]: Analyzing trace with hash 505163439, now seen corresponding path program 1 times [2023-12-24 17:01:03,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:03,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6029226] [2023-12-24 17:01:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:03,224 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 17:01:03,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:03,224 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 17:01:03,225 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 17:01:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:03,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 17:01:03,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:05,012 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 27 treesize of output 23 [2023-12-24 17:01:05,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 17:01:05,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-24 17:01:05,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 51 [2023-12-24 17:01:05,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:01:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 13 proven. 539 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 17:01:05,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:06,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:06,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6029226] [2023-12-24 17:01:06,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6029226] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:06,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:06,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27] total 37 [2023-12-24 17:01:06,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528345330] [2023-12-24 17:01:06,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:06,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 17:01:06,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:06,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 17:01:06,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1220, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 17:01:06,318 INFO L87 Difference]: Start difference. First operand 395 states and 486 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:07,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:07,320 INFO L93 Difference]: Finished difference Result 931 states and 1146 transitions. [2023-12-24 17:01:07,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 17:01:07,320 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-24 17:01:07,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:07,322 INFO L225 Difference]: With dead ends: 931 [2023-12-24 17:01:07,322 INFO L226 Difference]: Without dead ends: 537 [2023-12-24 17:01:07,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=193, Invalid=1877, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 17:01:07,323 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 294 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:07,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1372 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 17:01:07,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-12-24 17:01:07,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 413. [2023-12-24 17:01:07,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 360 states have (on average 1.2055555555555555) internal successors, (434), 362 states have internal predecessors, (434), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-24 17:01:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 508 transitions. [2023-12-24 17:01:07,367 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 508 transitions. Word has length 147 [2023-12-24 17:01:07,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:07,368 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 508 transitions. [2023-12-24 17:01:07,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:07,368 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 508 transitions. [2023-12-24 17:01:07,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 17:01:07,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:07,369 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:07,384 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 17:01:07,575 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 17:01:07,575 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:07,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:07,575 INFO L85 PathProgramCache]: Analyzing trace with hash 927865265, now seen corresponding path program 1 times [2023-12-24 17:01:07,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:07,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555221398] [2023-12-24 17:01:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:07,576 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 17:01:07,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:07,577 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 17:01:07,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-24 17:01:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:07,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 17:01:07,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:08,615 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 27 treesize of output 23 [2023-12-24 17:01:08,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-24 17:01:08,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2023-12-24 17:01:08,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2023-12-24 17:01:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:01:09,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:09,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:09,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555221398] [2023-12-24 17:01:09,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555221398] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:09,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:09,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [23] total 32 [2023-12-24 17:01:09,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14956132] [2023-12-24 17:01:09,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:09,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:01:09,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:09,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:01:09,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2023-12-24 17:01:09,442 INFO L87 Difference]: Start difference. First operand 413 states and 508 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:10,476 INFO L93 Difference]: Finished difference Result 956 states and 1172 transitions. [2023-12-24 17:01:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 17:01:10,476 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-24 17:01:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:10,478 INFO L225 Difference]: With dead ends: 956 [2023-12-24 17:01:10,478 INFO L226 Difference]: Without dead ends: 544 [2023-12-24 17:01:10,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1540, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 17:01:10,479 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 261 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:10,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1450 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 17:01:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-12-24 17:01:10,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 397. [2023-12-24 17:01:10,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 344 states have (on average 1.2034883720930232) internal successors, (414), 346 states have internal predecessors, (414), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-24 17:01:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 488 transitions. [2023-12-24 17:01:10,512 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 488 transitions. Word has length 147 [2023-12-24 17:01:10,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:10,512 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 488 transitions. [2023-12-24 17:01:10,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 488 transitions. [2023-12-24 17:01:10,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 17:01:10,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:10,513 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:10,518 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 (40)] Ended with exit code 0 [2023-12-24 17:01:10,713 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 17:01:10,714 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:10,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:10,714 INFO L85 PathProgramCache]: Analyzing trace with hash 274260401, now seen corresponding path program 1 times [2023-12-24 17:01:10,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:10,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775729332] [2023-12-24 17:01:10,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:10,714 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 17:01:10,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:10,715 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 17:01:10,722 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 17:01:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:10,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 17:01:10,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:10,991 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 17:01:11,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:01:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:11,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:01:11,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:11,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775729332] [2023-12-24 17:01:11,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775729332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:01:11,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:01:11,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 17:01:11,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152716463] [2023-12-24 17:01:11,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:11,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 17:01:11,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:11,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 17:01:11,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:01:11,062 INFO L87 Difference]: Start difference. First operand 397 states and 488 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:11,345 INFO L93 Difference]: Finished difference Result 931 states and 1145 transitions. [2023-12-24 17:01:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 17:01:11,346 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-24 17:01:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:11,351 INFO L225 Difference]: With dead ends: 931 [2023-12-24 17:01:11,351 INFO L226 Difference]: Without dead ends: 535 [2023-12-24 17:01:11,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:01:11,352 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 190 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:11,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1719 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:01:11,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-12-24 17:01:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 423. [2023-12-24 17:01:11,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 370 states have (on average 1.2027027027027026) internal successors, (445), 372 states have internal predecessors, (445), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-24 17:01:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 519 transitions. [2023-12-24 17:01:11,388 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 519 transitions. Word has length 147 [2023-12-24 17:01:11,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:11,388 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 519 transitions. [2023-12-24 17:01:11,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:11,388 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 519 transitions. [2023-12-24 17:01:11,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 17:01:11,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:11,389 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:11,394 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 17:01:11,593 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 17:01:11,594 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:11,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:11,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1648967633, now seen corresponding path program 1 times [2023-12-24 17:01:11,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:11,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63623281] [2023-12-24 17:01:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:11,595 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 17:01:11,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:11,596 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 17:01:11,597 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 (42)] Waiting until timeout for monitored process [2023-12-24 17:01:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:11,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:01:11,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:12,551 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 27 treesize of output 19 [2023-12-24 17:01:12,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 17:01:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 346 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:01:12,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:12,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63623281] [2023-12-24 17:01:12,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63623281] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:12,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:12,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2023-12-24 17:01:12,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043253477] [2023-12-24 17:01:12,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:12,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:01:12,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:01:12,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:01:12,728 INFO L87 Difference]: Start difference. First operand 423 states and 519 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:12,913 INFO L93 Difference]: Finished difference Result 860 states and 1052 transitions. [2023-12-24 17:01:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:01:12,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-24 17:01:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:12,915 INFO L225 Difference]: With dead ends: 860 [2023-12-24 17:01:12,915 INFO L226 Difference]: Without dead ends: 438 [2023-12-24 17:01:12,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-12-24 17:01:12,916 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 125 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:12,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 425 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:01:12,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-24 17:01:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 385. [2023-12-24 17:01:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 332 states have (on average 1.2018072289156627) internal successors, (399), 334 states have internal predecessors, (399), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-24 17:01:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 473 transitions. [2023-12-24 17:01:12,951 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 473 transitions. Word has length 147 [2023-12-24 17:01:12,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:12,951 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 473 transitions. [2023-12-24 17:01:12,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:12,951 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 473 transitions. [2023-12-24 17:01:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 17:01:12,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:12,952 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:12,959 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 17:01:13,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 17:01:13,157 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:13,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:13,157 INFO L85 PathProgramCache]: Analyzing trace with hash -976809857, now seen corresponding path program 1 times [2023-12-24 17:01:13,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:13,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004455153] [2023-12-24 17:01:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:13,158 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 17:01:13,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:13,159 INFO L229 MonitoredProcess]: Starting monitored process 43 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 17:01:13,160 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 (43)] Waiting until timeout for monitored process [2023-12-24 17:01:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:13,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 17:01:13,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:13,471 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 17:01:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-24 17:01:13,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:13,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:13,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004455153] [2023-12-24 17:01:13,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004455153] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:13,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:13,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-12-24 17:01:13,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298869523] [2023-12-24 17:01:13,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:13,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:01:13,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:13,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:01:13,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:01:13,648 INFO L87 Difference]: Start difference. First operand 385 states and 473 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:13,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:13,793 INFO L93 Difference]: Finished difference Result 402 states and 493 transitions. [2023-12-24 17:01:13,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:01:13,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-24 17:01:13,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:13,797 INFO L225 Difference]: With dead ends: 402 [2023-12-24 17:01:13,797 INFO L226 Difference]: Without dead ends: 400 [2023-12-24 17:01:13,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:01:13,798 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 45 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:13,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 451 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:01:13,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-12-24 17:01:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 391. [2023-12-24 17:01:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 338 states have (on average 1.198224852071006) internal successors, (405), 340 states have internal predecessors, (405), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-24 17:01:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 479 transitions. [2023-12-24 17:01:13,841 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 479 transitions. Word has length 147 [2023-12-24 17:01:13,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:13,841 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 479 transitions. [2023-12-24 17:01:13,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:13,841 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 479 transitions. [2023-12-24 17:01:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 17:01:13,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:13,844 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:13,849 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 (43)] Forceful destruction successful, exit code 0 [2023-12-24 17:01:14,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 17:01:14,049 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:14,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash -976750275, now seen corresponding path program 1 times [2023-12-24 17:01:14,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:14,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500962261] [2023-12-24 17:01:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:14,050 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 17:01:14,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:14,051 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 17:01:14,053 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 17:01:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:14,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 17:01:14,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:14,315 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 17:01:14,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 39 [2023-12-24 17:01:14,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:01:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:14,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:01:14,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:14,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500962261] [2023-12-24 17:01:14,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500962261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:01:14,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:01:14,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:01:14,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072602927] [2023-12-24 17:01:14,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:14,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:01:14,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:14,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:01:14,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:01:14,371 INFO L87 Difference]: Start difference. First operand 391 states and 479 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:14,469 INFO L93 Difference]: Finished difference Result 844 states and 1030 transitions. [2023-12-24 17:01:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:01:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-24 17:01:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:14,470 INFO L225 Difference]: With dead ends: 844 [2023-12-24 17:01:14,470 INFO L226 Difference]: Without dead ends: 454 [2023-12-24 17:01:14,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 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 17:01:14,471 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 93 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:14,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 621 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:01:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-24 17:01:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 453. [2023-12-24 17:01:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 376 states have (on average 1.1702127659574468) internal successors, (440), 379 states have internal predecessors, (440), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 17:01:14,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 548 transitions. [2023-12-24 17:01:14,519 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 548 transitions. Word has length 147 [2023-12-24 17:01:14,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:14,519 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 548 transitions. [2023-12-24 17:01:14,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:14,519 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 548 transitions. [2023-12-24 17:01:14,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 17:01:14,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:14,520 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:14,525 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 (44)] Ended with exit code 0 [2023-12-24 17:01:14,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 17:01:14,725 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:14,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:14,726 INFO L85 PathProgramCache]: Analyzing trace with hash -919491973, now seen corresponding path program 1 times [2023-12-24 17:01:14,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:14,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066840728] [2023-12-24 17:01:14,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:14,726 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 17:01:14,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:14,727 INFO L229 MonitoredProcess]: Starting monitored process 45 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 17:01:14,728 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 (45)] Waiting until timeout for monitored process [2023-12-24 17:01:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:14,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 17:01:14,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:14,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:01:14,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:14,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066840728] [2023-12-24 17:01:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066840728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:01:14,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:01:14,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:01:14,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276725427] [2023-12-24 17:01:14,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:14,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:01:14,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:14,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:01:14,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:01:14,999 INFO L87 Difference]: Start difference. First operand 453 states and 548 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:15,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:15,081 INFO L93 Difference]: Finished difference Result 865 states and 1047 transitions. [2023-12-24 17:01:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:01:15,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-24 17:01:15,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:15,083 INFO L225 Difference]: With dead ends: 865 [2023-12-24 17:01:15,083 INFO L226 Difference]: Without dead ends: 471 [2023-12-24 17:01:15,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 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 17:01:15,084 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 16 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:15,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 507 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:01:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-12-24 17:01:15,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 462. [2023-12-24 17:01:15,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 385 states have (on average 1.1662337662337663) internal successors, (449), 388 states have internal predecessors, (449), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 17:01:15,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 557 transitions. [2023-12-24 17:01:15,138 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 557 transitions. Word has length 147 [2023-12-24 17:01:15,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:15,138 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 557 transitions. [2023-12-24 17:01:15,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 557 transitions. [2023-12-24 17:01:15,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 17:01:15,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:15,139 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:15,144 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 (45)] Forceful destruction successful, exit code 0 [2023-12-24 17:01:15,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 17:01:15,345 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:15,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:15,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1708444810, now seen corresponding path program 1 times [2023-12-24 17:01:15,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:15,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216904252] [2023-12-24 17:01:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:15,345 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 17:01:15,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:15,346 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 17:01:15,347 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 17:01:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:15,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 17:01:15,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:15,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-24 17:01:15,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 17:01:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 15 proven. 237 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-24 17:01:16,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:16,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:16,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216904252] [2023-12-24 17:01:16,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216904252] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:16,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:16,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-12-24 17:01:16,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140939004] [2023-12-24 17:01:16,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:16,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:01:16,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:16,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:01:16,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:01:16,180 INFO L87 Difference]: Start difference. First operand 462 states and 557 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:16,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:16,482 INFO L93 Difference]: Finished difference Result 1072 states and 1282 transitions. [2023-12-24 17:01:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:01:16,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2023-12-24 17:01:16,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:16,484 INFO L225 Difference]: With dead ends: 1072 [2023-12-24 17:01:16,484 INFO L226 Difference]: Without dead ends: 669 [2023-12-24 17:01:16,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-12-24 17:01:16,485 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 129 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:16,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 520 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:01:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-12-24 17:01:16,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 568. [2023-12-24 17:01:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 491 states have (on average 1.1588594704684319) internal successors, (569), 494 states have internal predecessors, (569), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 17:01:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 677 transitions. [2023-12-24 17:01:16,532 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 677 transitions. Word has length 149 [2023-12-24 17:01:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:16,534 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 677 transitions. [2023-12-24 17:01:16,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 677 transitions. [2023-12-24 17:01:16,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 17:01:16,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:16,535 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:16,550 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 (46)] Forceful destruction successful, exit code 0 [2023-12-24 17:01:16,742 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 [2023-12-24 17:01:16,742 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:16,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:16,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1450279372, now seen corresponding path program 1 times [2023-12-24 17:01:16,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:16,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319905941] [2023-12-24 17:01:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:16,743 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 17:01:16,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:16,744 INFO L229 MonitoredProcess]: Starting monitored process 47 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 17:01:16,745 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 (47)] Waiting until timeout for monitored process [2023-12-24 17:01:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:17,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:01:17,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:17,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 17:01:17,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:01:17,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-24 17:01:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 476 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-24 17:01:17,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:18,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:18,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319905941] [2023-12-24 17:01:18,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319905941] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:18,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:18,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 17:01:18,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511410460] [2023-12-24 17:01:18,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:18,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:01:18,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:18,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:01:18,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-24 17:01:18,167 INFO L87 Difference]: Start difference. First operand 568 states and 677 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:18,404 INFO L93 Difference]: Finished difference Result 1308 states and 1552 transitions. [2023-12-24 17:01:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:01:18,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2023-12-24 17:01:18,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:18,406 INFO L225 Difference]: With dead ends: 1308 [2023-12-24 17:01:18,406 INFO L226 Difference]: Without dead ends: 799 [2023-12-24 17:01:18,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:01:18,407 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 106 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:18,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 367 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:01:18,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-24 17:01:18,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 671. [2023-12-24 17:01:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 594 states have (on average 1.1447811447811447) internal successors, (680), 597 states have internal predecessors, (680), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 17:01:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 788 transitions. [2023-12-24 17:01:18,456 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 788 transitions. Word has length 149 [2023-12-24 17:01:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:18,456 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 788 transitions. [2023-12-24 17:01:18,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 788 transitions. [2023-12-24 17:01:18,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 17:01:18,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:18,457 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:18,470 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 (47)] Forceful destruction successful, exit code 0 [2023-12-24 17:01:18,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 17:01:18,663 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:18,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:18,664 INFO L85 PathProgramCache]: Analyzing trace with hash 214783224, now seen corresponding path program 1 times [2023-12-24 17:01:18,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:18,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827853279] [2023-12-24 17:01:18,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:18,664 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 17:01:18,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:18,665 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 17:01:18,676 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 17:01:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:18,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:01:18,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:19,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:01:19,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:01:19,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:01:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 476 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-24 17:01:19,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:20,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:20,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827853279] [2023-12-24 17:01:20,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827853279] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:20,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:20,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 17:01:20,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897817217] [2023-12-24 17:01:20,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:20,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:01:20,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:20,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:01:20,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-24 17:01:20,116 INFO L87 Difference]: Start difference. First operand 671 states and 788 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:20,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:20,343 INFO L93 Difference]: Finished difference Result 1366 states and 1603 transitions. [2023-12-24 17:01:20,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:01:20,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2023-12-24 17:01:20,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:20,345 INFO L225 Difference]: With dead ends: 1366 [2023-12-24 17:01:20,345 INFO L226 Difference]: Without dead ends: 754 [2023-12-24 17:01:20,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:01:20,346 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 61 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:20,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 508 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:01:20,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-24 17:01:20,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 671. [2023-12-24 17:01:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 594 states have (on average 1.1397306397306397) internal successors, (677), 597 states have internal predecessors, (677), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 17:01:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 785 transitions. [2023-12-24 17:01:20,403 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 785 transitions. Word has length 149 [2023-12-24 17:01:20,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:20,403 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 785 transitions. [2023-12-24 17:01:20,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:20,403 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 785 transitions. [2023-12-24 17:01:20,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 17:01:20,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:20,404 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:20,411 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 (48)] Forceful destruction successful, exit code 0 [2023-12-24 17:01:20,610 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 17:01:20,611 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:20,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:20,611 INFO L85 PathProgramCache]: Analyzing trace with hash 472948662, now seen corresponding path program 1 times [2023-12-24 17:01:20,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:20,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762977452] [2023-12-24 17:01:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:20,612 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 17:01:20,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:20,613 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 17:01:20,646 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 17:01:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:20,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 17:01:20,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:21,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:01:21,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2023-12-24 17:01:21,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-24 17:01:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 17:01:21,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:21,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:21,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762977452] [2023-12-24 17:01:21,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762977452] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:21,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:21,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-24 17:01:21,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124954018] [2023-12-24 17:01:21,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:21,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:01:21,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:21,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:01:21,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:01:21,610 INFO L87 Difference]: Start difference. First operand 671 states and 785 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:22,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:22,053 INFO L93 Difference]: Finished difference Result 1482 states and 1710 transitions. [2023-12-24 17:01:22,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:01:22,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2023-12-24 17:01:22,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:22,055 INFO L225 Difference]: With dead ends: 1482 [2023-12-24 17:01:22,055 INFO L226 Difference]: Without dead ends: 870 [2023-12-24 17:01:22,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-24 17:01:22,056 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 56 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:22,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 740 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 17:01:22,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2023-12-24 17:01:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 783. [2023-12-24 17:01:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 706 states have (on average 1.1203966005665722) internal successors, (791), 709 states have internal predecessors, (791), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 17:01:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 899 transitions. [2023-12-24 17:01:22,117 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 899 transitions. Word has length 149 [2023-12-24 17:01:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:22,118 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 899 transitions. [2023-12-24 17:01:22,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:22,118 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 899 transitions. [2023-12-24 17:01:22,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 17:01:22,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:22,119 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:22,125 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 17:01:22,319 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 17:01:22,320 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:22,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2010183541, now seen corresponding path program 1 times [2023-12-24 17:01:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:22,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325416148] [2023-12-24 17:01:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:22,320 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 17:01:22,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:22,322 INFO L229 MonitoredProcess]: Starting monitored process 50 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 17:01:22,332 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 (50)] Waiting until timeout for monitored process [2023-12-24 17:01:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:22,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 17:01:22,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:24,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 17:01:24,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2023-12-24 17:01:30,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:01:30,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2023-12-24 17:01:30,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 17:01:30,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 28 [2023-12-24 17:01:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 3 proven. 485 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-24 17:01:31,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:01:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:43,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:43,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325416148] [2023-12-24 17:01:43,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325416148] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:01:43,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:01:43,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23] total 27 [2023-12-24 17:01:43,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136066227] [2023-12-24 17:01:43,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:43,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:01:43,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:01:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2023-12-24 17:01:43,425 INFO L87 Difference]: Start difference. First operand 783 states and 899 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:55,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:55,980 INFO L93 Difference]: Finished difference Result 1859 states and 2104 transitions. [2023-12-24 17:01:56,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:01:56,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-12-24 17:01:56,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:56,012 INFO L225 Difference]: With dead ends: 1859 [2023-12-24 17:01:56,012 INFO L226 Difference]: Without dead ends: 1135 [2023-12-24 17:01:56,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2023-12-24 17:01:56,013 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 105 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:56,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 408 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-12-24 17:01:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2023-12-24 17:01:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 995. [2023-12-24 17:01:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 918 states have (on average 1.1002178649237473) internal successors, (1010), 921 states have internal predecessors, (1010), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 17:01:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1118 transitions. [2023-12-24 17:01:56,066 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1118 transitions. Word has length 150 [2023-12-24 17:01:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:56,066 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1118 transitions. [2023-12-24 17:01:56,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1118 transitions. [2023-12-24 17:01:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 17:01:56,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:56,068 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:56,076 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 (50)] Forceful destruction successful, exit code 0 [2023-12-24 17:01:56,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 17:01:56,276 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:56,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:56,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1891756745, now seen corresponding path program 1 times [2023-12-24 17:01:56,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:56,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616595047] [2023-12-24 17:01:56,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:56,277 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 17:01:56,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:56,278 INFO L229 MonitoredProcess]: Starting monitored process 51 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 17:01:56,279 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 (51)] Waiting until timeout for monitored process [2023-12-24 17:01:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:56,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:01:56,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:56,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:01:56,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:56,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616595047] [2023-12-24 17:01:56,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616595047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:01:56,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:01:56,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:01:56,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848960045] [2023-12-24 17:01:56,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:56,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:01:56,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:56,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:01:56,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:01:56,666 INFO L87 Difference]: Start difference. First operand 995 states and 1118 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:56,916 INFO L93 Difference]: Finished difference Result 1961 states and 2199 transitions. [2023-12-24 17:01:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:01:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-12-24 17:01:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:56,918 INFO L225 Difference]: With dead ends: 1961 [2023-12-24 17:01:56,918 INFO L226 Difference]: Without dead ends: 1025 [2023-12-24 17:01:56,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:01:56,920 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 23 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:56,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 634 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 17:01:56,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-12-24 17:01:56,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 998. [2023-12-24 17:01:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 921 states have (on average 1.0998914223669924) internal successors, (1013), 924 states have internal predecessors, (1013), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 17:01:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1121 transitions. [2023-12-24 17:01:56,971 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1121 transitions. Word has length 150 [2023-12-24 17:01:56,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:56,972 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1121 transitions. [2023-12-24 17:01:56,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1121 transitions. [2023-12-24 17:01:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 17:01:56,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:01:56,973 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:56,998 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 (51)] Forceful destruction successful, exit code 0 [2023-12-24 17:01:57,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 17:01:57,182 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:01:57,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:01:57,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2072223155, now seen corresponding path program 1 times [2023-12-24 17:01:57,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:01:57,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776480622] [2023-12-24 17:01:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:01:57,183 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 17:01:57,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:01:57,184 INFO L229 MonitoredProcess]: Starting monitored process 52 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 17:01:57,218 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 (52)] Waiting until timeout for monitored process [2023-12-24 17:01:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:01:57,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 17:01:57,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:01:57,556 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 17:01:57,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-24 17:01:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 17:01:57,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:01:57,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:01:57,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776480622] [2023-12-24 17:01:57,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776480622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:01:57,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:01:57,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 17:01:57,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909081560] [2023-12-24 17:01:57,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:01:57,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:01:57,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:01:57,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:01:57,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:01:57,649 INFO L87 Difference]: Start difference. First operand 998 states and 1121 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:01:58,231 INFO L93 Difference]: Finished difference Result 2660 states and 2990 transitions. [2023-12-24 17:01:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 17:01:58,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-12-24 17:01:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:01:58,240 INFO L225 Difference]: With dead ends: 2660 [2023-12-24 17:01:58,240 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 17:01:58,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:01:58,243 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 138 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:01:58,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1330 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 17:01:58,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 17:01:58,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 17:01:58,243 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 17:01:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 17:01:58,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2023-12-24 17:01:58,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:01:58,244 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 17:01:58,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 17:01:58,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 17:01:58,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 17:01:58,246 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 17:01:58,256 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 (52)] Forceful destruction successful, exit code 0 [2023-12-24 17:01:58,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.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 17:01:58,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 17:14:21,182 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-22-4-7-5-8-21-8-25-8-25-8-25-8-25-8-25-8-25-8-25-8-25-8-25-7-25-7-25-7-25-7-25-7-18-7-16-6-16-6-16-6-3-5-3-4-3-3-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 16 xjuncts wrt. a ∧-68-18-8-18-8-21-8-25-8-25-8-25-8-25-8-25-8-25-8-25-8-25-8-25-7-25-7-25-7-25-7-25-7-18-7-16-6-16-6-16-6-3-5-3-4-3-3-3-2-2-1 context. [2023-12-24 17:14:21,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 17:14:21,203 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 17:14:21,204 INFO L158 Benchmark]: Toolchain (without parser) took 874122.39ms. Allocated memory was 189.8MB in the beginning and 858.8MB in the end (delta: 669.0MB). Free memory was 147.6MB in the beginning and 773.7MB in the end (delta: -626.1MB). Peak memory consumption was 43.2MB. Max. memory is 8.0GB. [2023-12-24 17:14:21,206 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 144.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 17:14:21,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.62ms. Allocated memory is still 189.8MB. Free memory was 147.6MB in the beginning and 132.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-24 17:14:21,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.93ms. Allocated memory is still 189.8MB. Free memory was 132.2MB in the beginning and 128.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 17:14:21,207 INFO L158 Benchmark]: Boogie Preprocessor took 79.32ms. Allocated memory is still 189.8MB. Free memory was 128.7MB in the beginning and 122.8MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 17:14:21,207 INFO L158 Benchmark]: RCFGBuilder took 898.45ms. Allocated memory was 189.8MB in the beginning and 229.6MB in the end (delta: 39.8MB). Free memory was 122.4MB in the beginning and 162.7MB in the end (delta: -40.3MB). Peak memory consumption was 28.2MB. Max. memory is 8.0GB. [2023-12-24 17:14:21,207 INFO L158 Benchmark]: TraceAbstraction took 872866.98ms. Allocated memory was 229.6MB in the beginning and 858.8MB in the end (delta: 629.1MB). Free memory was 162.2MB in the beginning and 773.7MB in the end (delta: -611.5MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. [2023-12-24 17:14:21,213 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 144.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 229.62ms. Allocated memory is still 189.8MB. Free memory was 147.6MB in the beginning and 132.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.93ms. Allocated memory is still 189.8MB. Free memory was 132.2MB in the beginning and 128.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 79.32ms. Allocated memory is still 189.8MB. Free memory was 128.7MB in the beginning and 122.8MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 898.45ms. Allocated memory was 189.8MB in the beginning and 229.6MB in the end (delta: 39.8MB). Free memory was 122.4MB in the beginning and 162.7MB in the end (delta: -40.3MB). Peak memory consumption was 28.2MB. Max. memory is 8.0GB. * TraceAbstraction took 872866.98ms. Allocated memory was 229.6MB in the beginning and 858.8MB in the end (delta: 629.1MB). Free memory was 162.2MB in the beginning and 773.7MB in the end (delta: -611.5MB). Peak memory consumption was 17.1MB. 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 ∨-22-4-7-5-8-21-8-25-8-25-8-25-8-25-8-25-8-25-8-25-8-25-8-25-7-25-7-25-7-25-7-25-7-18-7-16-6-16-6-16-6-3-5-3-4-3-3-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-72-18-8-18-8-21-8-25-8-25-8-25-8-25-8-25-8-25-8-25-8-25-8-25-7-25-7-25-7-25-7-25-7-18-7-16-6-16-6-16-6-3-5-3-4-3-3-3-2-2-1 context. [2023-12-24 17:14:21,216 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown